Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test
- CHECK FOR ACTIVE DTC NOTE: Verify all related fuses are OK before proceeding with this test. Repair if necessary.
- Turn the ignition on.
- With a scan tool, read, record and erase WCM DTCs.
- Turn the ignition off for 30 seconds, then back on.
- Using the scan tool, read WCM DTCs.
Does the scan tool display this DTC as active?
Yes
- Go to step 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
- WIRELESS CONTROL MODULE (WCM)
Courtesy of CHRYSLER LLC
- Turn the ignition off.
- Disconnect the WCM harness connector.
- Turn the ignition on.
- Using a 12-volt test light connected to ground, probe the (F20) Ignition Switch output (Run-Start) circuit in the WCM harness connector.
Does the test light illuminate brightly?
Yes
- Replace the Wireless Control Module (WCM) in accordance with the Service Information.
- Perform the WCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Wireless Control (WCM) - Standard Procedure .
No
- Go to step 3
- (A106) FUSED B+ CIRCUIT
- Turn the ignition off.
- Disconnect the Ignition Switch harness connector.
- 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 step 4
No
- Using the wiring diagram as a guide, repair the (A106) Fused B+ circuit.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
- (F20) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
- Using an ohmmeter, measure the resistance of the (F20) Ignition Switch Output (Run-Start) circuit.
Is the resistance below 5.0 Ohms?
Yes
- Replace the Ignition Switch in accordance with the Service Infomation.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
No
- Repair the (F20) Ignition Switch Output (Run-Start) circuit for an open.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
- Using an ohmmeter, measure the resistance of the (F20) Ignition Switch Output (Run-Start) circuit.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.