Ignitor Input Test
- Turn ignition off. Remove distributor cap and rotor. Disconnect Black/Yellow, White/Blue, Yellow/Green, and Blue wires from ignitor. Turn ignition on. Using voltmeter, check for battery voltage between Black/Yellow wire of harness and body ground.
- If voltage is not present, check for open in Black/Yellow wire between ignition switch and ignitor wiring harness connector. If voltage is present, check for voltage between White/Blue wire and body ground. If voltage is not present, check White/Blue wire and ignition coil for open circuit. If voltage is present, go to step 3).
- Disconnect PCM wiring harness connector. Check Yellow/Green wire for continuity between PCM wiring harness connector and ignitor. Check Blue wire for continuity between ignitor and tachometer. Repair or replace wiring as necessary. If wiring is okay, replace ignitor.