B1645

B1645-REAR LEFT TURN CONTROL CIRCUIT OPEN







- When Monitored:
Continuously

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a short to battery on the left rear turn signal driver circuit.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Clear all TIPM DTCs
3. Turn the Left Turn Signal on.
4. With the scan tool, read DTCs.

Does the scan tool read: B1645-REAR LEFT TURN CONTROL CIRCUIT OPEN?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. LEFT REAR TURN SIGNAL BULB
1. Turn the ignition off.
2. Inspect the Left Rear Turn Signal Bulb Assembly.

Is the inoperative bulb OK?

Yes

- Go To 3

No

- Replace the Inoperative bulb.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (L63) LEFT REAR TURN SIGNAL DRIVER CIRCUIT




1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Disconnect the Left Rear Tail Lamp assembly.
4. Measure the resistance of the (L63) Left Rear Turn Signal Driver circuit.

Is the resistance above 5.0 Ohms?

Yes

- Repair the (L63) Turn Signal Driver circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

- Go To 4

4. TOTALLY INTEGRATED POWER MODULE (TIPM)




1. Turn the ignition on.
2. Measure for voltage on the (L63) Left Rear Turn Signal Driver circuit.

Is there any voltage present?

Yes

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

No

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