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HOMESERVICE MANUALSJEEP2007GRAND CHEROKEE OVERLAND, 5.7 2, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSVEHICLE THEFT SECURITY SYSTEM - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB1A42-SECURITY TRANSMITTER SENSOR CIRCUIT SHORTED TOGETHERDIAGNOSTIC TEST
2007 Jeep Grand Cherokee Overland, 5.7 2, RWD

Diagnostic Test

2007 Jeep Grand Cherokee Overland, 5.7 2, RWDSECTION Diagnostic Test
  1. 1) DETERMINING IF DTC IS CURRENT 
    NOTE: Diagnose any related Communication DTC(s) before continuing.

    With a scan tool, read and record DTC(s).

    With the scan tool, clear DTC(s).

    Turn the ignition off and remove the key from the ignition.

    Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.

    Disarm the VTSS.

    Using the scan tool, read DTC(s).

    Does the DTC reset? 

    Yes 

    1. Go to step  2).

    No 

    1. DTC is not active at this time. Test complete.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  2. 2) INTRUSION SENSOR TRANSMITTER 

    Disconnect the Intrusion Sensor Transmitter connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Connect a known good Intrusion Sensor Transmitter.

    Turn the ignition on.

    With the scan tool, clear DTC(s).

    Turn the ignition off and remove the key from the ignition.

    Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.

    Disarm the VTSS.

    Using the scan tool, read DTC(s).

    Does the DTC reset? 

    Yes 

    1. Go to step  3).

    No 

    1. Replace the original Intrusion Sensor Transmitter.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  3. 3) CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL WIRE FOR A SHORT TO (G945) SENSOR GROUND 
    Fig 1: Checking Intrusion Transmitter Sensor Signal Circuit
    GC0045706Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Intrusion Sensor Transceiver connector.

    Disconnect the Intrusion Transceiver Module connector.

    Measure the resistance between the (A645) Intrusion Transmitter Sensor Signal circuit to the (G945) Sensor Ground circuit in the Intrusion Sensor Transmitter connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to the (G945) Sensor Ground circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Intrusion Transceiver Module in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .
RENDER: 1.0x

NO RELATED

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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.