Diagnostic Routine BH

Diagnostic Routine BH

Diagnostic Overview

The Lights On Indicator Is Never or Always On

Normal Operation and Fault Conditions

REFER to Lights On Indicator .

If the position light indication message is missing for less than 2 seconds, the IPC (Instrument Panel Cluster) defaults the lights on indicator to its last state (on or off) based upon the last known good message received.

If the position light indication message is missing for 2 seconds or longer, the IPC (Instrument Panel Cluster) sets DTC (Diagnostic Trouble Code) U0140:00 in continuous memory and defaults the lights on indicator off.

Pinpoint Test

1. CHECK THE PARKING LAMPS OPERATION

1. Place the headlamp switch in the PARKLAMP position.

2. Ignition ON.

3. Observe the parking lamps.

Do the parking lights operate correctly?







2. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE IPC (Instrument Panel Cluster) SELF-TEST

1. Using a scan tool, perform the IPC (Instrument Panel Cluster) self-test.

Are any DTC (Diagnostic Trouble Code) U0140:00 recorded?







3. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE BCM (Body Control Module) SELF-TEST

1. Using a scan tool, perform the BCM (Body Control Module) self-test.

Are any DTCs (Diagnostic Trouble Codes) recorded?







4. CHECK THE LIGHTS ON INDICATOR USING THE DEALER TEST MODE

1. Ignition OFF.

2. Enter the Dealer Test Mode. REFER to Dealer Test Mode .

3. Scroll to LED test.

4. Monitor the lights on indicator.

Does the lights on indicator illuminate?