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HOMESERVICE MANUALSJEEP2008PATRIOT LIMITED, FWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICES(NAVIGATION SYSTEM & TELECOMMUNICATION SYSTEM - ELECTRICAL DIAGNOSTICS)NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB1459-TELEMATICS MIRROR CONTROL CIRCUIT LOWDIAGNOSTIC TEST
2008 Jeep Patriot Limited, FWD, Standard

Diagnostic Test

2008 Jeep Patriot Limited, FWD, StandardSECTION Diagnostic Test
  1. CHECK FOR ACTIVE DTC 

    With the scan tool, read the active DTC's.

    Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.

    Attempt to make a phone call with the system.

    With the scan tool, read the active DTC's.

    Does the scan tool display this DTC as active? 

    Yes 

    1. Go To  2.

    No 

    1. If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  2. (X793) MICROPHONE FEED CIRCUIT OPEN 
    Fig 1: Measuring Resistance Of (X793) Microphone Feed Circuit Between HFM Connector And Inside Rear View Mirror Connector
    GC0016201Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Hands Free Module harness connector.

    Disconnect the Inside Rear View Mirror C2 harness connector.

    Measure the resistance of the (X793) Microphone Feed circuit between the HFM connector and the inside rear view mirror connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  3.

    No 

    1. Repair the (X793) Microphone Feed circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  3. (X793) MICROPHONE FEED CIRCUIT SHORT TO GROUND 
    Fig 2: Measuring Resistance Between Ground And (X793) Microphone Feed Circuit
    GC0016203Courtesy of CHRYSLER LLC

    Measure the resistance between ground and the (X793) Microphone Feed circuit.

    Is the resistance below 100.0 ohms? 

    Yes 

    1. Repair the (X793) Microphone Feed circuit for short to ground.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To  4.
  4. INSIDE REAR VIEW MIRROR 

    Replace the Inside Rear View Mirror in accordance with the service information.

    Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.

    Attempt to make a phone call with the system.

    With the scan tool, read the active DTC's.

    Does the scan tool display this DTC as active? 

    Yes 

    1. Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Hands Free Module in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Repair is complete.
    2. Perform BODY VERIFICATION TEST - VER 1 .
RENDER: 1.0x

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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.