Circuit/System Testing

Chime Always On

1. Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Off Switch parameter is Active.
   • If not Active, refer to Headlamps Malfunction (V6) or Headlamps Malfunction (V8) .
2. Ignition ON, park lamp switch OFF, verify the scan tool Park Lamps Switch parameter is Off.
   • If not Off, refer to Park, License, and/or Tail Lamps Malfunction .
3. Ignition ON, doors closed, verify the scan tool Door Ajar Switch parameter is Door Closed.
   • If not Door Closed, refer to Courtesy Lamps Malfunction .
4. Ignition OFF, key out of the ignition, verify the scan tool Key In Ignition parameter is Inactive.
   • If not Inactive, test the key in ignition switch signal circuit terminal D for a short to ground. If the circuits tests normal, test or replace the ignition switch.

Chime Inoperative

1. Ignition ON, radio ON, adjust the radio balance and fade to the left front speaker.
   • If the speaker does not operate properly, refer to Speakers Inoperative - One or More .
2. Ignition ON, verify that the scan tool Key In Ignition Status parameter is Key In.
   • If not Key In, test the signal circuit terminal D and the ground circuit terminal E for a short to voltage or an open/high resistance. If all circuits test normal, test or replace the ignition switch.