Diagnosis Procedure
1.
CHECK CONNECTOR
Turn the ignition switch OFF.
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 F37
Harness connector E22
Is the inspection result normal?
.
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.
ECM harness connector
Resistance (Ω)
Connector No.
Terminal No.
E16
132
131
Approx. 108 – 132
Is the measurement value within the specification?
.
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 Diagnosis Procedure
DTC Diagnosis Procedure
.
Is the inspection result normal?
(Present error)
Replace the ECM. Refer to Removal and Installation
ECM : Removal & Installation
.
(Past error)
Error was detected in the ECM branch line.
Repair the power supply and the ground circuit.