ENGINE (DIAGNOSTICS)(H4DOTC) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Failure of engine to start
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode
, and Inspection Mode
.
WIRING DIAGRAM:
1.CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR.
1) Turn the ignition to OFF.
2) Disconnect the connector from ECM.
3) Remove the starter relay.
4) Measure the resistance of harness between ECM and starter relay connector.
Connector & terminal
(B135) No. 13 — (B225) No. 10:
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Is the resistance less than 1 Ω?
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Repair the open circuit of harness between ECM and starter relay connector.
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2.CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR.
1) Disconnect the connector from starter motor.
2) Measure the resistance between ECM and chassis ground.
Connector & terminal
(B135) No. 13 — Chassis ground:
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Is the resistance 1 MΩ or more?
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Repair the poor contact of ECM connector. Replace the ECM if defective. 
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Repair the short circuit to ground in harness between ECM and starter relay connector.
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