B1644

B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH



- When Monitored:
Continuously

- Set Condition:
When the TIPM detects a short to battery on the Control 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: B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH?

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 LAMP
1. Turn the ignition off.
2. Inspect the Left Rear Turn Signal Lamp assembly for an open condition.

Is the inoperative bulb OK?

Yes

- Go To 3

No

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

3. TOTALLY INTEGRATED POWER MODULE
1. Turn the ignition off.
2. Disconnect the TIPM C3 connector.
3. Measure the voltage between (L63) Rear Left Turn Signal Control circuit and ground.

Is there any voltage present?

Yes

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

No

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