Corolla Wagon 4WD L4-96.8 1587cc 1.6L DOHC (4A-FE) (1990)
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Engine Control Module: Testing and Inspection
Component Inspection
EFI System Check Procedure
EFI SYSTEM CHECK PROCEDURE
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