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Home >> Jeep >> 2007 >> Liberty Limited, RWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Cluster - Electrical Diagnostics >> Instrument Cluster >> DTC Troubleshooting >> *Instrument Cluster Inoperative >> Diagnostic Test

Diagnostic Test

  1. 1) (F942) FUSED IGNITION SWITCH OUTPUT CIRCUIT SHORT TO GROUND 

    Turn the ignition off.

    Remove and inspect the #13 Fuse in the Junction Block.

    If the fuse is open, replace with proper rated fuse.

    Turn the ignition on for 1 minute.

    Turn the ignition off.

    Remove and inspect the #13 Fuse in the Junction Block.

    Is the fuse open? 

    Yes 

    1. Repair the (F942) Fused Ignition Switch Output circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go To step  2).
  2. 2) (F942) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN 
    Fig 1: Measuring Voltage Between Fused Ignition Switch Output Circuit And Ground
    GC0046896Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Instrument Cluster harness connector.

    Turn the ignition on.

    Measure the voltage between (F942) Fused Ignition Switch Output circuit and ground.

    Is the voltage above 10.5 volts? 

    Yes 

    1. Go To step  3).

    No 

    1. Repair the (F942) Fused Ignition Switch Output circuit for an open.
    2. Perform BODY VERIFICATION TEST .
  3. 3) (Z18) INSTRUMENT CLUSTER GROUND CIRCUIT OPEN 
    Fig 2: Measuring Resistance Between Ground And Instrument Cluster Ground Circuit
    GC0046897Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Instrument Cluster harness connector.

    Measure the resistance between ground and the (Z18) Instrument Cluster Ground circuit.

    Is the resistance below 5.0 ohms? 

    Yes 

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

    No 

    1. Repair the (Z18) Instrument Cluster Ground circuit for an open.
    2. Perform BODY VERIFICATION TEST .