Diagnostic Routine G

Diagnostic Routine G

Diagnostic Overview

One Or Both Puddle Lamps Are Inoperative

Refer to Wiring Diagram Set 89 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Courtesy Lamps .

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

- Inspect the bulbs and make sure they are OK.

- Inspect the exterior mirror for damage.

Pinpoint Test

1. DETERMINE IF BOTH PUDDLE LAMPS ARE INOPERATIVE

1. Ignition OFF.

2. Press and hold the courtesy lamp switch for 3 seconds.

Are both puddle lamps inoperative?








2. BYPASS THE BCM (Body Control Module)

1. Press and hold the courtesy lamp switch to turn the interior courtesy lamps off.

2. Disconnect: BCM (Body Control Module) C2280C.

3. NOTE: If the jumper wire fails, refer to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams. After the repair: If no DTCs (Diagnostic Trouble Codes) are present, test the system for normal operation.
If DTC (Diagnostic Trouble Code) U1000:00 is present, clear the DTCs (Diagnostic Trouble Codes) and repeat the self-test (required to enable the courtesy lamp output driver if DTC (Diagnostic Trouble Code) U1000:00 is present). Test the system for normal operation.
If DTC (Diagnostic Trouble Code) U3000:49 is present, install a new BCM (Body Control Module). REFER to Body Control Module (BCM) - without Intelligent Access (IA) or REFER to Body Control Module (BCM) - with Intelligent Access (IA) . Test the system for normal operation.

Connect:





Do the puddle lamps illuminate?








3. CHECK FOR VOLTAGE TO THE PUDDLE LAMP

1. Press and hold the courtesy lamp switch to turn the interior courtesy lamps off.

2. Disconnect: Inoperative Exterior Mirror.

3. Press and hold the courtesy lamp switch for 3 seconds.

4. Measure:





Is the voltage greater than 11 volts?








4. CHECK THE PUDDLE LAMP GROUND CIRCUIT FOR AN OPEN

1. Measure:





Is the voltage greater than 11 volts?








5. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Disconnect the BCM (Body Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals - clean module pins)
- corrosion (install new connector or terminals - clean module pins)
- pushed-out pins - install new pins as necessary

3. Reconnect the BCM (Body Control Module) connectors and make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?