B1643

B1643-REAR LEFT TURN CONTROL CIRCUIT LOW






For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- With the Turn Signal activated.
- Set Condition:
- When the TIPM detects a LOW condition.






Diagnostic Test

1. INTERMITTENT CONDITION

Turn the ignition on.

With the Scan Tool, clear all TIPM DTC's.

Turn the Left Turn Signals on.

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 - VER 1. Body Verification Test

2. (L63) LEFT TURN SIGNAL DRIVER CIRCUIT





Turn the ignition off.

Disconnect the TIPM C6 harness connector.

Disconnect the Left Rear Tail Lamp harness connector.

Measure the resistance between ground and the (L63) Rear Left Turn Signal Driver circuit.

Is the resistance below 5.0 ohms?

Yes

- Repair the (L63) Rear Left Turn Signal Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test