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INJECTOR CHECK
 
 
INJECTOR
 
 
<Checking the Operation Sound>
1. Using a stethoscope or long blade screwdriver, check the operation sound ("tick-tick-tick") of injectors during idling or during cranking. Check that as the engine speed increases, the frequency of the operating sound also increases.
2. If the injector you are checking is not operating, you may hear the operating sound of the other injectors.
3. 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 ECM is suspected.
 
 
 
<Checking the Coil Resistance>
1. Disconnect the injector connector.
2. Measure the resistance between injector side connector terminal No. 1 and No. 2.
Standard value: 10.5 - 13.5 ohms [at 20°C (68°F)]
3. If the resistance deviates from standard value, replace the injector.
 
 
 
 
INJECTOR (HIGH PRESSURE)
1. Disconnect the injector (high pressure) connector.
2. Measure the resistance between injector (high pressure) side connector terminal No. 1 and No. 2.
Standard value: 1.74 - 2.04 ohms [at 20°C (68°F)]
3. Measure the resistance between injector (high pressure) body and either terminal No. 1 or terminal No. 2 of the connector at the injector (high pressure).
Standard value: No continuity
4. If the resistance is deviates from standard value, replace the injector (high pressure).