Yanmar 3TNV82A Troubleshooting Manual

Also see for 3TNV82A: Operation manual Service manual Service manual Service manual

Yanmar 3TNV82A Troubleshooting Manual Manual pdf 212 page image

FAILURE DIAGNOSIS1-210 TNV DI Service ManualFactor AnalysisFACTOR ANALYSIS2G-Type Eco-Governor Speed-Fluctuation Factor AnalysisNo. Check method Relevant DTC Remarks1 Engine speedfluctuation Insufficient fuel supply Fuel pipe clogging Check fuel system.2 Engine failure Nozzle failure etc. Check whole engine.3 Working machinefailureLoad fluctuation inworking machineCheck whole workingmachine.4Abnormal vibration ofworking machine andengineRack actuator hunting. Check vibration of fuel pump.5 Fuel pump failure Unstable injection dueto defective rack etc. Check fuel pump.6 Abnormal fluctuation ofsupply voltage Battery system failureCheck error occurrence, tooldata, and voltage withvoltmeter.ECU supply voltage systemerror: P0562/1, P0563/07 Alternator systemfailureCheck error occurrence, tooldata, and voltage withvoltmeter.Battery charging system error:P1562/4, P1568/18 Fluctuation of electricalloadCheck presence of failure inlarge-load electricalequipment such as air heater.9Wire breakage or short-circuit in harness, orconnector contactfailureCheck error occurrence, tooldata, harness shaking, andconduction with tester.ECU supply voltage systemerror: P0562/1, P0563/010 Intermittent on/off ofstart-assisting heaterWire breakage or short-circuit in heater Check conduction of heater.11 Wire breakage or short-circuit of heater relayCheck error occurrence, tooldata, impact on relay, andconduction with tester.Start-assisting relay error:P1232/4, P1233/3, P1234/212Wire breakage or short-circuit in harness, orconnector contactfailureCheck error occurrence, tooldata, harness shaking, andconduction with tester.Start-assisting relay error:P1232/4, P1233/3, P1234/2