Yanmar 3TNV82A Troubleshooting Manual page 217

Factor Analysis
No.
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TNV DI Service Manual
Communication circuit
CAN communication failure in controller for
system failure working machine, Eco-
Governor, etc.
Wire breakage or short-
circuit in harness, or
connector contact
failure
Controller system Contact failure of
failure controller connector
Temporary failure in
controller input/output
circuit
Program or map data
failure
Control system
Unexpected strong
affected by conductive
noise or surge
noise
Control system
affected by radioactive
noise
FAILURE DIAGNOSIS
Check method
Check error occurrence, tool
data, and communication CAN communication error:
status with measuring U0001/12
instrument.
Check error occurrence, tool
CAN communication error:
data, and conduction with
U0001/12
tester.
Check error occurrence, tool
data, harness shaking, and
conduction with tester.
Check occurrence of error.
Check program and map data.
Check presence of conductive
noise.
Check presence of radioactive
noise.
Relevant DTC Remarks
1-215