Ford Fiesta: Cruise Control / Cruise Control. Diagnosis and Testing

DTC Chart(s):

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).

  IPC DTC Chart

  PCM DTC Chart

Symptom Chart(s)

Symptom Chart:

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).

Pinpoint Tests

P0704:01 The Cruise Control Is Inoperative

Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

The cruise control functionality is controlled through the brake pedal switch that is hard-wired to the PCM through a signal and return circuit, and a cruise control deactivator switch that is hard-wired to the IPC . There are 5 cruise control switches with each switch operating a specific function that uses different resistance values. The IPC sends out a reference voltage to the cruise control switches and monitors the voltage drop when a cruise control switch is pressed. The voltage drop varies depending upon the resistance of each switch, providing a specific indication to the IPC which switch is pressed.

The stoplamp switch is an input to the PCM for the cruise control operation. When the brake pedal is applied, the normally open stoplamp switch closes and applies a voltage signal to the PCM deactivating the cruise control, if engaged. The cruise control deactivator switch is a normally closed switch that provides a ground signal to the IPC . When the brake pedal is applied, the switch opens and removes the ground signal to the IPC .

The IPC sends a network message over the HS-CAN to the PCM . This is a redundant signal to the PCM . The PCM receives both signals and compares the inputs to confirm the correct brake input sequence is received.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Clockspring
• TR sensor
• Cruise control switch
• Cruise control deactivator switch
• Clutch pedal cruise control deactivator switch (manual transmission)
• IPC
• PCM
• ABS module

A1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Review the recorded DTCs from the IPC and the PCM self-tests. Are any DTCs recorded? Yes For DTC P0704:01, GO to A5 For all other DTCs, REFER to the DTC Charts in this section. No GO to A2

A2 CHECK FOR ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DTCS

Review the recorded DTCs from the ABS module self-test. Are any ABS DTCs recorded? Yes REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing). No GO to A3

A3 MONITOR THE BRAKE PEDAL PARAMETER IDENTIFICATIONS (PIDS)

Using a diagnostic scan tool, view PCM PIDs. Using the table monitor the BOO1 and BOO2 while applying and releasing the brake pedal. Brake Pedal Position BOO1 PID BOO2 PID Released Off Off Applied On On Do the PID values agree with the brake pedal position? Yes For automatic transmission, GO to A4 For manual transmission, GO to A5 No GO to Pinpoint Test B

A4 MONITOR THE PCM (POWERTRAIN CONTROL MODULE) TRANSGEAR PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID (TRANSGEAR). Select DRIVE. Does the PID value agree with the TRANSGEAR selector lever position? Yes GO to A6 No REFER to: External Controls (307-05 Automatic Transmission External Controls - 6-Speed PowerShift Transmission – DPS6/6DCT250, Diagnosis and Testing).

A5 CHECK THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID CPP_TOP while applying and releasing the clutch pedal. Does the PID value read "YES" with the clutch pedal applied and "NO" with the clutch pedal released? Yes GO to A6 No If the CPP_TOP value always reads YES (pressed), GO to A7 If the CPP_TOP value always reads NO (released), GO to Pinpoint Test D

A6 CHECK THE CRUISE CONTROL SWITCH PIDS

Using a diagnostic scan tool, view IPC PIDs. Press each cruise control switch while monitoring the cruise control switch PIDS as indicated in the table below. Cruise Control Switch CRUISE_SW PID Values — NONE Pressed CAN/RES CANCEL/RESUME ON ON OFF OFF SET + SET+ SET - SET- Does the PID value agree with the switch position? Yes GO to A8 No If only one switch does not display the correct PID value, INSTALL a new cruise control switch. REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). Otherwise, GO to Pinpoint Test C

A7 CHECK THE CLUTCH PEDAL SWITCH PID (PARAMETER IDENTIFICATION) WITH THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH DISCONNECTED

Disconnect Clutch Pedal Cruise Control Deactivator Switch C2354 . Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID CPP_TOP. Does the PID value read NO? Yes INSTALL a new clutch pedal cruise control deactivator switch. No REPAIR the circuit for a short to ground.

