EFI System Check Procedure

EFI SYSTEM CHECK PROCEDURE

Preparation

^ Remove the ECU cover.
^ Remove the ECU with wire harness.
^ Turn the ignition switch ON.
^ Measure the voltage at each terminal.

NOTE:
1. The EFI circuit can be checked by measuring the voltage at the wiring connectors of the ECU.
2. Perform all voltage measurements with the connectors connected.
3. Verify that the battery voltage is 11 V or above when the ignition switch is ON.

VOLTAGE MEASUREMENT




Using a voltmeter with high-impedance (10 kohm/V minimum), measure the voltage at each terminal of the wiring connector.

NOTE: If there is any problem refer to the test numbers on the left hand side of the image.




Connector View/Terminal Identification




Standard Values

RESISTANCE MEASUREMENT




Check the resistance between each terminal of the wiring connector.

CAUTION:
1. Do not touch the ECU terminals.

2. The tester probe should be inserted into the wiring connector from the wiring side.