XG 350 V6-3.5L (2002)
2. When engine coolant temperature is lower than 0 °C (32 °F), the PCM fires all four cylinders simultaneously
3. When the vehicle is new (within initial operation of about 500 km [300 miles]), the injector drive time may be about 10% longer.
USING STETHOSCOPE AND VOLTMETER
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: Ensure 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 vibration is felt, check the wiring connector, injector or
injection signal from the PCM.
Resistance Measurement Between Terminals
3. Disconnect the connector at the injector.
4. Measure the resistance between terminals.
Standard value: 13 - 16 ohm [at 20 °C (68 °F)]
5. Re-connect the connector to the injector.
TROUBLESHOOTING HINTS
1. If the engine is hard to start when hot, check for fuel pressure and injector leaks.
2. If the injectors do not operate when the engine is cranked, then check the followings:
-
Defective power supply circuit to the PCM, faulty ground circuit
-
Defective control relay
-
Defective crankshaft position (CKP) sensor or camshaft position (CMP) sensor
