Ford Fiesta Manuals

Ford Fiesta: Wipers and Washers / Wipers and Washers. Diagnosis and Testing

Ford Fiesta 2014 - 2019 Service Manual / Body and Paint / Wipers and Washers / Wipers and Washers. Diagnosis and Testing

DTC Chart: BCM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  BCM DTC Chart


  DTC Description Action
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation DIAGNOSE the symptom. REFER to the Symptom Chart: Wipers and Washers in this section.
B1051:92 Front Washer Switch: Performance or Incorrect Operation
  • If the windshield washer is always on, INSTALL a new wiper/washer switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
  • If the windshield washer is inoperative, GO to Pinpoint Test H
B1052:92 Rear Washer Switch: Performance or Incorrect Operation
  • If the rear washer is always on, INSTALL a new wiper/washer switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
  • If the rear washer is inoperative, CHECK the operation of the windshield washer.
    • If the windshield washer is inoperative, GO to Pinpoint Test H
    • If the windshield washer operates, INSTALL a new wiper/washer switch.
      REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
B10AD:96 Rain sensor: Component Internal Failure INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers) .
B11DC:92 Rear Wiper Mode Switch: Performance or Incorrect Operation   GO to Pinpoint Test J
B1C45:24 Front Wiper Park Position Switch: Signal Stuck High DIAGNOSE all other BCM Diagnostic Trouble Codes (DTCs) first. If no other DTC is present, GO to Pinpoint Test G
B1C53:13 Front Wiper Intermittent Data: Circuit Open
  • If the vehicle is not equipped with rain sensitive wipers, GO to Pinpoint Test B
  • If the vehicle is equipped with rain sensitive wipers, GO to Pinpoint Test C
U0231:87 Lost Communication With Rain Sensing Module: Missing Message   GO to Pinpoint Test C
All other Diagnostic Trouble Codes (DTCs) -  
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

Symptom Chart: Wipers and Washers

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Possible Causes Actions
All windshield wiper modes are inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
The mist wipe setting is inoperative
  • Wiper/washer switch
  • CHECK the operation of the low speed windshield wiper setting.
    • If the low speed setting operates correctly, INSTALL a new wiper/washer switch.
      REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
    • If the low speed windshield wiper setting is inoperative, GO to Pinpoint Test D
The intermittent windshield wiper setting is inoperative or does not operate correctly
  • Refer to the Pinpoint Test
  • If the vehicle is not equipped with rain sensitive wipers, GO to Pinpoint Test B
  • If the vehicle is equipped with rain sensitive wipers, GO to Pinpoint Test C
The rain sensitive wiper feature is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
The rain sensitive wipers have erratic/inconsistent operation
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
The rain sensitive wipers are too sensitive/not sensitive enough to moisture
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
The low speed windshield wiper setting is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test D
The high speed windshield wiper setting is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test E
The windshield wipers stay on continuously
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test F
The windshield wipers do not park at the correct position
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G
The windshield washer is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test H
The windshield washer is always on
  • Wiper/washer switch
  • INSTALL a new wiper/washer switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
The rear window wiper is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test I
The rear window wiper does not complete a continuous full wipe of the rear window during operation
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K
The rear window wiper stays on continuously
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test J
The rear window washer is inoperative
  • Windshield washer concern
  • Wiper/washer switch
  • CHECK the operation of the windshield washer.
    • If the windshield washer is inoperative, GO to Pinpoint Test H
    • If the windshield washer operates, INSTALL a new wiper/washer switch.
      REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
The rear window washer is always on
  • Wiper/washer switch
  • INSTALL a new wiper/washer switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
The rear window wiper does not park at the correct position
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K

Pinpoint Tests

All Windshield Wiper Modes Are Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Windshield wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the CJB fuse 11 (20A) and make sure it is OK.

