Anti-Theft - With Intelligent Access (IA)

Anti-Theft - With Intelligent Access (IA)

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart






3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. NOTE: Make sure there are 2 IA (Intelligent Access) keys inside the vehicle during the self-test or the Remote Function Actuator (RFA) module DTC B10D7:31 (PATS Key: No Signal) sets. Ignore this DTC if 2 keys are not present.

NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).


5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC (Data Link Connector) are provided to the VCM (Vehicle Communication Module).

If the scan tool does not communicate with the VCM (Vehicle Communication Module) :

- Check the VCM (Vehicle Communication Module) connection to the vehicle.

- Check the scan tool connection to the VCM (Vehicle Communication Module).

- Refer to - No Power To The Scan Tool, to diagnose no power to the VCM (Vehicle Communication Module).


6. If the scan tool does not communicate with the vehicle:
- Verify the ignition is ON.
- The air bag warning indicator prove-out (other indicators may NOT prove ignition is ON) confirms ignition ON. If ignition does not turn ON, refer to Steering Column to diagnose no power in RUN.

- Verify the scan tool operation with a known good vehicle.

- Refer to - to diagnose no response from the PCM.


7. Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Information Bus.

- If the network test passes, proceed with module self-test diagnostics.


8. NOTE: The ignition must be OFF to carry out the RFA (Remote Function Actuator) module self-test.
Carry out the self-test diagnostics for the RFA (Remote Function Actuator) module and the PCM.


9. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Body Control Systems. Anti-Theft - With Intelligent Access (IA) Body Control Systems/ Body Control Module

10. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Anti-Theft - With Intelligent Access (IA)