FUEL INJECTOR INSPECTION[L3]

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Resistance Inspection

1.  Turn the ignition switch to the LOCK position.

2.  Disconnect the negative battery cable.

3.  Disconnect the fuel injector connector.

4.  Using a tester, inspect for the resistance between fuel injector terminals A—B.

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•  If it is within the specification, inspect the related wiring harnesses.

•  If it is not within the specification, replace the fuel injector.

Circuit Open/Short Inspection

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

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

Open circuit

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

―  Fuel injector No.1 terminal A and PCM terminal 2BB

―  Fuel injector No.2 terminal A and PCM terminal 2BC

―  Fuel injector No.3 terminal A and PCM terminal 2BD

―  Fuel injector No.4 terminal A and PCM terminal 2AZ

―  Fuel injector No.1 terminal B and main relay terminal A

―  Fuel injector No.2 terminal B and main relay terminal A

―  Fuel injector No.3 terminal B and main relay terminal A

―  Fuel injector No.4 terminal B and main relay terminal A

Short circuit

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

―  Fuel injector No.1 terminal A and power supply

―  Fuel injector No.1 terminal A and body ground

―  Fuel injector No.2 terminal A and power supply

―  Fuel injector No.2 terminal A and body ground

―  Fuel injector No.3 terminal A and power supply

―  Fuel injector No.3 terminal A and body ground

―  Fuel injector No.4 terminal A and power supply

―  Fuel injector No.4 terminal A and body ground

―  Fuel injector No.1 terminal B and body ground

―  Fuel injector No.2 terminal B and body ground

―  Fuel injector No.3 terminal B and body ground

―  Fuel injector No.4 terminal B and body ground

Leakage Inspection

Warning

•  Fuel line spills and leakage from the pressurized fuel system are dangerous. To prevent this, complete the following inspection with the engine stopped.

1.  Perform the "Fuel Line Safety Procedure" referring to the BEFORE SERVICE PRECAUTION. (See BEFORE SERVICE PRECAUTION[L3].)

2.  Disconnect the negative battery cable.

3.  Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION[L3].)

4.  Fix the fuel injector to the fuel distributor with a wire or the equivalent.

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5.  Connect the fuel hose.

6.  Start the fuel pump using the following procedure.

Using M-MDS

1.  Connect the negative battery cable.

2.  Connect the M-MDS to the DLC-2.

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3.  Using the simulation function “FP”, start the fuel pump.

Without using M-MDS

1.  Remove the fuel pump relay.

Caution

•  Short the specified terminals because shorting the wrong terminal of the main fuse block may cause malfunctions.

2.  Using a jumper wire, short fuel pump relay terminals A and E in the main fuse block.

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3.  Connect the negative battery cable and operate the fuel pump.

7.  Tilt the fuel injector at an angle of 42 ° to inspect for leakage.

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•  If it is not within the specification, replace the fuel injector.

8.  Stop the fuel pump using the following procedure:

Using M-MDS

1.  Stop the fuel pump using the "FP" simulation function.

2.  Disconnect the negative battery cable.

Without using M-MDS

1.  Disconnect the negative battery cable to stop the fuel pump.

9.  Remove the wire or equivalent securing the fuel injector.

10.  Install the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION[L3].)

11.  Inspect all parts by performing the AFTER REPAIR PROCEDURE. (See AFTER SERVICE PRECAUTION[L3].)

Injection Volume Inspection

Warning

•  Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause serious injury or death and damage. To prevent this, complete the following inspection with the engine stopped.

1.  Follow “BEFORE SERVICE PRECAUTION” before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION[L3].)

2.  Disconnect the negative battery cable.

3.  Remove the PCM.

4.  Connect the PCM connector.

5.  Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION[L3].)

6.  Fix the fuel injector to the fuel distributor with a wire or the equivalent.

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7.  Connect the corresponding fuel injector connector.

8.  Remove the fuel pump relay.

Caution

•  Short the specified terminals because shorting the wrong terminal of the main fuse block may cause malfunctions.

9.  Using a jumper wire, short fuel pump relay terminals A and E in the main fuse block.

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10.  Ground the following PCM terminals using a jumper wire and measure the injection volume of each fuel injector.

Fuel injector No.	PCM terminal
1	2BB
2	2BC
3	2BD
4	2AZ

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•  If not within the specification, replace the fuel injector.

11.  Stop the fuel pump using the following procedure:

Using M-MDS

1.  Stop the fuel pump using the "FP" simulation function.

Without using M-MDS

1.  Disconnect the negative battery cable to stop the fuel pump.

12.  Remove the wire or the equivalent securing the fuel injector.

13.  Install the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION[L3].)

14.  Inspect all related parts by performing “AFTER SERVICE PRECAUTION”. (See AFTER SERVICE PRECAUTION[L3].)

Atomization Inspection

1.  Inspect the atomization status.

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•  If not normal, replace the fuel injector.