ENGINE (DIAGNOSTICS)(H4DOTC DIESEL) > 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:
• Model without push button start
• Model with push button start
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 connector and starter relay connector.
Connector & terminal
LHD model with push button start
(B135) No. 20 — (B225) No. 9:
LHD model without push button start
(B135) No. 20 — (B225) No. 10:
RHD model
(B135) No. 20 — (B225) No. 25:
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Is the resistance less than 1 Ω?
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Repair the harness and connector.
NOTE:
In this case, repair the following item:
• Open circuit of harness between ECM connector and starter relay connector
• Poor contact of OP joint connector (RHD model)
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2.CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR.
Measure the resistance between ECM connector and chassis ground.
Connector & terminal
(B135) No. 20 — Chassis ground:
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Is the resistance 1 MΩ or more?
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Repair the poor contact of ECM connector.
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Repair the short circuit to ground in harness between ECM connector and starter relay connector.
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