Fuel Injector Inspection

NOTE: It is not necessary to remove the fuel injectors to perform the following procedures.

Resistance Inspection

1. Disconnect the fuel injector connectors.







2. Measure resistance of the fuel injectors using an ohmmeter.
- If the harness is okay, replace the fuel injector.
- If not as specified, inspect continuity of the harness, and inspect for Door connection.

Resistance: Approx. 13.8 Ohms [20 °C {68 °F}]

Fuel Leakage Inspection

WARNING: Fuel can ignite and cause serious injuries or death and damage if fuel is spilled over a hot engine. Always carry out the following procedure with the engine stopped.

1. Complete the "BEFORE REPAIR PROCEDURE".
2. Remove the fuel distributor from the intake manifold. (See FUEL INJECTOR REMOVAL/INSTALLATION)




3. Connect the fuel hoses as shown.




4. Short the DLC terminal F/P to body GND using a jumper wire.

CAUTION: Connecting to the wrong DLC terminal may cause a malfunction. Carefully connect only to the specified terminal.

5. Turn the ignition switch to ON and inspect for fuel leakage from the fuel injectors.

Fuel leakage Less than 1 drop/2 min




6. Turn off the ignition switch and disconnect the jumper wire.
- If not as specified, remove the leaking fuel injector and inspect the fuel injector fitting.

7. Install the fuel injector.
8. Inspect the fuel injector for fuel leakage.
- If leakage still occurs, replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION.)

9. Complete the "AFTER REPAIR PROCEDURE".

Volume Inspection

WARNING:
- Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
- Fuel can ignite and cause serious injuries or death and damage if it is spilled over a hot engine. Always carry out the following procedure with the engine stopped.

NOTE:
- Perform this inspection only when directed.
- If you have an after market fuel injector tester or SST, perform this inspection.
- SST No.
KL (2.5L Engine): 49 E018 9A0
KJ (2.3L Engine): 49 E018 901, 49 T018 901

- If there is no after market fuel injector tester available, perform "Simulation Test", "Resistance Inspection", and "Fuel Leakage Inspection" to verify whether the fuel injector is okay or not.

1. Complete the "BEFORE REPAIR PROCEDURE".

Using the SST

1. Remove the fuel injectors and fuel distributor from the intake manifold.




2. Connect the SST as shown.




3. Short the DLC terminal F/P to body GND using a jumper wire.

CAUTION: Connecting the wrong DLC terminal may possibly cause a malfunction. Carefully connect the specified terminal only.

4. Turn the ignition switch to ON.




5. Turn selector switch on the SST to select fuel injector number.
6. Press and hold the switch for 15 s and measure the injection volume of each fuel injector using a graduated container.

Specification
KL (2.5L Engine): 48 - 56 ml {48 - 56 cc, 1.7 - 1.8 fl oz}/15 s
KJ (2.3L Engine): 61 - 77 ml {61 - 77 cc, 2.1 - 2.6 fl oz}/15 s

7. Turn off the ignition switch and disconnect the jumper wire.
- If not as specified, replace the fuel injector.

8. Complete the AFTER REPAIR PROCEDURE".

Using a fuel injector tester

1. Remove the fuel injectors.
2. Connect the fuel injector to a fuel injector tester.

3. Measure the injection volume of each fuel injector.
- If not as specified, replace the fuel injector.

Injection volume
KL (2.5L Engine): 48 - 56 ml {48 - 56 cc, 1.7 - 1.8 fl oz)/15 s
KJ (2.3L Engine): 61 - 77 ml {61 - 77 cc, 2.1 - 2.6 fl oz)/15 s

4. Complete the "AFTER REPAIR PROCEDURE".