PINPOINT TEST A: ALL WINDSHIELD WIPER MODES ARE INOPERATIVE
A1 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
No GO to A2

A2 CHECK THE WIPER/WASHER SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the following BCM Parameter Identifications (PIDs):
    • Front wiper interval / Auto wiper switch (FRNWIPER_Int)
    • Front Wiper Command Low Speed (FRNWIPER_Lo)
    • Front Wiper Command High Speed (FRNWIPER_Hi)
  • Place the wiper/washer switch through all settings, one at a time, ending with the wiper/washer switch in the off setting.

Do the Parameter Identifications (PIDs) correspond correctly with the wiper/washer switch settings?
Yes VERIFY the CJB fuse 11 (20A) is OK. If OK, GO to A5
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
No GO to A3

A3 BYPASS THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C2081-3   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to A4

A4 CHECK THE WIPER/WASHER SWITCH RETURN CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2081-5   C2280E-8

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit.

A5 CHECK THE FRONT WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN TO THE BCM (BODY CONTROL MODULE)
  • Ignition OFF.
  • Disconnect BCM C2280B .
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2280B-10   Ground

Is the voltage greater than 11 volts?
Yes GO to A6
No REPAIR the circuit.

A6 CHECK THE WINDSHIELD WIPER MOTOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C125 .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C125-4   Ground

Is the resistance less than 3 ohms?
Yes GO to A7
No REPAIR the circuit.

A7 CHECK THE BCM (BODY CONTROL MODULE) OUTPUT

NOTICE: This test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C125-2   C125-4
  • Connect BCM C2280B .
  • Ignition ON.
  • Place the wiper/washer switch to the low speed and then off setting.

Does the test lamp illuminate when the wiper/washer switch is in the low speed setting?
Yes GO to A9
No GO to A8

A8 CHECK THE BCM (BODY CONTROL MODULE) FRONT WIPER RETURN CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280A .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2280A-12   Ground

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit.

A9 CHECK FOR WINDSHIELD WIPER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

A10 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Intermittent Windshield Wiper Setting Is Inoperative Or Does Not Operate Correctly


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and low speed wiper request input circuits (circuits shorted together) or a short to ground from the intermittent and high speed wiper request input circuits (circuits shorted together).
B1C53:13 Front Wiper Intermittent Data: Circuit Open Sets when the BCM detects an open from the interval setting input circuit.

Possible Causes

  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST B: THE INTERMITTENT WINDSHIELD WIPER SETTING IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY
B1 CHECK THE OPERATION OF THE LOW AND HIGH SPEED WIPER SETTINGS
  • Ignition ON.
  • Place the wiper/washer switch to the low speed, high speed and then off setting.

Do the windshield wipers operate in any setting?
Yes GO to B2
No GO to Pinpoint Test A

B2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92 OR B1C53:13
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92 or B1C53:13 present?
Yes For DTC B1008:92, GO to B5
For DTC B1C53:13, GO to B3
No GO to B7

B3 CHECK THE WIPER/WASHER SWITCH INTERVAL SETTING FOR AN OPEN
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Perform the wiper/washer switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the wiper/washer switch pass the component test?
Yes GO to B4
No INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .

B4 CHECK THE INTERVAL SETTING INPUT CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280E .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-10   C2280E-9

Is the resistance less than 3 ohms?
Yes GO to B11
No REPAIR the circuit.

B5 ISOLATE THE WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to B6

B6 CHECK THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT FOR A SHORT TO THE LOW SPEED AND THE HIGH SPEED REQUEST INPUT CIRCUITS
  • Disconnect BCM C2280E .
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-3
      C2081-9   C2081-8

Are the resistances greater than 10,000 ohms?
Yes GO to B11
No REPAIR the circuits in question.

B7 CHECK THE FRONT WIPER INTERVAL / AUTO WIPER SWITCH (FRNWIPER_INT) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM PID FRNWIPER_Int.
  • Place the wiper/washer switch to the intermittent speed and then off setting.

