Operation CHARM: Car repair manuals for everyone.
Home >> Isuzu Truck >> 2007 >> i-290 4WD L4-2.9L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Testing and Inspection

Ignition System: Testing and Inspection



Electronic Ignition (EI) System Diagnosis

Circuit Description

The ignition system uses individual ignition coil/module assemblies for each cylinder. The powertrain control module (PCM) controls the individual coils by transmitting timing pulses on the ignition control (IC) circuit of each ignition coil/module to enable a spark event. The PCM monitors each IC circuit for improper voltage levels. Each ignition coil/module has the following circuits:

* An ignition voltage circuit
* A ground
* An IC circuit

Test




Step 12 - Step 14:




pro multis · About Operation CHARM