Yanmar 3TNV82A Troubleshooting Manual page 54

FAILURE DIAGNOSIS
Diagnosis Description
1) Initial diagnosis
with the diagnosis
tool
2) Check of
connectors/wiring
3) Failure Diagnostic
Work
1-52
DTCs (Diagnostic Trouble Codes) General Description
• Check the fault indication.
• Check the cooling water temperature and the sensor voltage.
*For details of the method and the procedure of diagnosis, see P.1-156
• Turn the key switch off to stop the engine.
• Check the engine cooling system.
• After a little, turn the key switch on to check if the DTC is detected.
*For description and procedure of engine inspection, see the Service manual
("Engine").
• Check the cooling water temperature sensor system.
*For details of the method and the procedure of diagnosis, see P.1-156
TNV DI Service Manual