Wireless Control Module (WCM) Intermittent Condition Test

WIRELESS CONTROL MODULE (WCM) INTERMITTENT TEST

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

1. RECORD AND ERASE ALL WCM DIAGNOSTIC TROUBLE CODES (DTCS)
Using a scan tool, record and erase all DTCs from the WCM. Monitor any active codes as you work through the following steps.

- Review the code monitor and set conditions for any DTCs that are stored and attempt to reproduce the conditions listed.
- Wiggle the wiring harness and connectors of the related circuit, sensor or component.
- Turn the ignition off. Search for any Technical Service Bulletins (TSBs) that may apply.

Was the source of the customer complaint found or did any DTCs appear and stay active?

Yes

- Make the appropriate repairs and perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test or select the correct DTC procedure. Testing and Inspection.

No

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2. ATTEMPT TO REPRODUCE THE CONDITION
In the event the customer complaint cannot be duplicated due to an intermittent condition in the theft/security system, the following may aid in attempting to reproduce the condition.

- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors related to the stored code or component in question.
- Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
- If the customer concern was related to a specific fobik, ensure the fobik in question is used while attempting reproduce the condition.
- Reconnect any disconnected components and harness connectors and ensure they are properly seated.
- If numerous trouble codes were set, use a schematic and inspect any common ground or supply circuits.

Was the source of the intermittent condition located?

Yes

- Make the appropriate repairs and perform the WIRELESS CONTROL MODULE (WCM) VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

No

- The problem cannot be found at this time. If repeated intermittent failures are encountered that cannot be reproduced and the condition has prompted multiple customer visits to the dealership, document any findings on the repair order.