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Home >> Chrysler >> 2007 >> Crossfire Base, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Interior & Exterior - Electrical Diagnostics >> DTC Troubleshooting >> DTC 1491-02: Rear Spoiler Limit Switch Failure >> Diagnostic Test

Diagnostic Test

  1. 1) SPOILER LIMIT SWITCH SIGNAL (UP) CIRCUIT 
    Fig 1: Checking Switch Signal Circuit
    GC0033011Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Rear Spoiler Limit Switch harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Turn the ignition on.

    Measure the voltage of the Spoiler Limit Switch Signal (Up) circuit at the Spoiler Limit Switch harness connector.

    Is the voltage above 10.0 volts? 

    Yes 

    1. Go to  2).

    No 

    1. Go to  4).
  2. 2) SPOILER LIMIT SWITCH SIGNAL (DOWN) CIRCUIT 
    Fig 2: Measuring Voltage Of Spoiler Limit Switch Signal (Down) Circuit
    GC0033012Courtesy of CHRYSLER LLC

    With the ignition on.

    Measure the voltage of the Spoiler Limit Switch Signal (Down) circuit at the Rear Spoiler Limit Switch harness connector.

    Is the voltage above 10.0 volts? 

    Yes 

    1. Replace the Rear Spoiler Limit Switch.
    2. Perform REAR SPOILER VERIFICATION TEST .

    No 

    1. Go to  3).
  3. 3) SPOILER LIMIT SWITCH SIGNAL (DOWN) CIRCUIT SHORTED TO GROUND 
    Fig 3: Measuring Resistance Between Ground And Spoiler Limit Switch (Down) Circuit
    GC0033014Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the BCM C4 harness connector.

    Measure the resistance between ground and the Spoiler Limit Switch (Down) circuit.

    Is the resistance below 100k ohms? 

    Yes 

    1. Repair the Spoiler Limit Switch Signal (Down) circuit for a short to ground.
    2. Perform REAR SPOILER VERIFICATION TEST .

    No 

    1. Replace the Body Control Module. Refer to REMOVAL .
    2. Perform REAR SPOILER VERIFICATION TEST .
  4. 4) SPOILER LIMIT SWITCH SIGNAL (UP) CIRCUIT SHORT TO GROUND 
    Fig 4: Measuring Resistance Between Ground And Spoiler Limit Switch (Up) Circuit
    GC0033013Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the BCM C4 harness connector.

    Measure the resistance between ground and the Spoiler Limit Switch (Up) circuit.

    Is the resistance below 100k ohms? 

    Yes 

    1. Repair the Spoiler Limit Switch Signal (Up) circuit for a short to ground.
    2. Perform REAR SPOILER VERIFICATION TEST .

    No 

    1. Replace the Body Control Module. Refer to REMOVAL .
    2. Perform REAR SPOILER VERIFICATION TEST .
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