California Spec. Vehicles Only

CODE 12 - G, NE SIGNAL CIRCUIT (NO. 1)

DIAGNOSTIC PROCEDURE
1. Check resistance of each pickup coils in distributor.
- If OK proceed to step 2.
- If not OK replace distributor.

2. Check for open and short in harness and connector between engine control module (ECM) and distributor.
- If OK proceed to step 3.
- If not OK repair or replace harness or connector.

3. Check air gap.
- If OK check and replace ECM.
- If not OK replace distributor.