In Car Inspection

Operation Sound Check
1. Using a stethoscope, check the injectors for a clicking sound at idle. Check that the sound is produced at shorter intervals as the engine speed increases.

NOTE: Be sure that the sound from an adjacent injector is not being transmitted along the delivery pipe to an inoperative injector.

2. If a stethoscope is not available, check the injector operation with your finger. If no vibrations are felt, check the wiring connector, injector, or injection signal from ECM.

Resistance Measurement Between Terminals



3. Disconnect the connector at the injector.
4. Measure the resistance between terminals.

Standard value 15.9 ± 0.35 [ at 20°C (68°F) ]

5. If the resistance is not within specification, replace the injector.