Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADAS(PARK ASSIST MODULE (PAM) (PTS/PAM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU0401-00-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCMDIAGNOSTIC TEST

2014 Jeep Grand Cherokee Laredo, AWD

Diagnostic Test

2014 Jeep Grand Cherokee Laredo, AWDSECTION Diagnostic Test

CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read Park Assist Module 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 .
VERIFY PCM IS ACTIVE ON THE CAN BUS
1. With the scan tool, select ECU View.
2. Verify that the PCM is active on the bus.
  Is the PCM active on the bus?
  
  Yes
  - Go To 3
  No
  - Refer to DIAGNOSIS AND TESTING and perform the No Response from PCM diagnostic procedure.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
DTCS STORED OR ACTIVE IN THE PCM
1. With the scan tool, read PCM DTCs.
  Are any DTCs active or stored in the PCM?
  
  Yes
  - Refer to DTC INDEX and perform the appropriate diagnostic procedure.
  No
  - Go To 4
ACTIVE COMMUNICATION DTCS IN THE BCM
1. With the scan tool, select ECU View and select BCM.
2. With the scan tool, read active DTCs.
  Are any Communication DTCs active in the BCM?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Replace and program the Park Assist Module in accordance with the Service Information. Refer to MODULE, PARK ASSIST, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

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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.