Operation CHARM: Car repair manuals for everyone.

Ignition Control Module: Testing and Inspection

Fig. 1 Igniter Unit Voltage Test Connections.:




Fig. 2 Igniter Unit Continuity Test Connections.:







1. Disconnect lead wires from igniter unit.
2. Check voltage between blue wire and ground, then between black/yellow wire and ground with ignition switch in ON position, Fig. 1. Battery voltage should be present.
3. Check continuity between igniter unit terminals using an ohmmeter, Fig. 2. Continuity should be present with ohmmeter positive probe to black/yellow wire terminal and negative probe to blue wire terminal. Continuity should not be present with ohmmeter positive probe to blue wire terminal and negative probe to black/yellow wire terminal.