RTT Indicators: Overview
Indicators and RTT Indicators
ABS Warning
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 or RTT 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 Indication
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.
| Event/Fault Condition | ABS Indicator Status | Brake Warning Indicator Status | Electric Park Brake Indicator Status (Red) | Electric Park Brake Fault Indicator Status (Yellow) | Stability-Traction Control Indicator Status | Traction Control Disabled Indicator Status |
|---|---|---|---|---|---|---|
| Normal conditions | Off | Off | Off | Off | Off | Off |
| Parking brake applied | Off | Flashing while applying On when applied |
Off | Off | Off | Off |
| Low brake fluid level or brake fluid level input concern | Off | On | Off | Off | Off | Off |
| Stability-traction control event - trailer sway | Off | Off | Off | Off | Flashing | Off |
| Stability-traction control event - brake applied | Off | Off | Off | Off | Flashing | Off |
| Stability-traction control disabled by driver | Off | Off | Off | Off | Off | On |
| Single wheel speed sensor fault | On | Off | Off | Off | On | Off |
| 2 wheel speed sensor faults on the same axle or 3 wheel speed sensor faults | On | On | Off | On | On | Off |
| ABS module fault | On | On | Off | Off | On | Off |
| Park brake malfunction | On | On | Flashing | On | On | Off |
| ABS disabled | On | On | Off | Off | On | Off |
| All functions disabled | On | On | On | On | On | Off |
| Steering wheel angle sensor center not found | Off | Off | Off | Off | On | Off |
| ABS to CAN total failure | 4x2: Off 4x4: On |
Off | Off | Off | Off | Off |
| Electric park brake switch fault | Off | Off | Flashing | On | Off | Off |
| Configuration mismatch | Off | Off | Off | Off | Off | Off |
| VIN mismatch | On | Off | Off | Off | On | Off |
| ACC and ABS both active | Off | Off | Off | Off | Flashing | Off |
Adaptive Cruise Control/Cruise Control
The IPC provides a cruise control RTT indicator when the cruise control or adaptive cruise control system is active or in standby mode.
Airbag Warning
The IPC provides the airbag warning indicator or RTT indicator if a SRS concern is detected. If a fault is detected in the airbag circuit, the RCM sets a DTC and the IPC illuminates the airbag warning indicator or RTT warning indicator.
Auto High Beam
The IPC provides the auto high beam RTT indicator to indicate the auto high beam is active.
Auto Hold
The IPC provides the auto hold RTT indicator to indicate the state of the auto hold feature. The auto hold feature holds a vehicle stationary once it has come to a stop using the brakes, allowing the driver to remove his or her foot from the brake pedal.
Auto Stop-Start
The IPC provides the auto stop-start RTT indicator, along with multiple messages displayed throughout the auto stop-start system operation, to inform the driver of the system status and to provide direction when driver intervention is required.
The auto stop-start indicator informs the driver of the following states:
| Indicator State | System Status |
|---|---|
| Solid green | The auto stop-start feature has temporarily turned off the engine. |
| Solid amber | A stop-start system concern exists. |
| Flash in either green or amber | A system state as determined by the PCM. |
Blind Spot Monitoring System (BLIS®) Off
The IPC provides a BLIS off RTT indicator to inform the driver the BLIS is turned off. The IPC receives the CTA left status, CTA right status, side obstacle detect status-left and side obstacle detect status-right messages from the GWM over the HS-CAN3. The GWM receives the CTA left status and side obstacle detect status-left status from the SODL, and the CTA right status and side obstacle detect status-right messages from the SODR over the MS-CAN.
Brake Warning
The brake warning RTT 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 messaged inputs to control the brake warning RTT indicator.
Refer to ABS /Brake/Stability-Traction Control System Indication description for information on the conditions when the brake warning indicator is turned on.
Charge Warning (12-Volt Battery)
The IPC provides a charging system indicator or RTT indicator along with message displays indicating the charging system status. When a fault is present in the charging system, the BCM sends the battery low state of charge message to the IPC to display message center warning messages and the charging system RTT indicator.
