Lighting System

CARGO LAMP ON
The IPC illuminates the CARGO LAMP ON indicator in the message center when the Body Control Module (BCM) detects that the cargo lamp is on. The IPC receives a class 2 message from the BCM requesting illumination.

FOG LAMP
The IPC illuminates the fog lamp indicator when the body control module (BCM) detects that the fog lamps are requested. The IPC receives a class 2 message from the BCM requesting illumination.

HEADLAMPS SUGGESTED
The IPC illuminates the HEADLAMPS SUGGESTED indicator in the message center when the following occurs:
- The Twilight Sentinel control is turned off.
- The ambient light sensor detects it is dark enough outside that the headlamps and/or other exterior lamps are recommended.

HIGH BEAM
The IPC illuminates the high beam indicator when the body control module (BCM) detects that the high beams are requested. The IPC receives a class 2 message from the BCM requesting illumination.

HIGHBEAM OUT
The IPC illuminates the HIGHBEAM OUT indicator in the message center when the body control module (BCM) detects an open in one of the highbeam lamp circuits. The IPC receives a class 2 message from the BCM requesting illumination.

LIGHTS ON
The IPC illuminates the LIGHTS ON indicator when the Dash Integration Module (DIM) detects that the park lamps are requested. The IPC receives a class 2 message from the DIM indicating the park lamps status. The IPC continues to illuminate the indicator for 10 minutes when the ignition is turned OFF and the park lamps are active. After 10 minutes, the IPC requests the status of the lighting system from the DIM and continues to illuminate the indicator only if the park lamps status is active.

TURN SIGNALS
The IPC illuminates the right or left turn signal indicator when the IPC detects a turn signal request or a hazard request. If the body control module (BCM) determines that the turn signal is active for more than 1.20 km (0.75 mi), it activates an audible warning to alert the driver.

TURN SIGNAL ON?
The IPC illuminates the TURN SIGNAL ON? indicator in the message center when the IPC determines that the turn signal is active for more than 1.20 km (0.75 mi). The body control module (BCM) will also activate an audible warning.

MALFUNCTION INDICATOR LAMP (MIL)
The PCM illuminates the MIL (service engine soon or check engine) when the following occurs:
- The PCM detects a malfunction in the emissions system.
- The PCM performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
- The ignition is on, with the engine off.