Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Clear all TIPM DTCs.
3. Shift the transmission into reverse.
4. With the scan tool, read DTCs.
  Does the scan tool read: B1668-REVERSE LAMP CONTROL CIRCUIT HIGH?
  
  Yes
  - Go to step 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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(L1) BACK-UP LAMP FEED CIRCUIT SHORT TO VOLTAGE

Fig 1: Checking Back-Up Lamp Feed Circuit For Short To Voltage
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C8 harness connector.
3. Turn the ignition on.
4. 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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .