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HOMESERVICE MANUALSJEEP2011WRANGLER SPORT, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESCABIN COMPARTMENT NODE (CCN) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB1098-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT OPENDIAGNOSTIC TEST
2011 Jeep Wrangler Sport, Automatic

Diagnostic Test

2011 Jeep Wrangler Sport, AutomaticSECTION Diagnostic Test
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, clear all DTCs.
    3. Operate the Heated Seat Switch in both positions several times.
      NOTE:

      Check connectors - Clean and repair as necessary.

    4. With the scan tool, read DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2.

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
      • Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. (P188) RIGHT FRONT SEAT HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE 
    Fig 1: Checking Right Front Seat Heater Control Circuit For A Short To Voltage
    GC0149662Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Heated Seat Module harness connector.
    2. Turn the ignition on.
    3. Measure the voltage on the (P188) Right Front Seat Heater Control circuit.

      Is there voltage above 0.5 volts?

      Yes 

      • Repair the (P188) Right Front Seat Heater Control circuit for a short to voltage.
      • Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3.
  3. (P188) RIGHT FRONT SEAT HEATER CONTROL CIRCUIT OPEN 
    Fig 2: Checking Seat Heater Element For A Short
    GC0149654Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance of the (P188) Right Front Seat Heater Control circuit at the Heated Seat Module harness connector to chassis ground.

      Is the resistance between 2 and 5 Ohms?

      Yes 

      • Replace the Heated Seat Module in accordance with the Service Information.
      • Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4.
  4. (Z912) SEAT HEATER GROUND CIRCUIT OPEN 
    1. Measure the resistance between ground and the (Z912) Seat Heater Ground circuit.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the open or excessive resistance in the (Z912) Seat Heater ground circuit.
      • Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Check the heater wiring in the driver seat harness for an open, if OK replace the open seat heater element(s) in accordance with the Service Information.
      • Perform 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.