Door, Liftgate, Hood Ajar
The IPC provides a door ajar RTT indicator along with message displays to indicate the status of the doors, liftgate and hood. The BCM monitors each of the ajar inputs (driver, passenger, left rear, right rear, liftgate and hood) and sends a door ajar status, liftgate ajar status or hood ajar status message to the IPC to display the ajar warning RTT indicator and corresponding warning message.
Drive Mode - Normal, Sport, ECO, Tow/Haul, Slippery, Sand, Mud/Ruts
The IPC provides a drive mode RTT indicator when a specific drive mode is selected.
Electric Park Brake
The electric park brake RTT indicator illuminates when a fault in the electric park brake system is detected.
Engine Over-Temperature Warning
The IPC provides an engine over-temperature warning indicator or RTT indicator to alert the driver the engine is over temperature.
Electric Vehicle (EV) Charge (PHEV)
The IPC provides an Electric Vehicle (EV) Charge RTT indicator that illuminates when the driver selects Electric Vehicle (EV) Charge mode and the feature is active. This mode uses the vehicle's engine to charge the high voltage battery.
Electric Vehicle (EV) Later (PHEV)
The IPC provides Electric Vehicle (EV) Later RTT indicator that illuminates when the driver selects Electric Vehicle (EV) Later using the Electric Vehicle (EV) selection switch. This mode allows the vehicle to run using the engine only, conserving the available electric charge for use at a later time.
Electric Vehicle (EV) Now (PHEV)
The IPC provides Electric Vehicle (EV) Now RTT indicator that illuminates when the driver selects Electric Vehicle (EV) Now using the Electric Vehicle (EV) selection switch to turn on the Electric Vehicle (EV) drive mode. This mode allows the vehicle to operate on electric power only.
Fog Lamp - Front
The IPC provides a front fog lamp indicator or RTT indicator to indicate when the front fog lamps are on.
Forward Collision Warning (Pre-Collision Assist)
The IPC provides a forward collision warning system indicator and message center message to warn the driver the vehicle is rapidly approaching another vehicle, and a collision event is possible. The IPC receives the forward collision warning indicator request from the GWM over the HS-CAN3. The GWM receives the forward collision warning indicator request from the IPMA over the HS-CAN2.
Frost Warning (Except North America)
The IPC provides a frost warning RTT indicator when the outside temperature is low enough to cause slippery road conditions. The IPC uses the outside air temperature data sent to the IPC from the HVAC module.
HEV System Fault (HEV)
The IPC provides a system fault RTT indicator to inform the driver that a vehicle system fault may exist and a powertrain shutdown may be imminent or may have already occurred. The indicator appears in the form of a vehicle with an exclamation point.
High Beam
The high beam indicator or RTT indicator informs the driver the high beams are on.
Hill Start Assist
The IPC provides a hill start assist indicator and RTT indicator to indicate when the a system fault is detected. The IPC receives the hill start assist status message from the GWM over the HS-CAN3. The GWM receives the hill start assist status message from the ABS module over the HS-CAN2.
Lane Centering Aid
The IPC provides the lane centering aid on RTT indicator to indicate the lane centering aid has been turned on, is active or in standby mode. The RTT indicator changes colors to indicate system status.
Lane Keeping System
The IPC provides the lane keeping system on RTT indicator to indicate the lane keeping system is active, in standby mode or a system fault is detected. The RTT indicator changes colors to indicate system status.
LED Low Beam Malfunction
The LED low beam malfunction indicator or RTT indicator lluminates when the LED bulb in the headlamp is not functioning correctly.
Lights On
When the parking lamps are turned on, the BCM sends the park lamp status to the IPC to illuminate the lights on indicator or RTT indicator.
Low Engine Oil Pressure Warning
The IPC uses the engine oil pressure warning indicator request and engine RPM data from the PCM to control the low engine oil pressure RTT indicator. The engine oil pressure sensor is hardwired to the PCM. The IPC requires engine RPM above 400 RPM before the message center displays the low engine oil pressure warning.
Low Fuel
To supplement the fuel gauge indication, the IPC provides the low fuel warning indicator or RTT indicator.
The IPC uses the low fuel warning indicator request message sent from the PCM through the GWM to control the low fuel indicator.
