Component Test

ON-VEHICLE INSPECTION

1. INSPECT INJECTOR OPERATION.
Check operation sound from each injector.






a. With the engine running or cranking, use a sound scope to check that there is normal operating noise in proportion to engine rpm.






b. If you have no sound scope, you can check the injector transmission operation with your finger.

If no sound or an unusual sound is heard, check the wiring connector, injector, resistor, or injection signal from ECU.

2. INSPECT INJECTOR RESISTANCE.
a. Disconnect the injector connector.






b. Using an ohmmeter, measure the resistance between the terminals.

Resistance: Approx. 1.61 ohms

If the resistance is not as specified, replace the injector.

c. Reconnect the injector connector.

OFF-VEHICLE INSPECTION

1. INSPECT INJECTOR INJECTION.

WARNING: Keep clear of sparks during the test.






a. Disconnect the fuel hose from the fuel filter outlet.






b. Connect SST (union and hose) to the fuel filter outlet with new gaskets and the union bolt.

*SST 09268-41045

NOTE: Use the vehicle's fuel filter.

c. Remove the pressure regulator.






d. Connect the fuel return hose to the pressure regulator with SST (union), new gaskets and union bolt.

*SST 09268-41045






e. Install a new 0-ring to the injector.
f. Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp).

*SST 09268-41045

g. Put the injector into the graduated cylinder.

NOTE: Install the suitable vinyl hose onto the injector to prevent gasoline from splashing out.






h. Reconnect the battery negative (-) Cable.
i. Turn the ignition switch "ON".

NOTE: Do not start the engine.

j. Using a service wire, short terminals +B and FP of the check connector.






k. Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector two or three times.

*SST 09842-30070

Volume: 45 - 55 cc (2.7 - 3.4 cu.in.) per 15 sec.

Difference between each injector: 5 cc (0.3 cu in.) or less

If the injection volume is not as specified, replace the injector.

2. INSPECT LEAKAGE.
a. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.

*SST 09842-30060






Fuel drop: One drop or less per minute.

b. Disconnect the battery negative (-) cable.
c. Remove SST and the service wire.

*SST 09268-41045