Enhanced Testing

P0320 - Ignition/Distributor Engine Speed Input Circuit






General Description
Ignition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If ECM detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.

DTC Description
If there is no current at the 2 ignition coil group during 32 ignitions, the ECM determines that a fault exists and a DTC is stored.

Detecting Condition





Wiring Schematic