B1669

B1669-REVERSE LAMP CONTROL CIRCUIT OPEN







- When Monitored:
With the Reverse Lamps Activated.

- Set Condition:
The Totally Integrated Power Module (TIPM) detects an open in the (L1) Backup Lamp Feed circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Shift the transmission into REVERSE.
4. With the scan tool, read the DTCs.

Does the scan tool display DTC B1669-REVERSE LAMP CONTROL CIRCUIT OPEN?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. BACKUP LAMP BULBS
1. Shift the transmission into PARK/NEUTRAL.
2. Turn the ignition off.
3. Inspect the Left and Right Backup Lamp Bulb Assemblies.

Are the inoperative bulbs OK?

Yes

- Go To 3

No

- Replace the inoperative bulbs.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (L1) BACKUP LAMP FEED CIRCUIT OPEN




1. Disconnect the TIPM C8 harness connector.
2. Disconnect the Right Tail Stop/Turn Lamp harness connector.
3. Disconnect the Left Tail Stop/Turn Lamp harness connector.
4. Measure the resistance of the (L1) Backup Lamp Feed circuit.

Is the resistance above 5.0 Ohms?

Yes

- Repair the open in the (L1) Backup Lamp Feed circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.