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 in the right left turn control circuit.





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 DTC information.

Does the scan tool read: 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 SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Disconnect the Left Rear 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 (L63) Left Rear Turn Lamp Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.