Chart 6C-4 Injector Resistance Check:

Diagnostic Flow Chart:

Fuel Injector Electrical Diagram:

CIRCUIT DESCRIPTION
The Injector Resistance Check determines if the resistance of the injectors is within specification. Injector resistances out of specification can cause driveability conditions that are intermittent or that do not show up during an injector flow check. This chart requires J39200 voltmeter.

NOTES ON FAULT TREE
1. Check injector resistance at the engine temperature when the condition occurs. Injector resistance will normally increase with increasing temperature. Faulty injectors may measure OK cold, but not hot.

2. Injector resistance and flow checks are OK. CHART 6C-5 may indicate a possible ignition problem.