Warning Lamp Interface #1 or #2

SYMPTOM: The voltage on the warning lamp sense circuit is opposite of expected state.

ASDM MONITORS CIRCUIT: Continuously, while the ignition is ON.

CODE STORED: If the condition is active when the ignition is switched OFF.

POSSIBLE CAUSE:
- Faulty warning lamp
- Open ignition feed to cluster
- Warning lamp sense circuit open
- Faulty cluster printed circuit board
- Loose or poor connection at connector(s) terminal
- Warning lamp sense circuit exposed or pinched to ground

For diagnostic procedures see DIAGNOSTIC CHARTS/TEST 1A. 1A Testing System Function