Does the PID indicate Active when the wiper/washer switch is in the intermittent setting?
Yes GO to B10
No GO to B8

B8 ISOLATE THE WIPER/WASHER SWITCH (INTERMITTENT INPUT CIRCUIT)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to B9

B9 CHECK THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2280F-1

Is the resistance less than 3 ohms?
Yes GO to B11
No REPAIR the circuit.

B10 CHECK THE INTERVAL SETTING INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Disconnect Wiper/Washer Switch C2081 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-10   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) . TEST the system for normal operation. If the concern is still present, GO to B11
No REPAIR the circuit.

B11 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Rain Sensitive Wiper Feature Is Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and low speed wiper request input circuits (circuits shorted together) or a short to ground from the intermittent and high speed wiper request input circuits (circuits shorted together).
B1C53:13 Front Wiper Intermittent Data: Circuit Open Sets when the BCM detects an open from the interval setting input circuit.
U0231:87 Lost Communication With Rain Sensing Module: Missing Message Sets when the BCM determines a communication error has occurred on the LIN . This may be caused by an open in the rain sensor power or ground circuit or an open in the LIN circuit between the rain sensor and the BCM .

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Foreign material on windshield, such as dirt, dust or bugs
  • Wiper blades
  • Windshield glass
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Rain sensor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the CJB fuse 2 (7.5A) and make sure it is OK.
  • Inspect the wiper/washer switch for damage.
  • Inspect the windshield for damage.
  • Inspect the rain sensor mounting for damage.

PINPOINT TEST C: THE RAIN SENSITIVE WIPER FEATURE IS INOPERATIVE
C1 CHECK THE OPERATION OF THE LOW AND HIGH SPEED WIPER SETTINGS
  • Ignition ON.
  • Place the wiper/washer switch to the low speed, high speed and then off setting.

Do the windshield wipers operate in any setting?
Yes GO to C2
No GO to Pinpoint Test A

C2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92, B1C53:13 OR U0231:87
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92, B1C53:13 or U0231:87present?
Yes For DTC B1008:92, GO to C5
For DTC B1C53:13, GO to C3
For DTC U0231:87, GO to C18
No GO to C7

C3 CHECK THE WIPER/WASHER SWITCH INTERVAL SETTING FOR AN OPEN
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Perform the wiper/washer switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the wiper/washer switch pass the component test?
Yes GO to C4
No INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .

C4 CHECK THE INTERVAL SETTING INPUT CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280E .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-10   C2280E-9

Is the resistance less than 3 ohms?
Yes GO to C23
No REPAIR the circuit.

C5 ISOLATE THE WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to C6

C6 CHECK THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT FOR A SHORT TO THE LOW SPEED AND THE HIGH SPEED REQUEST INPUT CIRCUITS
  • Disconnect BCM C2280E .
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-3
      C2081-9   C2081-8

Are the resistances greater than 10,000 ohms?
Yes GO to C23
No REPAIR the circuits in question.

C7 CHECK THE FRONT WIPER INTERVAL / AUTO WIPER SWITCH (FRNWIPER_INT) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM PID FRNWIPER_Int.
  • Place the wiper/washer switch to the intermittent speed and then off setting.

Does the PID indicate Active when the wiper/washer switch is in the intermittent setting?
Yes GO to C10
No GO to C8

C8 ISOLATE THE WIPER/WASHER SWITCH (INTERMITTENT INPUT CIRCUIT)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to C9

C9 CHECK THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   C2280F-1

Is the resistance less than 3 ohms?
Yes GO to C23
No REPAIR the circuit.

