FUEL INJECTOR INSPECTION[L3 Turbo]

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Operation Test

1.  Carry out the “Fuel Injector Operation Inspection”. (SeeENGINE CONTROL SYSTEM OPERATION INSPECTION[L3 Turbo].)

•  If not as specified, perform the further inspection for the fuel injectors.

Resistance Inspection

Note

•  Perform the following procedure only when directed.

1.  Turn the ignition switch to the LOCK position.

2.  Remove the battery cover. (SeeBATTERY REMOVAL/INSTALLATION[L3 Turbo].)

3.  Disconnect the negative battery cable.

4.  Remove the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION[L3 Turbo].)

5.  Disconnect the fuel injector connectors.

6.  Measure the resistance of the fuel injector using a tester.

•  If not as specified, replace the fuel injector. (SeeFUEL INJECTOR REMOVAL/INSTALLATION[L3 Turbo].)

•  If as specified but “Operation Test” is failed, carry out the “Circuit Open/Short Inspection”. Inspect for open or short circuit.

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Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (SeePCM REMOVAL/INSTALLATION[L3 Turbo].)

2.  Inspect the following wiring harnesses for an open or short circuit (continuity check).

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Open circuit

•  If there is no continuity, there is an open circuit. Repair or replace the wiring harness.

―  No.1 cylinder fuel injector terminal A and PCM terminal 2BB

―  No.2 cylinder fuel injector terminal A and PCM terminal 2BC

―  No.3 cylinder fuel injector terminal A and PCM terminal 2BD

―  No.4 cylinder fuel injector terminal A and PCM terminal 2AZ

―  No.1 cylinder fuel injector terminal B and PCM terminal 2BG

―  No.2 cylinder fuel injector terminal B and PCM terminal 2BH

―  No.3 cylinder fuel injector terminal B and PCM terminal 2BH

―  No.4 cylinder fuel injector terminal B and PCM terminal 2BG

Short circuit

•   If there is continuity, there is a short circuit. Repair or replace the wiring harness.

―  No.1 cylinder fuel injector terminal A and power supply

―  No.1 cylinder fuel injector terminal A and body ground

―  No.2 cylinder fuel injector terminal A and power supply

―  No.2 cylinder fuel injector terminal A and body ground

―  No.3 cylinder fuel injector terminal A and power supply

―  No.3 cylinder fuel injector terminal A and body ground

―  No.4 cylinder fuel injector terminal A and power supply

―  No.4 cylinder fuel injector terminal A and body ground

―  No.1 cylinder fuel injector terminal B and power supply

―  No.1 cylinder fuel injector terminal B and body ground

―  No.2 cylinder fuel injector terminal B and power supply

―  No.2 cylinder fuel injector terminal B and body ground

―  No.3 cylinder fuel injector terminal B and power supply

―  No.3 cylinder fuel injector terminal B and body ground

―  No.4 cylinder fuel injector terminal B and power supply

―  No.4 cylinder fuel injector terminal B and body ground