Yanmar 3TNV82A Troubleshooting Manual page 141

Method and Procedure of Failure Diagnosis
3. Execution check of the directive rack position control:
• Connect the all connectors (sensors, E-ECU).
• Connect the diagnosis tool, and log in to the diagnosis tool after key switch turning-on.
• Execute the directive rack position control with the diagnosis tool "Diagnosis Test: Active control".At
this time, set the rack position arbitrarily within an allowable setting range.
• After the execution, check if the rack actuator moved to the set rack position.
NG
OK
TNV DI Service Manual
Replace the fuel injection pump.
Replace the E-ECU.
FAILURE DIAGNOSIS
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