Diagnostic Test

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

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.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
(F20) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN

Fig 1: Checking Ignition Switch Output (Run-Start) Circuit For Open
Courtesy 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, probe the (F20) Ignition Switch output (Run-Start) circuit in 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.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
  No
  - Go To 3.
(A106) FUSED B+ OPEN OR SHORTED TO GROUND

Fig 2: Checking Fused B+ For Open Or Short To Ground
Courtesy 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, probe the (A106) Fused B+ circuit in 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.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
IGNITION SWITCH
1. Reconnect the Ignition Switch harness connector.
2. Using a 12-Volt test light connected to ground, backprobe the (F20) Ignition Switch output (Run-Start) circuit in the Ignition Switch harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Repair the (F20) Ignition Switch output (Run-Start) circuit for an open.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.
  No
  - Replace the Ignition Switch in accordance with the Service Information.
  - Refer to STANDARD PROCEDURE and perform the BODY VERIFICATION TEST.