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Home >> Ford >> 2021 >> Mustang Mach 1, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrumentation, Message Center And Warning Chimes (1 Of 2) >> Description And Operation >> Instrument Panel Cluster (IPC) - System Operation and Component Description >> System Operation >> Indicators

System Operation: Indicators

ABS Warning 

The IPC receives the ABS warning indicator request message from the GWM over the HS-CAN3. The GWM receives the ABS warning indicator request message from the ABS module over the HS-CAN2. If a fault condition exists in the ABS, the ABS module sends the ABS warning indicator request message to either flash or illuminate the ABS warning indicator.

Refer to ABS/Brake/Stability-Traction Control System Indication description for information on the conditions when the ABS warning indicator is turned on

ABS/Brake/Stability-Traction Control System 

The brake/stability-traction control system indication is controlled almost entirely by the ABS module. The ABS module can illuminate multiple indicators for various fault conditions. The following table provides a summary of the basic fault conditions and the indicators that are illuminated for each condition.

NOTE: Refer to the Normal Operation and Fault Condition description before each brake/stability-traction control system indicator Pinpoint Test (PPT) for the IPC default action for network/missing message conditions.
Event/Fault Condition ABS Warning Indicator Status Brake Warning Indicator Status Stability-Traction Control Indicator Status Stability-Traction Control Disabled Indicator Status
Stable driving (no control events) Off Off Off On or off based on driver request
Parking brake applied Off On Off Off
Low brake fluid level or brake fluid level input concern Off On Off Off
Stability-traction control event Off Off Flashing On or off based on driver request
Stability-traction control disabled by driver Off Off Off On
Single wheel speed sensor faults On Off On Off
2 or 3 wheel speed sensor faults On On On Off
HCU valve fault On On On Off
ABS module fault On On On Off
ABS battery voltage faults On On or off On On
ABS pump motor fault On On On Off
HCU pressure sensor fault (master cylinder pressure input) Off Off On Off
Steering wheel angle sensor center not found fault Off Off On Off
Total CAN failure On Off On On
Configuration mismatch or not complete Flashing Off Off Off
Calibration of internal sensors not complete Off Off Flashing Off
Vehicle Identification Number (VIN) mismatch On On On Off
ACC and ABS both active Off Off Flashing Off
Sport/track mode Off Off Off On
Full system off (ABS on) Off Off Off On

Airbag Warning 

The IPC receives the airbag warning indicator request from the GWM over the HS-CAN3. The GWM receives the airbag warning indicator request from the RCM over the HS-CAN2. If a SRS concern is detected, the RCM sets a DTC and the IPC illuminates the airbag warning indicator.

Brake Warning 

The brake warning indicator informs the driver the brake fluid level is low, there is a failure in the base brake system or the parking brake is applied. The IPC uses 3 messaged inputs to control the brake warning indicator.

The IPC receives the brake (red) warning indicator request, the brake fluid level low message request and the parking brake status messages from the GWM over the HS-CAN3.

The GWM receives the brake (red) warning indicator request from the ABS module over the HS-CAN2.

The GWM receives the brake fluid level low message request and the parking brake status messages from the BCM over the HS-CAN1.

Refer to ABS/Brake/Stability-Traction Control System Indication description for information on the conditions when the brake warning indicator is turned on.

Front Fog Lamp 

The fog lamp indicator informs the driver that the fog lamps are turned on. The IPC receives the front fog lamp indicator request from the GWM over the HS-CAN3. The GWM receives the fog lamp indicator request from the BCM module over the HS-CAN1.

High Beam 

The high beam indicator informs the driver that the high beams are turned on. The IPC receives the headlamp high beam status message from the GWM over the HS-CAN3. The GWM receives the headlamp high beam status message from the SCCM module over the HS-CAN2.

LED Low Beam Malfunction 

The LED low beam indicator informs the driver an LED low beam is not functioning correctly. The IPC receives the headlamp low beam out message from the GWM over the HS-CAN3. The GWM receives the headlamp low beam out message from the BCM over the HS-CAN1.

