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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> (Totally Integrated Power Module (TIPM) - Electrical Diagnostics) >> DTC Troubleshooting >> B2101-Ignition Run/Start Input Circuit Low >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) 
    NOTE:

    Check all related fuses before proceeding with the diagnostic procedure.

    1. Turn the ignition on.
    2. Using the scan tool, read active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • 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.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. CHECK THE (F20) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT FOR AN OPEN 
    Fig 1: Checking Ignition Switch Output (Run-Start) Circuit For Open
    GC0102142Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C7 harness connector.
    3. Turn the ignition on.
    4. Using a 12-volt test light connected to ground, check the (F20) Ignition Switch output (Run-Start) circuit at the TIPM C7 harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (A106) FUSED B+ CIRCUIT FOR AN OPEN OR SHORT TO GROUND 
    Fig 2: Checking Fused B+ For Open Or Short To Ground
    GC0102143Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Ignition Switch harness connector.
    3. Using a 12-volt test light connected to ground, check the (A106) Fused B+ circuit at the Ignition Switch harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To  4

      No 

      • Using the wiring diagram as a guide, repair the (A106) Fused B+ circuit for an open or short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. IGNITION SWITCH 
    1. Reconnect the Ignition Switch harness connector.
    2. Turn the ignition on.
    3. Using a 12-volt test light connected to ground, backprobe the (F20) Ignition Switch output (Run-Start) circuit at the Ignition Switch harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Repair the (F20) Ignition Switch output (Run-Start) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Ignition Switch in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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