C10 CHECK THE WIPER/WASHER SWITCH INTERVAL SETTING PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the following BCM Parameter Identifications (PIDs):
    • Front Wiper Select Switch A (FRNWIPER_A)
    • Front Wiper Select Switch B (FRNWIPER_B)
    • Front Wiper Select Switch C (FRNWIPER_C)
  • Place the wiper/washer switch to each intermittent speed and then off setting. Refer to the following table.
    Intermittent Setting FRNWIPER_A FRNWIPER_B FRNWIPER_C
    AUTO 1/INT 1 Active Inactive Inactive
    AUTO 2/INT 2 Inactive Active Inactive
    AUTO 3/INT 3 Active Active Inactive
    AUTO 4/INT 4 Inactive Inactive Active
    AUTO 5/INT 5 Active Inactive Active
    AUTO 6/INT 6 Inactive Active Active

Do the PID values agree with the wiper/washer switch positions?
Yes GO to C12
No GO to C11

C11 CHECK THE INTERVAL SETTING INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Disconnect Wiper/Washer Switch C2081 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-10   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) . TEST the system for normal operation. If the concern is still present, GO to C23
No REPAIR the circuit.

C12 CHECK THE WINDSHIELD FOR DAMAGE
  • Ignition OFF.
  • Inspect the windshield glass for any cracks, pits or other visible damage around the area of the rain sensor.

Is any windshield damage present near the area of the rain sensor?
Yes INSTALL a new windshield glass.
REFER to: Windshield Glass (501-11 Glass, Frames and Mechanisms, Removal and Installation).
No GO to C13

C13 CHECK THE WINDSHIELD GLASS FOR STREAKING
  • Ignition ON.
  • Turn the wiper/washer switch to the low speed wiper setting while applying water to the windshield surface. Observe the wipe quality, especially around the area of the rain sensor.

Is any streaking present on the windshield around the area of the rain sensor?
Yes GO to C14
No GO to C16

C14 CHECK THE WINDSHIELD WIPER BLADES FOR STREAKING
  • Ignition OFF.
  • Clean the windshield glass with glass cleaner.
  • Clean the wiper blades with isopropyl alcohol swabs. Wipe the entire length of the wiper blades.
  • Ignition ON.
  • Place the wiper/washer switch to the low speed wiper setting while applying water to the windshield surface. Observe the wipe quality, especially around the area of the rain sensor.

Was there noticeable improvement in the wipe quality after cleaning the glass and the wiper blades?
Yes GO to C15
No INSTALL new wiper blades. GO to C15

C15 RECHECK THE RAIN SENSITIVE WIPERS OPERATION
  • Place the wiper/washer switch to the AUTO 6/INT 6 setting (most sensitive to moisture) while applying water to the windshield above the rain sensor.

Do the wipers operate when water is applied to the windshield surface?
Yes The system is operating correctly at this time. The concern may have been caused by poor wipe quality on the windshield around the rain sensor.
No GO to C16

C16 CHECK FOR THE PRESENCE OF THE GEL-TYPE LENS
  • Ignition OFF.
  • Lightly press the rain sensor against the windshield and release the rain sensor clips.

Does the rain sensor remain adhered to the windshield?
Yes ATTACH the retaining clips. GO to C17
No The sensor gel-type lens is missing or damaged. INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers) .

C17 INSPECT THE RAIN SENSOR MOUNTING AREA

NOTE: The rain sensor gel-type lens can be damaged or contaminated during rain sensor removal or incorrect installation.

  • From the outside of the vehicle, inspect the area of the windshield glass where the rain sensor is mounted. The rain sensor contact area should appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor.

Does the rain sensor contact area appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor?
Yes GO to C18
No INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers) . TEST the system for normal operation. If the concern is still present, GO to C23

C18 CHECK THE RAIN SENSOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Rain Sensor C914 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-1   Ground

Is the voltage greater than 11 volts?
Yes GO to C19
No VERIFY the CJB fuse 2 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to diagnose the possible causes of the circuit short.

C19 CHECK THE RAIN SENSOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-3   Ground

Is the resistance less than 3 ohms?
Yes GO to C20
No REPAIR the circuit.

