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Home >> Jeep >> 2007 >> Liberty Limited, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster - Electrical Diagnostics >> Instrument Cluster >> DTC Troubleshooting >> *Brake Indicator Inoperative >> Diagnostic Test

Diagnostic Test

Possible Causes 
BRAKE FLUID LEVEL SWITCH
PARK BRAKE SWITCH
(B25) PARK BRAKE SWITCH SENSE CIRCUIT OPEN
INSTRUMENT CLUSTER


  1. 1) BRAKE FLUID LEVEL SWITCH  

    Is the BRAKE indicator only inoperative with the Park Brake engaged? 

    Yes 

    1. Go To step  2).

    No 

    1. Replace the Brake Fluid Level Switch in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST .
  2. 2) PARK BRAKE SWITCH  

    Disconnect the Park Brake Switch harness connector.

    Connect a jumper wire between the Park Brake Switch Sense circuit and ground.

    Turn the ignition on.

    Observe the BRAKE indicator.

    Did the BRAKE indicator illuminate? 

    Yes 

    1. Replace the Park Brake Switch in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go To step  3).
  3. 3) (B25) PARK BRAKE SWITCH SENSE CIRCUIT OPEN 
    Fig 1: Measuring Resistance Of Park Brake Switch Sense Circuit
    GC0046894Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Park Brake Switch harness connector.

    Disconnect the Instrument Cluster harness connector.

    Measure the resistance of the (B25) Park Brake Switch Sense circuit.

    Is the resistance above 5.0 ohms? 

    Yes 

    1. Repair the (B25) Park Brake Switch Sense circuit for an open.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Replace and configure the Instrument Cluster in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST .