Yanmar 3TNV82A Troubleshooting Manual page 169

Method and Procedure of Failure Diagnosis
Spare speed sensor
Related DTC
DTC P1340/4
Work flow
*For details of the work, see after-mentioned "<Work Description>."For the operation of the
diagnosis tool, see "Diagnosis tool Operation Manual" separately.
Initial diagnosis with the diagnosis tool
A. Check the current
failure display
Current failure
exists.
B. Check the detected
value to estimate the
cause of failure.
Failure diagnosis flow
1. Check of battery voltage
OK
2. Check of harness continuity
OK
TNV DI Service Manual
Failure with Spare Speed Sensor
DTC in the failure history indication
[Check items]:Spare speed sensor "Value"
>
• Value=0 =
NG
NG
FAILURE DIAGNOSIS
Check the failure
conditions.
Disconnected? Sensor error?
Battery replacement
Alternator check
E-ECU replacement
or
alternator check
Harness
replacement
or
019609-00E
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