C20 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect BCM C2280G .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to C21

C21 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to C22
No REPAIR the circuit.

C22 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-2   C2280G-11

Is the resistance less than 3 ohms?
Yes INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers) . TEST the system for normal operation. If the concern is still present, GO to C23
No REPAIR the circuit.

C23 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Low Speed Windshield Wiper Setting Is Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and low speed wiper request input circuits (circuits shorted together).

Possible Causes

  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Windshield wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST D: THE LOW SPEED WINDSHIELD WIPER SETTING IS INOPERATIVE
D1 CHECK THE OPERATION OF THE HIGH SPEED WIPER SETTING
  • Ignition ON.
  • Place the wiper/washer switch to the high speed and then off setting.

Do the windshield wipers operate with the wiper/washer switch in the high speed setting?
Yes GO to D2
No GO to Pinpoint Test A

D2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to D3
No GO to D5

D3 ISOLATE THE WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-3   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to D4

D4 CHECK THE LOW SPEED REQUEST INPUT CIRCUIT FOR A SHORT TO THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-3   C2081-9

Is the resistance greater than 10,000 ohms?
Yes GO to D11
No REPAIR the circuits.

D5 CHECK THE FRONT WIPER COMMAND LOW SPEED (FRNWIPER_LO) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM PID FRNWIPER_Lo.
  • Place the wiper/washer switch to the low speed and then off setting.

Does the PID indicate Active when the wiper/washer switch is in the low speed setting?
Yes GO to D8
No GO to D6

D6 ISOLATE THE WIPER/WASHER SWITCH (NO DTC (DIAGNOSTIC TROUBLE CODE) )
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-3   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to D7

D7 CHECK THE LOW SPEED WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-3   C2280E-2

Is the resistance less than 3 ohms?
Yes GO to D11
No REPAIR the circuit.

D8 CHECK FOR VOLTAGE TO THE WINDSHIELD WIPER MOTOR

NOTICE: This test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C125 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C125-2   C125-4
  • Ignition ON.
  • Place the wiper/washer switch to the low speed setting.

Does the test lamp illuminate?
Yes GO to D10
No GO to D9

D9 CHECK THE BCM (BODY CONTROL MODULE) LOW SPEED WIPER VOLTAGE OUTPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280A .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C125-2   C2280A-9

Is the resistance less than 3 ohms?
Yes GO to D11
No REPAIR the circuit.

D10 CHECK FOR WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

D11 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The High Speed Windshield Wiper Setting Is Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and high speed wiper request input circuits (circuits shorted together).

Possible Causes

  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Windshield wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST E: THE HIGH SPEED WINDSHIELD WIPER SETTING IS INOPERATIVE
E1 CHECK THE OPERATION OF THE LOW SPEED WIPER SETTING
  • Ignition ON.
  • Place the wiper/washer switch to the low speed and then off setting.

Do the windshield wipers operate in the low speed setting?
Yes GO to E2
No GO to Pinpoint Test A

E2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to E3
No GO to E5

E3 ISOLATE THE WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-8   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to E4

E4 CHECK THE HIGH SPEED REQUEST INPUT CIRCUIT FOR A SHORT TO THE INTERMITTENT WIPER REQUEST INPUT CIRCUIT
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-8   C2081-9

Is the resistance greater than 10,000 ohms?
Yes GO to E11
No REPAIR the circuits.

E5 CHECK THE FRONT WIPER COMMAND HIGH SPEED (FRNWIPER_HI) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM PID FRNWIPER_Hi.
  • Place the wiper/washer switch to the high speed and then off setting.

Does the PID indicate Active when the wiper/washer switch is in the high speed setting?
Yes GO to E8
No GO to E6

E6 ISOLATE THE WIPER/WASHER SWITCH (NO DTC (DIAGNOSTIC TROUBLE CODE) )
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-8   C2081-5
  • Ignition ON.

