LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Communication - Non-DTC Based Diagnostics >> Diagnosis And Testing >> Diagnostic Can C (+) And/Or Diagnostic Can C (-) Circuits High >> Diagnostic Test

Diagnostic Test

  1. CHECK THE STATUS OF THE ERROR MESSAGE 
    NOTE:

    Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed.

    NOTE:

    Ensure the scan tool is updated to the latest software.

    1. With the scan tool, record the error message.
    2. Disconnect the scan tool from the Data Link Connector (DLC).
    3. Cycle the ignition from on to off 3 times.
    4. Turn the ignition on.

      Does the scan tool display this same error message?

      Yes 

      • Go To  2

      No 

      • The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
  2. DIAGNOSTIC CAN C CIRCUITS SHORTED TO VOLTAGE 
    Fig 1: Measuring Voltage Of Diagnostic CAN C Circuits
    GC0102324Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C7 harness connector.
    3. Disconnect the scan tool from the DLC.
    4. Turn the ignition on.
    5. Measure the voltage of the Diagnostic CAN C circuits.

      Is the voltage above 6.0 volts for either circuit?

      Yes 

      • Repair the Diagnostic CAN C circuits for a short to voltage.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Totally Integrated Power Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
scientia non olet · About LEMON Manuals