A8 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF. Disconnect all the PCM connectors. Repair: corrosion (install new connector or terminals – clean module pins) damaged or bent pins – install new terminals/pins pushed-out pins – install new pins as necessary Reconnect the PCM connectors. Make sure they seat and latch correctly. Connect all previously disconnected connectors. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

P0504:00 Or P1572:01

Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal operation and Fault Conditions

The stoplamp switch and cruise control deactivator switch signals are inputs to the PCM and the IPC respectively for the cruise control operation. When the brake pedal is applied, the normally open stoplamp switch closes and applies a voltage signal to the PCM deactivating the cruise control, if engaged. The cruise control deactivator switch is a normally closed switch that provides a ground signal to the IPC . When the brake pedal is applied, the switch opens and removes the ground signal to the IPC . The IPC sends a network message over the HS-CAN to the PCM . This is a redundant signal to the PCM . The PCM receives both signals and compares the inputs to confirm that the correct brake input sequence is received.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Stoplamp switch
• Cruise control deactivator switch
• PCM
• IPC
• RFA

B1 CHECK THE OPERATION OF THE STOPLAMPS

Ignition ON. Operate the stoplamps. Do the stoplamps operate correctly? Yes GO to B2 No REFER to: Stoplamps (417-01 Exterior Lighting, Diagnosis and Testing).

B2 MONITOR THE BRAKE PEDAL PARAMETER IDENTIFICATIONS (PIDS)

Using a diagnostic scan tool, view PCM PIDs. Using the table monitor the BOO1 and BOO 2 while applying and releasing the brake pedal. Brake Pedal Position BOO1 PID BOO2 PID Released Off Off Applied On On Do the PID values agree with the brake pedal position? Yes For DTC P0504:00, GO to B11 For DTC P1572:01, GO to B10 No For an incorrect BOO1 PID value, GO to B3 If the BOO2 PID value always reads OFF, GO to B4 If the BOO2 PID value always reads ON, GO to B7

B3 CHECK THE STOPLAMP SWITCH CIRCUIT

Ignition OFF. Disconnect PCM C1381B 1.0L GTDI. Disconnect PCM C175B 1.6L TiVCT. Disconnect PCM C1915B1.6L GTDI. Ignition ON. While applying and releasing the brake pedal, measure:   1.0L GTDI Positive Lead Measurement / Action Negative Lead   C1381B-66   Ground   1.6L TiVCT Positive Lead Measurement / Action Negative Lead   C175B-2   Ground   1.6L GTDI Positive Lead Measurement / Action Negative Lead   C1915B-66   Ground Is the voltage greater than 11 volts with the brake pedal applied and 0 volts with the brake pedal released? Yes GO to B11 No REPAIR the circuit.

B4 MONITOR THE CRUISE CONTROL DEACTIVATOR SWITCH PID

Ignition OFF. Disconnect Cruise Control Deactivator Switch C278 . Ignition ON. Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID (BOO2). Does the PID read ON? Yes INSTALL a new cruise control deactivator switch. REFER to: Cruise Control Deactivator Switch (419-03 Cruise Control, Removal and Installation). No If equipped with Keyless Entry With Push Button Start, GO to B5 Otherwise, GO to B6

B5 CHECK THE RFA (REMOTE FUNCTION ACTUATOR) MODULE FOR A SHORT TO GROUND

Ignition OFF. Disconnect RFA module C3503B . Ignition ON. Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID (BOO2). Does the BOO2 PID read ON? Yes INSTALL a new RFA module. REFER to: Remote Function Actuator (RFA) Module (419-10 Multifunction Electronic Modules, Removal and Installation). No GO to B6

B6 CHECK THE CRUISE CONTROL DEACTIVATOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF. Disconnect IPC C220A . Measure: Positive Lead Measurement / Action Negative Lead   C278-2   Ground Is the resistance greater than 10,000 ohms? Yes GO to B10 No REPAIR the circuit.

B7 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH FOR AN OPEN

Ignition OFF. Disconnect Cruise Control Deactivator Switch C278 . Ignition ON. Using a diagnostic scan tool, view PCM PIDs. Monitor the PCM PID (BOO2). Connect a fused jumper wire: Positive Lead Measurement / Action Negative Lead   C278-2   C278-1 Does the BOO2 PID read OFF? Yes REMOVE the fused jumper wire. INSTALL a new cruise control deactivator switch. REFER to: Cruise Control Deactivator Switch (419-03 Cruise Control, Removal and Installation). No REMOVE the fused jumper wire. GO to B8

B8 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH GROUND CIRCUIT FOR AN OPEN

Ignition OFF. Measure: Positive Lead Measurement / Action Negative Lead   C278-1   Ground Is the resistance less than 3 ohms? Yes GO to B9 No REPAIR the circuit.

B9 CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH INPUT TO THE IPC (INSTRUMENT PANEL CLUSTER) FOR AN OPEN

Disconnect IPC C220A . Measure: Positive Lead Measurement / Action Negative Lead   C278-2   C220A-29 Is the resistance less than 1 ohm? Yes GO to B10 No REPAIR the circuit.

