B1643

B1643-REAR LEFT TURN CONTROL CIRCUIT LOW







- When Monitored:
With the Turn Signal activated.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a low condition.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the Left Turn Signals on.
4. With the scan tool, read the DTCs.

Does the scan tool display DTC B1643-REAR LEFT TURN CONTROL CIRCUIT LOW?

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. (L63) LEFT REAR TURN LAMP DRIVER CIRCUIT




1. Turn the ignition off.
2. Disconnect the TIPM C6 harness connector.
3. Disconnect the Left Tail Stop/Turn Lamp harness connector.
4. Measure the resistance between ground and the (L63) Left Rear Turn Lamp Driver circuit.

Is the resistance below 5.0 Ohms?

Yes

- Repair the short to ground in the (L63) Left Rear Turn Lamp Driver circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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