Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTC's.
3. Operate the Rear Defrost Switch several times.
4. Cycle the ignition from on to off.
5. Turn the ignition on.
6. With the scan tool, read DTC's.
  Does the scan tool display B10C2-REAR DEFROST SWITCH STUCK?
  
  Yes
  - Go to step 2
  No
  - The conditions that caused this code to set are not present at this time. Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
SWITCH SHORTED

Fig 1: Switch Bank Connector
Courtesy of CHRYSLER LLC
1. With the scan tool, erase DTC's.
2. Disconnect the Switch Bank connector.
3. With the scan tool, read DTC's.
  Does the scan tool display B10C2-REAR DEFROST SWITCH STUCK?
  
  No
  - Replace the Switch Bank.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  Yes
  - Go to step 3
(D506) LIN BUS CIRCUIT PARTIAL SHORT TO GROUND

Fig 2: Checking LIN BUS Circuit Partial Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Cluster C3 connector.
3. Measure the resistance between ground and the (D506) LIN Bus circuit.
  Is the resistance below 10000.0 ohms?
  
  Yes
  - Repair the (D506) LIN Bus circuit for a partial short to ground.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Instrument Cluster in accordance with Service Information.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .