Pinout Values and Diagnostic Parameters

INSPECTION OF ECU
HINT: The EFI circuit can be checked by measuring the voltage and resistance at the wiring connectors of the engine ECU.

1. PREPARATION
(a) Disconnect the connectors from the engine ECU.
(b) Remove the locks as shown in the illustration so that the tester probe(s) can easily come in.




NOTICE:Pay attention to sections "A" and "B" in the illustration which can be easily broken.

(c) Reconnect the connectors to the engine ECU.

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

2. INSPECT VOLTAGE OF ENGINE ECU
Check the voltage between each terminal of the wiring connectors.
^ Turn the ignition switch ON.
^ Measure the voltage at each terminal.

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







VOLTAGE AT ENGINE ECU WIRING CONNECTORS


3. INSPECT RESISTANCE OF ENGINE ECU

NOTICE:
^ Do not touch the engine 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 engine ECU.
^ Measure the resistance at each terminal.