Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
ECM
Harness connector E30
Harness connector M1 Is the Inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector. 2.CHECK HARNESS FOR OPEN CIRCUIT
Disconnect the connector of ECM.
Check the resistance between the ECM harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ECM branch line. 3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to the following.