Yanmar 3TNV82A Troubleshooting Manual page 157

Method and Procedure of Failure Diagnosis
Work Description
1. Work with the diagnosis tool:
• Check of current failure indication
Turn the key switch off, and turn the key switch on again.
•
Connect the diagnosis tool, and check if any error is detected on the current fault indication.
•
Check the error history indication, confirm error occurrence situation if any error
Unavailable
history is indicated.
Check the detected value using the diagnosis tool. → Go to [• Check of detected
Available
value]
• Check of detected value
Check the value indicated in the "E-ECU Temperature" with the diagnosis tool "Diagnosis Test" function.
•
Indicated value
Fixed at 30°C
Ambient temperature
NG Replace E-ECU.
Turn the key switch on/off again, and perform the work [• Check of current failure
OK indication] [• Check of detected value].
Replace E-ECU.
TNV DI Service Manual
Status
NG Replace the E-ECU.
OK Replace the E-ECU.
FAILURE DIAGNOSIS
Action
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