B1668

B1668-REVERSE LAMP CONTROL CIRCUIT HIGH





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
The TIPM detects an open condition.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
Clear all TIPM DTC's
Shift the transmission into reverse.
With the scan tool, read DTC's.
Does the scan tool read: B1668-REVERSE LAMP 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 - VER 1. Body Verification Test

2. (L1) BACK-UP LAMP FEED CIRCUIT SHORT TO VOLTAGE




Turn the ignition off.
Disconnect the TIPM C8 harness connector.
Turn the ignition on.
Measure the voltage on the (L1) Back-up Lamp Feed circuit.
Is the voltage greater than 10.0 volts?

Yes

- Repair the (L1) Back-up Lamp Feed circuit for a short to voltage.
- 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