Corolla Sedan L4-96.8 1587cc 1.6L DOHC (4A-FE) (1989)
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Engine Control Module: Testing and Inspection
EFI System Check Procedure
EFI SYSTEM CHECK PROCEDURE
Preparation
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Remove the ECU cover.
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Remove the ECU with wire harness.
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Turn the ignition switch ON.
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Measure the voltage at each terminal.
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.
NOTE: If there is any problem refer to the test numbers on the left hand side of the image.
Connector View/Terminal Identification