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HOMESERVICE MANUALSJEEP2014COMPASS LIMITED, AWD, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESTOTALLY INTEGRATED POWER MODULE (TIPM) - DTCS B222C TO U1108DIAGNOSIS AND TESTINGU0026-CAN B BUS (-) CIRCUIT HIGHDIAGNOSTIC TEST
2014 Jeep Compass Limited, AWD, Automatic CVT Trans

Diagnostic Test

2014 Jeep Compass Limited, AWD, Automatic CVT TransSECTION 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.
    2. With the scan tool, record and erase TIPM DTCs.
    3. Cycle the ignition from on to off three times.
    4. Turn the ignition on.
    5. With the scan tool, read active TIPM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
  2. CHECK THE (D54) CAN B BUS (-) CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking CAN B Bus (-) Circuit For Short To Voltage
    GC0100289Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Totally Integrated Power Module C3 harness connector.
    3. Turn the ignition on.
    4. Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.

      Is voltage above 10.0 volts?

      Yes 

      • Go To  3

      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 .
  3. (D54) CAN B BUS (-) CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Checking CAN B Bus (-) Circuit For Short To Voltage
    GC0100289Courtesy of CHRYSLER GROUP, LLC
    1. Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.
    2. While monitoring the voltmeter, disconnect each CAN B Bus module one at a time.
      NOTE:

      When performing the above step, turn the ignition off (wait one minute) before disconnecting any module. When the module is disconnected turn the ignition on to check for a short to voltage.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.