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Home › Dodge and Ram › 2011 › Caliber Express › Repair and Diagnosis › Engine Performance › System › Cabin Compartment Node (CCN) - Electrical Diagnostics › DTC Troubleshooting › U0161-Lost Communication With Compass Module › Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs.

      Does the scan tool display: U0161-LOST COMMUNICATION WITH COMPASS MODULE?

      Yes 

      • Go To  2.

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  2. (D506) LIN BUS CIRCUIT OPEN 
    Fig 1: Checking LIN Bus Circuit Open
    GC0100459Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Compass Module harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (D506) LIN BUS circuit.

      Is the voltage above 5.0 volts?

      Yes 

      • Go To  4.

      No 

      • Go To  3.
  3. (D506) LIN BUS CIRCUIT OPEN 
    Fig 2: Measuring Resistance Of LIN Bus Circuit
    GC0138285Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Cluster C3 harness connector.
    3. Measure the resistance of the (D506) LIN BUS circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Replace the Cluster in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Repair the open in the (D506) LIN BUS circuit.
      • Perform the BODY VERIFICATION TEST. Refer to Standard Procedure .
  4. (F929) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN 
    Fig 3: Checking Fused Ignition Switch Output (Run) Circuit Open
    GC0100460Courtesy of CHRYSLER LLC
    1. Measure the voltage of the (F929) Fused Ignition Switch Output (RUN) circuit.

      Is the voltage above 10.0 volts?

      Yes 

      • Go To  5.

      No 

      • Repair the open in the (F929) Fused Ignition Switch Output (RUN) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to Standard Procedure .
  5. (Z903) GROUND CIRCUIT OPEN 
    Fig 4: Checking Ground Circuit Open
    GC0100461Courtesy of CHRYSLER LLC
    1. Measure the resistance between ground and the (Z903) Ground circuit.

      Is the resistance below 10K Ohms?

      Yes 

      • Replace the Compass Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Repair the open in the (Z903) Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to Standard Procedure .
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