Possible causes – Faulty power transistor unit built into ignition coil– Ignition primary circuit is open or shorted (circuit to ignition coils)– Ignition primary circuit poor electrical connection (circuit to ignition coils)– Faulty ignition system condenser– Crankshaft position sensor circuit
Possible causes – Faulty power transistor unit built into ignition coil– Ignition primary circuit is open or shorted– Ignition primary circuit poor electrical connection– Faulty ignition system condenser– Crankshaft position sensor circuit Tech notes The most common cause that will
Possible causes – Ignition Coil No. 5 harness is open or shorted– Ignition Coil No. 5 circuit poor electrical connection– Faulty Ignition Coil No. 5– Faulty Engine Control Module (ECM) When is the code detected? The P1320 code is for
Possible causes – Ignition Coil No. 5 harness is open or shorted– Ignition Coil No. 5 circuit poor electrical connection– Faulty Ignition Coil No. 5– Faulty Engine Control Module (ECM) When is the code detected? The P1320 code is for
P1320 BUICK – IC Module 4X Ref Circuit Intermittent, No Pulses
P1320 CADILLAC – IC Module 4X Ref Circuit Intermittent, No Pulses
P1320 CHEVROLET – IC 4X Reference Circuit Intermittent
P1320 GMC – IC 4X Reference Circuit Intermittent
P1320 HYUNDAI – Ignition Coil.4