The instrument panel cluster (IPC) indicators illuminate by one of the following methods:
| • | The IPC detects a concern with a discrete input. |
| • | A module sends an indicator illumination request message, via the class 2 serial data line. |
The driver information center (DIC) may display messages when some indicators illuminate. Several different conditions may illuminate some IPC indicators.
ABS (ISO Symbol) (Amber)
The ABS indicator may only be ON during RUN. The IPC illuminates the ABS indicator under the following conditions:
| • | During the bulb check |
| • | The electronic brake control module (EBCM) sends a class 2 serial data message requesting illumination due to a concern in the ABS system. |
| • | The IPC detects a loss of communications with the EBCM and the back-up discrete ABS indicator signal is open. |
When the ABS indicator is ON, the IPC also illuminates the TRACTION OFF indicator and displays the SERVICE STABILITY SYSTEM message on the DIC.
AIR BAG (Red)
The IPC illuminates the AIR BAG indicator whenever the inflatable restraint sensing and diagnostic module (SDM) sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC flashes the indicator 7 times during the bulb check. The IPC illuminates the indicator until the IPC receives a deactivate class 2 message from the SDM. The IPC illuminates the AIR BAG indicator whenever the IPC detects a loss of communications with the SDM.
Battery-No Charge (Red)
The IPC illuminates the battery-no charge indicator whenever the dash integration module (DIM) or the powertrain control module (PCM) sends a class 2 message requesting illumination, via the class 2 serial data line. The indicator identifies a charging condition or a load management condition in the electrical system. The PCM determines if a charging condition exists. The DIM determines if there is a condition in the load management. If a condition exists, the DIM commands Battery Saver Active. When the instrument cluster receives this message the indicator illuminates. The IPC also illuminates the indicator during the bulb check.
BRAKE (Red)
The IPC illuminates the BRAKE indicator under the following conditions:
| • | The park brake is on or the discrete input is closed. |
| • | A low brake fluid condition is present or the discrete input is closed. |
| • | The electronic brake control module (EBCM) sends a class 2 serial data message requesting illumination due to a concern in the ABS system. |
| • | The brake switch is not connected. |
| • | An ABS State of Health (SOH) failure is present and the discrete backup for the ABS indicator is open. |
| • | The bulb check occurs. |
Coolant Temperature Warning (Red)
The IPC illuminates the temperature indicator whenever the PCM sends a class 2 message requesting illumination. The class 2 message for the indicator is the same as that for the temperature gauge. The IPC determines when illumination of the indicator occurs based on the temperature value the IPC receives. The IPC also illuminates the indicator during bulb check.
CRUISE (Green)
The IPC illuminates the CRUISE indicator whenever the PCM sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC also illuminates the indicator during the bulb check.
Fasten Safety Belt (ISO Symbol) (Red)
The IPC illuminates the fasten safety belt indicator whenever the inflatable restraint sensing and diagnostic module (SDM) sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC also illuminates the indicator during the bulb check.
High Beam (Blue)
The high beam indicator is illuminated by the IPC when the Dash Integration Module (DIM) sends a class 2 message indicating that the high beams are on. The indicator has a connection to battery voltage for use when ignition voltage is low. The IPC also illuminates the indicator during the bulb check.
Left Turn (Green)
The IPC illuminates the left turn indicator when the IPC detects a high (voltage) input condition. The indicator turns OFF within 150 milliseconds after the cluster detects the high input is low. If the cluster determines that the turn signal remains ON for more than 1.29 km (0.8 mile), the IPC sends a class 2 message requesting the chime to sound. The signal source comes from the exterior lighting system via a discrete input.
Low Fuel (Amber)
The IPC illuminates the low fuel indicator whenever the PCM sends a class 2 message requesting illumination, via the class 2 serial data line. The indicator activates when the fuel pointer meets the edge of the low fuel warning band. The indicator deactivates when the fuel level rises above 18.9 percent.
Oil Pressure Warning (ISO Symbol) (Red)
The IPC illuminates the engine oil pressure indicator whenever the PCM sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC also illuminates the indicator during the bulb check.
Right Turn (Green)
The IPC illuminates the right turn indicator when the IPC detects a high (voltage) input condition. The indicator turns OFF within 150 milliseconds after the cluster detects the high input is low. If the cluster determines that the turn signal remains ON for more than 1.29 km (0.8 mile), the IPC sends a class 2 message requesting the chime to sound. The signal source comes from the exterior lighting system via a discrete input.
SECURITY (Amber)
The IPC illuminates the SECURITY indicator whenever the rear integration module (RIM) or Inkey theft deterrent module (VTD) sends a class 2 message requesting illumination via the class 2 serial data line. Depending on the information the IPC receives from the modules, the indicator either flashes or has a solid display. The indicator has a connection to battery voltage for use when the ignition key is OFF. The IPC requests a chime for the indicator if the power mode is RUN and the vehicle is not in PARK. The IPC also illuminates the indicator during the bulb check and when a system SOH failure is present.
SERVICE ENGINE SOON (MIL) (Amber)
The SERVICE ENGINE SOON indicator identifies the ready status of the engine's emission system. The PCM activates the indicator with a low side drive circuit. The indicator turns on when the PCM detects an emissions related failure. The PCM illuminates the indicator during the bulb check.
SERVICE VEHICLE SOON (Amber)
The IPC illuminates the service vehicle soon indicator whenever the PCM or DIM send a class 2 message requesting illumination. The indicator turns on when the PCM detects a non-emissions related failure or the DIM detects an ignition switch malfunction. The IPC will turn the indicator on if there is a loss of communications and during the bulb check.
TRACTION OFF (Amber)
The TRACTION OFF indicator may only be ON during RUN. The IPC illuminates the TRACTION OFF indicator under the following conditions:
| • | During the bulb check |
| • | The electronic brake control module (EBCM) sends a class 2 serial data message requesting illumination due to a concern in the traction control system. |
| • | The IPC detects a loss of communications with the EBCM. |
| • | Whenever the traction control system is turned off by manually pressing the traction off button |
