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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Communication - Non-DTC Based Diagnostics >> Diagnosis And Testing >> No Response From CCN (Cluster) - Start/Stop >> Diagnostic Test

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

    1. Turn the ignition on.
      NOTE:

      Make sure the battery voltage is between 10.0 and 16.0 volts.

    2. With the scan tool, read the module status.
      NOTE:

      Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.

      Does the scan tool indicate that the module is active on the bus?

      Yes 

      • The no response condition is 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.

      No 

      • Go To  2
  2. CHECK THE (A971) AND (A412) FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT 
    Fig 1: Checking Each Fused B (+) Circuit Using 12-Volt Test Light Connected To Ground
    GC0102339Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Cluster C1, C2 and C3 harness connectors.
    3. Using a 12-volt test light connected to ground, check the (A971) and (A412) Fused B(+) circuits.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To  3

      No 

      • Repair the open or short in the (A971) or (A412) Fused B(+) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (Z914) GROUND CIRCUIT FOR AN OPEN 
    Fig 2: Checking Each Ground Circuit Using 12-Volt Test Light Connected To 12 Volts
    GC0102340Courtesy of CHRYSLER GROUP, LLC
    1. Using a 12-volt test light connected to 12-volts, check each (Z914) Ground circuit.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To  4

      No 

      • Repair the open in the (Z914) Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (F743) IGNITION RUN START CIRCUIT FOR AN OPEN OR SHORT 
    Fig 3: Checking Fused Run/Start Relay Output Circuit Using 12-Volt Test Light Connected To Ground
    GC0102341Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F743) Ignition Run Start circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5

      No 

      • Repair the open or short in the (F743) Ignition Run Start circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK THE (D265) OR (D264) CAN C INTERIOR BUS (125K) CIRCUIT FOR AN OPEN 
    Fig 4: Measuring Resistance Of CAN C Interior Bus (-/+) Circuits
    GC0102342Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (D264) CAN C Interior Bus (-) (125K) circuit between the TIPM C7 harness connector and the Cluster C2 harness connector.
    2. Measure the resistance of the (D265) CAN C Interior Bus (+) (125K) circuit between the TIPM C7 harness connector and the Cluster C2 harness connector.

      Are the resistances 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 (D265) or (D264) CAN C Interior Bus (125K) circuit. Inspect the connector for damage.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .