LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 ((Cabin Compartment Node (CCN) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0161-Lost Communication With Compass Module >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Remove any electronic devices (laptop computers, cell phones) from the instrument panel.

    NOTE:

    Before proceeding, check the compass variance and calibration in accordance with the Service Information.

    1. Turn the ignition on.
    2. With the scan tool, record and erase DTCs.
    3. Wait 30 seconds.
    4. With the scan tool, read DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. (D506) LIN BUS CIRCUIT 
    Fig 1: Measuring Voltage Of LIN BUS Circuit
    GC0102255Courtesy of CHRYSLER GROUP, 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 volts?

      Yes 

      • Go To  4

      No 

      • Go To  3
  3. (D506) LIN BUS CIRCUIT OPEN 
    Fig 2: Measure Resistance Of LIN BUS Circuit
    GC0102256Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Instrument Cluster C2 harness connector.
    3. Measure the resistance of the (D506) LIN BUS circuit.

      Is the resistance below 10K ohms?

      Yes 

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

      No 

      • Repair the (D506) LIN BUS circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. (F921) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN 
    Fig 3: Checking Fused Run Relay Output Circuit For An Open
    GC0102211Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F921) Fused Ignition Switch Output (RUN) circuit at the Compass Module harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5

      No 

      • Repair the (F921) Fused Ignition Switch Output (RUN) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. (Z916) GROUND CIRCUIT OPEN 
    Fig 4: Checking Ground Circuit For An Open
    GC0102212Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Using a 12-volt test light connected to 12-volts, check the (Z916) Ground circuit at the Compass Module harness connector.

      Does the test light illuminate brightly?

      Yes 

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

      No 

      • Repair the (Z916) ground circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
scientia non olet · About LEMON Manuals