When the DTE is 80 km (25 miles), 40 km (25 miles), 20 km (10 miles) and 0 km (0 miles) for all keys, the low fuel indicator illuminates.
Low Washer Fluid Level
The low washer fluid level switch is hardwired to the IPC through a single signal circuit and is grounded through a separate ground circuit. The IPC provides a reference voltage to the washer fluid level switch. When the washer fluid is low, the washer fluid level switch closes, pulling the reference voltage low. When the IPC detects the washer fluid input is a closed circuit, it illuminates the low washer fluid level RTT indicator.
MIL (Check Engine)
The IPC provides the MIL (check engine) lamp indicator or RTT indicator when a fault in the engine or the powertrain system is detected.
Overspeed Warning (Gulf Cooperative Countries [GCC])
The IPC provides an overspeed warning RTT indicator when the vehicle speed has reached or exceeded the 120 km/h (75 mph) threshold.
Powertrain Malfunction (Wrench) Warning
The IPC provides a powertrain malfunction (wrench) indicator or RTT indicator to indicate transmission, Electronic Throttle Control (ETC), AWD, BCM and hybrid system (if equipped) concerns.
The IPC provides a powertrain malfunction (wrench) warning indicator to indicate:
- a BCM concern.
- a gearshift concern.
- a powertrain concern (Electronic Throttle Control [ETC]).
- a transmission concern.
- a HEV system or high voltage battery charging concern.
Ready to Drive (HEV)
The ready to drive indicator or RTT indicator informs the driver the vehicle is ready to be driven. Since the engine may turn on and off at different times during operation, the ready to drive indication helps eliminate the potential for the driver to interpret the engine turning off as a stall or other failure condition.
Rear Seatbelt Monitor
The IPC provides a rear seat belt monitor RTT indicator to indicate a rear seatbelt is not fastened. The IPC receives the driver rear seatbelt buckle status, passenger rear seatbelt buckle status, and rear center seatbelt buckle status messages from the GWM over the HS-CAN3. The GWM receives the driver rear seatbelt buckle status, passenger rear seatbelt buckle status and rear center seatbelt buckle status messages from the RCM over the HS-CAN2.
Seatbelt Warning/Belt-Minder
The RCM monitors the driver and passenger seatbelt positions through the seatbelt buckle switch. The RCM provides the driver and passenger seatbelt buckle status to the IPC to turn on or turn off the seatbelt warning indicator or RTT indicator.
SelectShift Gear Position
The IPC provides a gear position RTT indicator when SelectShift is activated, to display each selected transmission gear position.
Speed Limiter (Except North America)
The IPC provides the speed limiter RTT indicator to inform the driver the speed limiter feature is activated and to alert when the selected speed is exceeded. Speed limiter is part of the cruise control system.
Speed Limit Sign Recognition
The speed sign RTT indicator indicates the speed limit recognized by the system as the current posted speed limit based on the last posted speed sign recognized. The IPC uses speed sign recognition data provided by the IPMA.
Stability-Traction Control (Sliding Car Icon)
The stability-traction control (sliding car icon) indicator or RTT indicator informs the driver of the current status of the stability and traction control systems. The stability-traction control indicator illuminates when a fault condition exists or when an active traction control or stability control event is occuring.
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.
Traction Control Disabled (Sliding Car OFF Icon)
The stability-traction control is configured on/off from the console mounted switch. When the driver enables or disables the stability-traction control system, the ABS module sends the traction control off indicator request message to the IPC to illuminate or turn off the stability-traction control disabled (sliding car OFF icon) indicator or RTT indicator 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.
TPMS Warning
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 or RTT 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 TPMSRTT warning indicator. The IPC flashes the TPMSRTT warning indicator for 75 seconds then turns the indicator on solid.
Turn Indicators/Hazard (LH / RH)
When the multifunction switch is in the LH or RH turn position or if the hazard switch is on, the BCM sends the left or right turn lamp on request to the IPC to flash the turn signal indicator or RTT indicator on and off.
Vehicle Plugged In (PHEV)
The IPC provides a vehicle plugged in RTT indicator that illuminates when the vehicle is plugged into a charging source.