Diagnostic Test

1) CHECK FOR ACTIVE DTC
With the scan tool, read the active DTC's.

Cycle the ignition switch from off to on.

With the scan tool, read the active DTC's.

Does the scan tool display this DTC as active?

Yes
1. Go to 2).
No
1. If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2) CHECK VIN IN PCM
With the scan tool compare the VIN that is programmed into the PCM to the VIN on the vehicle.

Does the VIN programmed into the PCM match the vehicles VIN?

Yes
1. Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Hands Free Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST .
No
1. Program the correct VIN in the PCM and retest the HFM system.