Fuel Injector: Testing and Inspection

FUEL INJECTOR INSPECTION [L3 WITH TC]

Operation Test

1. Carry out the "Fuel Injector Operation Inspection". (See Component Tests and General Diagnostics.)

- 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. Disconnect the negative battery cable.

3. Remove the fuel delivery pipe. Service and Repair

4. Disconnect the fuel injector connectors.

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

- If not as specified, replace the fuel injector. (See Service and Repair.)

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

Fuel injector resistance
- 1.0-1.2 ohms [20 °C {68 °F}]






Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See Service and Repair.)

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











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