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Home >> Jeep >> 2011 >> Compass Base, 2.0 A, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Wireless Control Module (WCM) - Electrical Diagnostics >> DTC Troubleshooting >> B2101-Ignition Run/Start Input Low >> Diagnostic Test
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Diagnostic Test

  1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT 
    NOTE:

    Diagnose any related Powertrain DTCs before continuing.

    1. With a scan tool, read and record DTCs.
    2. With the scan tool, clear DTCs.
    3. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle.
    4. Using the scan tool, read DTCs.

      Does the DTC reset?

      Yes 

      • Go To  3.

      No 

      • Go To  2.
  2. INTERMITTENT CONDITION 
    NOTE:

    Check for any of the follow conditions:

    • Poor wire to terminal connection
    • Corroded terminals
    • Backed out or loose terminals
    • Broken wire internal to the insulation
    • Dirty (partial) module ground
    1. With the ignition on, wiggle the related wires.
    2. Using a scan tool, read DTCs.

      Does the DTC reset?

      Yes 

      No 

      • DTC is not active at this time. Test complete.
  3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN 
    Fig 1: Checking Fused Ignition Switch Output (Run-Start) Circuit Open
    GC0100384Courtesy of CHRYSLER LLC
    NOTE:

    Check the related fuses to the Fused Ignition Switch Output (Run-Start) circuit. If the fuse is found to be open, repair the circuit for a shorted condition.

    1. Turn the ignition off.
    2. Disconnect the WCM harness connector.
    3. Turn the ignition on.
    4. Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the SKREEM harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go to  4.

      No 

  4. WCM 
    NOTE:

    A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing.

    1. Turn the ignition off.
    2. Reconnect the WCM connector
    3. Back probe the Fused Ignition Switch Output (Run-Start) circuit.
    4. Start the engine.
    5. Using the scan tool, view battery voltage under Data Display in the Engine category.
    6. Compare the voltage on the scan tool to the voltage reading on the voltmeter.

      Is the voltage on the scan tool equal to the voltmeter reading +/-.5 volt?

      Yes 

      No