Celica 2WD L4-2.0L (3S-FE) (1988)
Engine Control Module: Pinout Values and Diagnostic Parameters
INSPECTION OF ELECTRONIC CONTROLLED UNIT (ECU)
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.
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Turn the ignition switch.
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Measure the voltage at each terminal.