Pinout Values and Diagnostic Parameters

INSPECTION OF ECU (Electronic Controlled Unit)


1. INSPECT VOLTAGE OF ECU

NOTE: The EFI circuit can be checked by measuring the and voltage at the wiring connectors of the ECU.





Check the voltage between each terminal of the wiring connectors.
^ Turn the ignition switch.
^ Measure the voltage at each terminal.





NOTE:
^ Perform all voltage measurements with the connectors connected.
^ Verify that the battery voltage is 11V or more when the ignition switch is ON.





2. INSPECT RESISTANCE OF ECU

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.