Do the windshield wipers operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to E7

E7 CHECK THE HIGH SPEED WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-8   C2280F-10

Is the resistance less than 3 ohms?
Yes GO to E11
No REPAIR the circuit.

E8 CHECK THE BCM (BODY CONTROL MODULE) FOR VOLTAGE TO THE WINDSHIELD WIPER MOTOR

NOTICE: This test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C125 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C125-1   C125-4
  • Ignition ON.
  • Place the wiper/washer switch to the high speed setting.

Does the test lamp illuminate?
Yes GO to E10
No GO to E9

E9 CHECK THE BCM (BODY CONTROL MODULE) LOW SPEED WIPER VOLTAGE OUTPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280A .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C125-1   C2280A-10

Is the resistance less than 3 ohms?
Yes GO to E11
No REPAIR the circuit.

E10 CHECK FOR WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

E11 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Windshield Wipers Stay On Continuously


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from one of the windshield wiper request input circuits.

Possible Causes

  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST F: THE WINDSHIELD WIPERS STAY ON CONTINUOUSLY
F1 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • Ignition ON.
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to F2
No GO to F4

F2 CHECK THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Ignition ON.
  • Using a scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92 still present?
Yes GO to F3
No INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .

F3 CHECK THE INTERMITTENT, LOW AND HIGH SPEED REQUEST INPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-9   Ground
      C2081-3   Ground
      C2081-8   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F5
No REPAIR the circuit in question.

F4 CHECK THE BCM (BODY CONTROL MODULE) WINDSHIELD WIPER OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect BCM C2280A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280A-9   Ground
      C2280A-10   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to F5

F5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Windshield Wipers Do Not Park At The Correct Position


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1C45:24 Front Wiper Park Position Switch: Signal Stuck High Sets when the BCM detects the windshield wiper park detect input circuit indicates the wipers are parked for longer than 1.5 seconds after the windshield wiper motor has been activated or when the windshield wiper park detect input circuit indicates the wipers are not parked 12 seconds after the wipers are switched off. An open or short to ground from the windshield wiper park detect input circuit can cause this.

Possible Causes

  • Wiring, terminals or connectors
  • Wiper pivot arm
  • Windshield wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper pivot arm for damage.
  • Inspect the windshield wiper motor for damage.

PINPOINT TEST G: THE WINDSHIELD WIPERS DO NOT PARK AT THE CORRECT POSITION
G1 CHECK THE WIPER PIVOT ARM FOR DAMAGE
  • Ignition OFF.
  • Inspect the wiper pivot arm for damage.

Is the wiper pivot arm OK?
Yes GO to G2
No INSTALL a new wiper pivot arm.
REFER to: Windshield Wiper Pivot Arm (501-16 Wipers and Washers, Removal and Installation).

G2 CHECK THE BCM (BODY CONTROL MODULE) WINDSHIELD WIPER PARK INPUT CIRCUIT FOR A SHORT TO GROUND
  • Disconnect BCM C2280D .
  • Disconnect Windshield Wiper Motor C125 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C125-3   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to G3
No REPAIR the circuit.

G3 CHECK THE BCM (BODY CONTROL MODULE) WINDSHIELD WIPER PARK INPUT CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C125-3   C2280D-8

Is the resistance less than 3 ohms?
Yes GO to G4
No REPAIR the circuit.

G4 CHECK FOR WINDSHIELD WIPER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to G5
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

G5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Windshield Washer Is Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B1051:92 Front Washer Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the windshield washer request input circuit or a short to ground from the windshield washer output circuit.
B1051:92 Rear Washer Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the rear window washer request input circuit or a short to ground from the rear window washer output circuit.

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Washer pump
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • BCM

Possible Causes

  • Inspect the CJB fuse 15 (15A) and make sure it is OK.
  • Inspect the wiper/washer switch for damage.

