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Home >> Dodge and Ram >> 2007 >> Nitro SLT, AWD >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition Control - Electrical Diagnostics >> Ignition Control- Electrical Diagnostics >> DTC Troubleshooting >> B2102-Ignition Run/Start Input Circuit High >> Diagnostic Test
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Diagnostic Test

  1. 1) CHECK FOR ACTIVE DTC 
    NOTE: Check to make sure the battery and charging system are operating properly. Battery and charging system problems may cause these DTC's to set.
    NOTE: Diagnose any related Powertrain DTC(s) before continuing.

    Turn the ignition on.

    With a scan tool, read, record and erase WCM/WIN (SKREEM) DTC(s).

    Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle.

    Using the scan tool, read WCM/WIN (SKREEM) DTC(s).

    Does the scan tool display this DTC as active? 

    Yes 

    1. Go to  2).

    No 

    1. The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  2. 2) (F20) IGNITION SWITCH OUTPUT (RUN-START) SHORTED TO BATTERY VOLTAGE 
    Fig 1: Using 12-Volt Test Light Connected To Ground To Probe (F20) Ignition Switch Output (Run-Start) Circuit In WCM/WIN (SKREEM) Harness Connector
    GC0061564Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the WCM/WIN (SKREEM) harness connector.

    Using a 12-volt test light connected to ground, probe the (F20) Ignition Switch Output (Run-Start) circuit in the WCM/WIN (SKREEM) harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Repair the (F20) Ignition Switch Output (Run-Start) circuit for a short to battery voltage.
    2. Perform SKREEM/SKIM VERIFICATION TEST .

    No 

    1. Replace and program the WCM/WIN (SKREEM) in accordance with the service information.
    2. Perform SKREEM/SKIM VERIFICATION TEST .