plymouth Workshop Repair Guides

Plymouth Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 4729 > < Component Tests and General Diagnostics
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Fuel Injector

ACTUATOR INSPECTION

Fuel Injector

CHECKING OPERATION SOUND

Using a stethoscope, listen for an operation sound ("chi-chi-chi") of injectors during idling or during cranking.

Check that as the rotating speed increases, the frequency of the operating sound also increases.

NOTE:   that even if the injector you are checking is not operating, you will hear the operating sound of the other injectors.

NOTE:  If no operating sound is heard from the injector that is being checked, check the injector drive circuit. If there is nothing wrong with the circuit,
a defective injector or engine control module is suspected.

Fuel Injector

Measurement of Resistance between Terminals

1. Remove the injector connector.
2. Measure the resistance between terminals.

Component Tests and General Diagnostics|Page 4729 > < Component Tests and General Diagnostics