PINPOINT TEST H: THE WINDSHIELD WASHER IS INOPERATIVE
NOTE: If sub-zero temperature conditions are present, the washer solvent may have frozen within the washer hose and nozzles. Allow the vehicle to warm up and retest the system. If the system operates, inform the customer of the correct type of washer solvent to use for the temperature conditions present.
H1 CHECK THE INTEGRITY OF THE WASHER PUMP CIRCUITRY

NOTICE: The test step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Washer Pump C137 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C137-1   C137-2
  • Ignition ON.
  • Activate the windshield washer function using the wiper/washer switch.

Does the test lamp illuminate when the washer is activated?
Yes INSTALL a new washer pump.
REFER to: Windshield Washer Pump (501-16 Wipers and Washers, Removal and Installation).
No VERIFY the CJB fuse 15 (15A) is OK. If OK, GO to H6
If not OK, GO to H2

H2 CHECK THE WASHER PUMP CIRCUITRY FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280A .
  • Install a new CJB fuse 15 (15A).
  • Ignition ON.

Is the CJB fuse 15 (15A) OK?
Yes REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short between the washer pump and the BCM .
No GO to H3

H3 CHECK THE BCM (BODY CONTROL MODULE) FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280B .
  • Install a new CJB fuse 15 (15A).
  • Ignition ON.

Is the CJB fuse 15 (15A) OK?
Yes GO to H11
No GO to H4

H4 CHECK THE CJB (CENTRAL JUNCTION BOX) WIPER/WASHER SWITCH VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Install a new CJB fuse 15 (15A).
  • Ignition ON.

Is the CJB fuse 15 (15A) OK?
Yes GO to H5
No REPAIR the circuit.

H5 CHECK THE WASHER REQUEST INPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2081-2   Ground
      C2081-7   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REPAIR the circuit in question.

H6 CHECK THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Perform the wiper/washer switch component test.

Is the wiper/washer switch OK?
Yes GO to H7
No INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .

H7 CHECK THE WIPER/WASHER SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2081-1   Ground

Is the voltage greater than 11 volts?
Yes GO to H8
No REPAIR the circuit.

H8 CHECK THE WIPER/WASHER SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2081-6   Ground

Is the resistance less than 3 ohms?
Yes GO to H9
No REPAIR the circuit.

H9 CHECK THE WASHER REQUEST INPUT CIRCUITS FOR AN OPEN
  • Disconnect BCM C2280B .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2081-2   C2280B-13
      C2081-7   C2280B-14

Are the resistances less than 3 ohms?
Yes GO to H10
No REPAIR the circuit in question.

H10 CHECK THE WASHER PUMP CIRCUITS FOR AN OPEN
  • Disconnect BCM C2280A .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C137-1   C2280A-13
      C137-2   C2280A-14

Are the resistances less than 3 ohms?
Yes GO to H11
No REPAIR the circuit in question.

H11 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Rear Window Wiper Is Inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Rear window wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the CJB fuse 13 (15A) and make sure it is OK.

PINPOINT TEST I: THE REAR WINDOW WIPER IS INOPERATIVE
I1 CHECK THE OPERATION OF THE LOW SPEED WIPER SETTING
  • Ignition ON.
  • Place the wiper/washer switch to the low speed and then off setting.

Do the windshield wipers operate in the low speed setting?
Yes GO to I2
No GO to Pinpoint Test A

I2 CHECK THE REAR WIPER INPUT SWITCH STATUS (R_WP-SW) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM PID R_WP-SW.
  • Place the wiper/washer switch to the rear window wiper on and then off setting.

Does the PID indicate Active when the wiper/washer switch is in the rear window wiper on setting?
Yes VERIFY the CJB fuse 13 (15A) is OK. If OK, GO to I5
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
No GO to I3

I3 ISOLATE THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-4   C2081-5
  • Ignition ON.