B10 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF. Disconnect all the IPC connectors. Repair: corrosion (install new connector or terminals – clean module pins) damaged or bent pins – install new terminals/pins pushed-out pins – install new pins as necessary Reconnect the IPC connectors. Make sure they seat and latch correctly. Connect all previously disconnected connectors. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new IPC . REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, Removal and Installation). No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

B11 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF. Disconnect all the PCM connectors. Repair: corrosion (install new connector or terminals – clean module pins) damaged or bent pins – install new terminals/pins pushed-out pins – install new pins as necessary Reconnect the PCM connectors. Make sure they seat and latch correctly. Connect all previously disconnected connectors. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

The Cruise Control Switches Do Not Operate Correctly

Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

There are 5 cruise control switches with each switch operating a specific function that uses different resistance values. The IPC sends out a reference voltage to the cruise control switches and monitors the voltage drop when a cruise control switch is pressed. The voltage drop varies depending upon the resistance of each switch, providing the IPC with a specific indication of which switch is pressed. The IPC sends a network message over the HS-CAN to the PCM activating and controlling the cruise control system.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Clockspring
• Cruise control switch
• IPC
• PCM

The Cruise Control Does Not Disengage When The Clutch Pedal Is Applied

Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

Vehicles equipped with a manual transmission have an additional clutch pedal cruise control deactivator switch. The clutch pedal cruise control deactivator (top travel) switch is a normally open switch with the clutch pedal released. When the clutch pedal is applied, the clutch pedal cruise control deactivator switch moves to the closed position, which routes the ground signal to the IPC . The IPC sends a network message over the HS-CAN to the PCM , deactivating the cruise control system.

Possible Sources

• Wiring, terminals and connectors
• Clutch pedal cruise control deactivator switch
• IPC
• PCM

D1 CHECK THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH (CPP_TOP) PID (PARAMETER IDENTIFICATION)

Ignition ON. Using a scan tool, view PCM Parameter Identifications (PIDs). Monitor the PCM PID CPP_TOP while applying and releasing the clutch pedal. Does the PID value read "YES" with the clutch pedal applied and "NO" with the clutch pedal released? Yes GO to D6 No GO to D2

D2 CHECK THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH

Ignition OFF. Disconnect: Clutch Pedal Cruise Control Deactivator Switch C2354 Connect a fused jumper wire: Click to display connectors Positive Lead Measurement / Action Negative Lead   C2354-2   C2354-3 Ignition ON. Monitor the PCM PID CPP_TOP. Does the PID value read YES? Yes REMOVE the fused jumper wire. INSTALL a new clutch pedal cruise control deactivator switch. No REMOVE the fused jumper wire. GO to D3

D3 CHECK THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH GROUND CIRCUIT FOR AN OPEN

Ignition OFF. Connect a fused jumper wire: Click to display connectors Positive Lead Measurement / Action Negative Lead   C2354-3   Ground Ignition ON. Monitor the PCM PID CPP_TOP. Does the PID value read YES? Yes REMOVE the fused jumper wire. REPAIR the ground circuit. No REMOVE the fused jumper wire. GO to D4

D4 CHECK THE CLUTCH PEDAL CRUISE CONTROL DEACTIVATOR SWITCH SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF. Disconnect: IPC C220A. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C2354-2   C220A-10 Is the resistance less than 1 ohm? Yes GO to D5 No REPAIR the circuit.

D5 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF. Disconnect and inspect all IPC connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the IPC connectors. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new IPC . REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, 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.

D6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all PCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the PCM connectors. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). 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.

P0833:00

Normal Operation and Fault Conditions

Vehicles equipped with a manual transmission have an additional clutch pedal cruise control deactivator switch. The clutch pedal cruise control deactivator switch is a normally open switch with the clutch pedal released. When the clutch pedal is pressed, the clutch pedal cruise control deactivator switch moves to the closed position, which routes the ground signal to the IPC . The IPC sends a network message over the HS-CAN to the PCM , deactivating the cruise control system.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals and connectors
• PCM

E1 CHECK THE CLUTCH PEDAL PARAMETER IDENTIFICATIONS (PIDS)

Ignition ON. Using a scan tool, view PCM Parameter Identifications (PIDs). Monitor the PCM PIDs CPP_TOP and CPP_BOT while applying and releasing the clutch pedal. Does the PID CPP_TOP value read YES with the clutch pedal applied and NO with the clutch pedal released? Yes GO to E2 No If the CPP_TOP PID always reads YES (applied), DIAGNOSE the CPP switch. Refer to the appropriate section in Group 303 for the procedure. If the CPP_TOP PID always reads NO (released), GO to Pinpoint Test D.

E2 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all PCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the PCM connectors. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). 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.