Lights On 

When the parking lamps are turned on, the BCM sends the parklamp status message to the GWM over the HS-CAN1. The IPC receives the parklamp status message from the GWM over the HS-CAN3 to illuminate the lights on indicator.

MIL 

The IPC receives the MIL request from the GWM over the HS-CAN3. The GWM receives the MIL request from the PCM over the HS-CAN1.

PRNDL And SelectShift 

The SelectShift display indicates to the driver which gear is currently selected when the transmission is in the SelectShift or manual mode. When the transmission is in SelectShift mode, the gear number is displayed in the SelectShift display area.

For additional information related to the SelectShift features, refer to the Owner's Literature.

The IPC uses the following messages to control the PRNDL and SelectShift indication.

The IPC receives all required messages from the GWM over the HS-CAN3.

The GWM receives the transmission gear display, transmission gear display mode and vehicle speed messages from the PCM over the HS-CAN1.

The GWM receives the ignition status, transport mode and power shed level request messages from the BCM over the HS-CAN1.

Rear Fog Lamp (If Equipped) 

The rear fog lamp indicator informs the driver that the rear fog lamps are turned on. The IPC receives the rear fog lamp indicator request from the GWM over the HS-CAN3. The GWM receives the rear fog lamp indicator request from the BCM module over the HS-CAN1.

Seatbelt Warning 

The RCM monitors the driver seatbelt position through the driver seatbelt buckle switch. The RCM provides the driver seatbelt buckle status message to the GWM over the HS-CAN2. The GWM provides the driver seatbelt buckle status message to the IPC over the HS-CAN3 to either turn on or turn off the seatbelt warning indicator.

Stability-Traction Control Indicator (Sliding Car Icon) 

The IPC receives the stability-traction control indicator request message from the GWM over the HS-CAN3. The GWM receives the stability-traction control indicator request message from the ABS over the HS-CAN2.

Refer to ABS/Brake/Stability-Traction Control System Indication description for information on the conditions when the stability-traction control indicator (sliding car icon) is turned on.

Stability-Traction Control Disabled Indicator (Sliding Car OFF Icon) 

The stability-traction control is configured on/off using the stability assist-traction control mode switch located in the center console. When the driver enables or disables the stability-traction control system, the ABS module sends the stability-traction control mode indicator message to the GWM over the HS-CAN2. The GWM sends the stability-traction control mode indicator message to the IPC over the HS-CAN3 to illuminate or turn off the stability-traction control disabled indicator (sliding car OFF icon) based upon the system state.

Refer to ABS/Brake/Stability-Traction Control System Indication description for information on the conditions when the stability-traction control disabled indicator (sliding car OFF icon) is turned on.

When a MyKey® administrator has set the AdvanceTrac® feature to always on and a MyKey® programmed key is in use, the stability-traction control system cannot be disabled. The menu selection in the message center used to disable the stability-traction control system does not display when a MyKey® is in use, but remains active for the MyKey® administrator to select the AdvanceTrac® always on feature off. The stability-traction control indicator still functions normally to indicate a stability-traction control system fault and a stability-traction control active event.

Refer to ABS/Brake/Stability-Traction Control System Indication description for information on the conditions when the stability-traction control indicator (sliding car icon) is turned on.

TPMS 

The IPC receives the tire pressure warning indicator request from the GWM over the HS-CAN3. The GWM receives the tire pressure warning indicator request from the BCM over the HS-CAN1.

If the BCM determines the tire pressure has exceeded the low tire pressure limits, the tire pressure warning indicator request message is sent to the IPC to illuminate the TPMS warning indicator.

If a TPMS monitor or sensor fault condition exists, the BCM sends the tire pressure warning indicator request message to the IPC to flash the TPMS warning indicator. The IPC flashes the TPMS warning indicator for 75 seconds then turns the indicator on solid.

Turn Signal/Hazard 

When the multifunction switch is in the LH or RH turn position or if the hazard switch is on, the BCM sends the left turn lamp on request or right turn lamp on request message to the GWM over the HS-CAN1. The GWM sends the left turn lamp on request or right turn lamp on request message to the IPC over the HS-CAN3. Upon receipt of the applicable turn signal on/off message, the IPC flashes the turn signal indicator on and off.

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