Ford Fiesta: Instrumentation, Message Center and Warning Chimes / Warning Chimes - System Operation and Component Description. Description and Operation

System Operation

System Diagram

Network Message Chart

Warning Chime Characteristics

Each warning chime has unique characteristics that help identify and differentiate one warning chime from another. The warning chimes use volume, chime frequency, length of time the chime sounds and the number of chime tones to identify which chime is sounding. The IPC prioritizes the chimes according to a preset hierarchy programmed into the IPC software. Generally, when more than one chime request is received by the IPC , the most important chime sounds. If a lower priority chime is currently sounding, the higher priority request takes over and replaces the lower priority chime. The chime characteristics are defined by the different chime types:

• Repetitive
• Single tone
• Tick-tock

Belt-Minder® Feature

The Belt-Minder® is configurable.
Refer to: Seatbelt Minder Deactivating/Activating (413-01 Instrumentation, Message Center and Warning Chimes, General Procedures).

The Belt-Minder® feature is a supplemental warning that augments the current safety belt warning function. This feature continually reminds the driver or front seat passenger that their safety belt is unbuckled by intermittently sounding a chime and illuminating the safety belt warning indicator in the IPC once the vehicle speed has exceeded 5 km/h (3 mph).

There are 2 Belt-Minder® strategies used and implemented by the IPC as commanded by the RCM . The 2 strategies are designed to provide an increased intensity level of the chime. Belt-Minder® A provides 6 one-second sequences of 0.5-second on/0.5-second off for the first minute of the Belt-Minder® warning. Belt-Minder® B provides 6 one-second sequences of 0.2-second on/0.2-second off then 0.3-second on/0.3-second off for the remainder of the Belt-Minder® warning.

When a programmed MyKey® is in use, the audio system is muted when the Belt-Minder® is active.

NOTE: Make sure the safety belt/Belt-Minder® chime operation is verified with the vehicle moving at least 5 km/h (3 mph).

The Belt-Minder® is deactivated under the following conditions:

• Ignition switched to OFF position
• Ignition switched to ACC position
• Five minutes have elapsed with the Belt-Minder® activated

Door Ajar Warning Chime

The door ajar warning chime warns that a door or the liftgate is not fully closed. The IPC receives the driver door, passenger door, driver rear door, passenger rear door ajar and liftgate ajar status from the BCM over the MS-CAN . When a door or liftgate becomes ajar while the ignition is in RUN, the IPC illuminates the door ajar warning indicator, the message center displays the appropriate door ajar warning message and the IPC sounds a repetitive chime until the door or liftgate is closed.

Headlamps On Chime

The headlamps on warning chime warns that the headlamps are on when the driver door is ajar and the key is removed from the ignition lock cylinder (without push button start) or when the ignition is OFF (with push button start). The IPC receives the headlamps on chime request from the BCM over the MS-CAN . The headlamps on warning chime sounds if the driver door is ajar, the headlamp switch is in the PARK or HEADLAMP position and the ignition is OFF. The headlamps on chime sounds a repetitive chime tone.

Parking Brake Warning Chime

The IPC uses parking brake status and vehicle speed data to control the parking brake warning chime. The IPC receives the vehicle speed data from the PCM over the HS-CAN . The parking brake position switch is hardwired to the IPC . When the ignition is ON, the parking brake is engaged, and the vehicle speed is greater than 10 km/h (6 mph), the IPC sounds the parking brake warning chime. The parking brake warning chime stops sounding and resets if the parking brake is released, the ignition is not ON, the vehicle speed is below 10 km/h (6 mph), or after 90 seconds from the time the chime is activated.

Safety Belt Warning Chime

The safety belt warning chime warns that the safety belt is not fastened. The safety belt warning chime sounds for approximately 6 seconds when the driver safety belt is not fastened and the ignition is transitioned from OFF or accessory to ON or START. The safety belt warning chime is turned off when the safety belt is fastened, when the ignition is transitioned from ON or START to OFF or accessory, or after approximately 6 seconds. The IPC receives the safety belt warning chime request from the RCM over the HS-CAN .

When a programmed MyKey® is in use, the audio system is muted when the Belt-Minder® is active.

Turn Signal-Hazard Chime Tone (Tick-Tock)

The IPC provides a repetitive 1-second on/off tick-tock chime tone along with visual RH or LH turn indicators to inform the driver the turn signal or hazard lamp function is on. The IPC receives the turn signal indication data from the BCM over the MS-CAN .