Does the rear window wiper operate?
Yes REMOVE the fused jumper wire. INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .
No REMOVE the fused jumper wire. GO to I4

I4 CHECK THE REAR WINDOW WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-4   C2280F-11

Is the resistance less than 3 ohms?
Yes GO to I9
No REPAIR the circuit.

I5 CHECK THE BCM (BODY CONTROL MODULE) FOR VOLTAGE TO THE REAR WINDOW WIPER MOTOR

NOTICE: This test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Rear Window Wiper Motor C4218 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C4218-1   C4218-3
  • Ignition ON.
  • Place the wiper/washer switch to the high speed and rear window wiper on settings and observe the test lamp.
  • Place the wiper/washer switch to the off setting.

Does the test lamp illuminate when the wiper/washer switch is in the rear window wiper on setting?
Yes INSTALL a new rear window wiper motor.
REFER to: Rear Window Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No GO to I6

I6 CHECK THE REAR WINDOW WIPER GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C4218-3   Ground

Is the resistance less than 3 ohms?
Yes GO to I7
No REPAIR the circuit.

I7 CHECK THE BCM (BODY CONTROL MODULE) REAR WINDOW WIPER VOLTAGE OUTPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280C .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C4218-1   C2280C-10

Is the resistance less than 3 ohms?
Yes GO to I8
No REPAIR the circuit.

I8 CHECK THE REAR WINDOW WIPER VOLTAGE SUPPLY CIRCUIT FOR AN OPEN TO THE BCM (BODY CONTROL MODULE)
  • Disconnect BCM C2280B .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2280B-15   Ground

Is the voltage greater than 11 volts?
Yes GO to I9
No REPAIR the circuit.

I9 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Rear Window Wiper Stays On Continuously


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).


  BCM DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
B11DC:92 Rear Wiper Mode Switch: Performance or Incorrect Operation Sets when the BCM detects a short to ground from the rear window wiper request input circuit.

Possible Causes

  • Wiring, terminals or connectors
  • Wiper/washer switch (also known as the steering column multifunction switch RH )
  • Rear window wiper motor
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST J: THE REAR WINDOW WIPER STAYS ON CONTINUOUSLY
J1 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B11DC:92
  • Ignition ON.
  • Using a scan tool, perform the BCM self-test.

Is DTC B11DC:92 present?
Yes GO to J2
No GO to J4

J2 CHECK THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect Wiper/Washer Switch C2081 .
  • Ignition ON.
  • Using a scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Using a scan tool, perform the BCM self-test.

Is DTC B11DC:92 still present?
Yes GO to J3
No INSTALL a new wiper/washer switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Column Switches) .

J3 CHECK THE REAR WINDOW WIPER REQUEST INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2081-4   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to J5
No REPAIR the circuit.

J4 CHECK THE BCM (BODY CONTROL MODULE) REAR WINDOW WIPER OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect BCM C2280C .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280C-10   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to J5

J5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Rear Window Wiper Does Not Park At The Correct Position


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • Rear window wiper motor
  • BCM

PINPOINT TEST K: THE REAR WINDOW WIPER DOES NOT PARK AT THE CORRECT POSITION
K1 CHECK THE REAR WINDOW WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

NOTICE: This test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or equivalent 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Rear Window Wiper Motor C4218 .
  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C4218-2   C4218-3
  • Ignition ON.
  • Place the wiper/washer switch to the rear window wiper on setting and observe the test lamp.
  • Place the wiper/washer switch to the off setting.

Does the test lamp illuminate when the wiper/washer switch is in the rear window wiper on setting?
Yes INSTALL a new rear window wiper motor.
REFER to: Rear Window Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No GO to K2

K2 CHECK THE REAR WINDOW WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280C .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C4218-2   C2280C-1

Is the resistance less than 3 ohms?
Yes GO to K3
No REPAIR the circuit.

K3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM . Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB . If a TSB exists for this concern, DISCONTINUE this test and follow the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


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