Procedure Note

PROCEDURE NOTE

The following troubleshooting procedures are designed for inspection of each separate systems, therefore, the procedure may vary some- what. However, troubleshooting should be performed while referring to the inspection methods described in this manual.

Before beginning inspection, it is best to first make a simple check of the fuses, fusible links and condition of the connectors.

The following troubleshooting procedures are based on the supposition that the trouble lies in either a short or open circuit in a component outside the computer or a short circuit within the computer. If engine occurs even through proper operating voltage is detected in the computer connector, then the computer is faulty and should be replaced.

Preparation

1. Remove the ECU cover under the center console.
2. Remove the ECU with the harness.

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.




Connector View/Terminal Identification




Standard Values

NOTE: If there is any problem, refer to numbers listed on left hand side of standard values chart.

Resistance Measurement

CAUTION:
Do not touch the ECU terminals.
The tester probe should be inserted into the wiring connector from the wiring side.

Check the resistance between each terminal of the wiring connectors.




^ Disconnect the connectors from the ECU.
^ Measure the resistance at each terminal.




Resistance Values