Diagnostic Routine P

Diagnostic Routine P

Diagnostic Overview

The LH-RH Turn Signal, High Beam or Fog Lamp Indicator Is Never or Always On

Normal Operation and Fault Conditions

REFER to LH-RH Turn Signal Indicator , REFER to High Beam Indicator or REFER to Fog Lamp Indicator .

If the turn indicator command, headlamp high beam indicator request or fog lamp indicator request message is missing for less than 5 seconds, the IPC (Instrument Panel Cluster) defaults the turn signals, high beam or fog lamp indicator to its last state (on or off) based upon the last known good message received. If the turn indicator command, headlamp high beam indicator request or fog lamp indicator request message is missing for 5 seconds or longer, the IPC (Instrument Panel Cluster) sets DTC (Diagnostic Trouble Code) U0140:00 in continuous memory and defaults the turn signals, high beam or fog lamp indicator off.

Pinpoint Test

1. DETERMINE THE FAULT CONDITION

1. Place the headlamp switch in the HIGH BEAM position.

2. Ignition ON.

3. Observe the high beam indicator.

Does the high beam indicator illuminate?








2. CHECK THE HIGH BEAM HEADLAMPS OPERATION

1. Observe the high beam headlamps.

Do the high beam headlamps operate correctly?








3. CARRY OUT THE IPC (Instrument Panel Cluster) INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL

1. Ignition ON.

2. Using a scan tool, view the IPC (Instrument Panel Cluster) PIDs (Parameter Identifications).

3. Select the IPC (Instrument Panel Cluster) high beam indicator (HIGH_BEAM) PID (Parameter Identification).

4. Command the high beam indicator on and off. Observe the high beam indicator.

Does the high beam indicator illuminate when commanded on and turn off when commanded off?








4. CHECK THE LH (Left Hand) OR RH (Right Hand) TURN SIGNAL LAMPS OPERATION

1. Ignition ON.

2. Operate the LH (Left Hand) or RH (Right Hand) turn signal. Observe the exterior LH (Left Hand) or RH (Right Hand) turn signal lamps.

Do the turn signal lamps operate correctly?








5. CARRY OUT THE IPC (Instrument Panel Cluster) INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL

1. Using a scan tool, view the IPC (Instrument Panel Cluster) PIDs (Parameter Identifications).

2. Select the IPC (Instrument Panel Cluster) RH (Right Hand) or LH (Left Hand) turn signal indicator (RH_TURN_L) or (LH_TURN_L) PID (Parameter Identification). Command the RH (Right Hand) or LH (Left Hand) turn signal indicator on and off. Observe the LH (Left Hand) or RH (Right Hand) turn signal indicator.

Does the LH (Left Hand) or RH (Right Hand) turn signal indicator illuminate when commanded on and turn off when commanded off?








6. CHECK THE FOG LAMPS OPERATION

1. Operate the fog lamps.

Do the fog lamps operate correctly?








7. CARRY OUT THE IPC (Instrument Panel Cluster) INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL

1. Ignition ON.

2. Using a scan tool, view the IPC (Instrument Panel Cluster) PIDs (Parameter Identifications).

3. Select the IPC (Instrument Panel Cluster) high beam indicator (F_FOG_IND) PID (Parameter Identification).

4. Command the fog lamp indicator on and off. Observe the fog lamp indicator.

Does the fog lamp indicator illuminate when commanded on and turn off when commanded off?








8. 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?








9. 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.

Is DTC (Diagnostic Trouble Code) U0140:00 recorded?