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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 (Ignition System - Electrical Diagnostics) >> Ignition System - Electrical Diagnostics >> DTC Troubleshooting >> B2105-Ignition Run/Start Control Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK FOR ACTIVE DTC 

    With the scan tool, read the active DTC's.

    Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.

    With the scan tool, read the active DTC's.

    Does the scan tool display this DTC as active? 

    Yes 

    1. Go To  2).

    No 

    1. If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  2. 2)  ORC INTERNAL SHORT TO VOLTAGE 
    Fig 1: ORC C2 Harness Connector
    GC0043541Courtesy of DAIMLERCHRYSLER CORP.
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Disconnect the ORC C2 harness connector.

    Turn the ignition on.

    Reconnect the battery.

    With the scan tool, read DTCs.

    Does the scan tool display B2105-IGNITION RUN/START CONTROL CIRCUIT HIGH? 

    Yes 

    1. Go To  3).

    No 

    1. Replace the ORC in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  3. 3)  (F200) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORT TO GROUND 
    Fig 2: Measuring Voltage Of Fused Ignition Switch Output (Run-Start) Circuit
    GC0043542Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the TIPM C7 harness connector.

    Turn the ignition on.

    Measure the voltage of the (F200) Fused Ignition Switch Output (Run-Start) circuit.

    Is the voltage above 10 volts ? 

    Yes 

    1. Repair the (F200) Fused Ignition Switch Output (Run-Start) circuit for a short to voltage.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace the TIPM in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .