B1648

B1648-REAR RIGHT TURN CONTROL CIRCUIT HIGH

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects an open or short to battery on the Right Rear Turn Signal Control circuit.





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

Does the scan tool read: B1648-REAR RIGHT 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. (L62) RIGHT REAR TURN SIGNAL CONTROL CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Disconnect the Right Tail Lamp Assembly C1 harness connector.
4. Measure the resistance of the (L62) Right Rear Turn Signal Control circuit.

Is the resistance above 5.0 Ohms?

Yes

- Repair the (L62) Right Rear Turn Signal Control circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. (L62) RIGHT REAR TURN SIGNAL CONTROL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition on.
2. Measure for voltage on the (L62) Right Rear Turn Signal Control circuit.

Is there any voltage present?

Yes

- Repair short to voltage on the (L62) Right Rear Turn Signal Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE TIPM FOR CORRECT OPERATION
1. Turn the ignition off.
2. Reconnect the TIPM C3 harness connector.
3. Connect a 12-volt test light between ground and the (L62) Right Rear Turn Signal Control circuit in the Right Tail Lamp Assembly C1 harness connector.
4. Turn the ignition on.
5. Turn the Right Turn Signal on.

Does the test light illuminate brightly?

Yes

- Replace the Right Tail Stop Turn Lamp. Tail Stop Turn Lamp - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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