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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Front Control Module (FCM) - Electrical Diagnostics >> DTC Troubleshooting >> B2304-Wiper Park Switch Input Circuit Low >> Diagnostic Test
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Diagnostic Test

  1. INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. Using the scan tool, clear all FCM DTCs.
    3. Turn the Wipers on.
    4. Using the scan tool, read the Wiper DTCs.

      Does the scan tool read: B2304-WIPER PARK SWITCH INPUT CIRCUIT LOW?

      Yes 

      • Go to step  2

      No 

  2. WIPER MOTOR 
    Fig 1: Checking Front Wiper Motor Harness Connector
    GC0120168Courtesy of CHRYSLER LLC
    1. Using the scan tool, erase DTCs.
    2. Turn the ignition off.
    3. Disconnect the Front Wiper Motor harness connector.
    4. Turn the ignition on.
    5. Wait 30 seconds
    6. Using the scan tool, read DTCs.

      Does the scan tool read: B2305-WIPER PARK SWITCH INPUT CIRCUIT HIGH?

      Yes 

      No 

      • Go to step  3
  3. (W7) FRONT WIPER MOTOR PARK SWITCH SENSE CIRCUIT SHORTED TO GROUND 
    Fig 2: Checking Front Wiper Motor Park Switch Sense Circuit Shorted To Ground
    GC0120169Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the IPM C1 harness connector.
    3. Measure the resistance between ground and the (W7) Front Wiper Park Switch Sense circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No