Yanmar 3TNV82A Troubleshooting Manual page 75

DTCs (Diagnostic Trouble Codes) General Description
Diagnosis Description
1) Initial diagnosis
with the diagnosis
tool
2) Check of
connectors/wiring
3) Failure Diagnostic
Work
TNV DI Service Manual
• Check the fault indication.
• Check the output signal of the start assist relay.
• Check the movement of the start assist relay by the active control function.
*For details of the method and the procedure of diagnosis, see P.1-174
• Before beginning your work, be sure to turn off the key switch.
• Check that the connector of the start assist relay is correctly inserted.
• Check that the wiring of the start assist relay is not disconnected or the
insulation of the wiring is not peeled.
• Check the resistance value of the start assist relay.
• Check the harness for correct continuity.
*For details of the method and the procedure of diagnosis, see P.1-174
FAILURE DIAGNOSIS
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