2G-Type Eco-Governor Engine; Type Eco-Governor Engine Stalling/Start-Up Inability Factor Analysis - Yanmar 3TNV82A Troubleshooting Manual

Factor Analysis

2G-Type Eco-Governor Engine

Stalling/Start-Up Inability Factor Analysis
No.
Engine stalling/start-up
1
inability
2
3
4
5
6
7
8
9
10
11
12
13
TNV DI Service Manual
Engine failure Nozzle failure etc.
Working machine Excessive load on
failure working machine
Unstable injection due
Fuel pump failure
to defective rack etc.
Dropped supply
Battery system failure
voltage
Alternator system
failure
Wire breakage or short-
circuit in harness, or
connector contact
failure
Start-assisting heater Wire breakage or short-
system failure circuit in heater
Wire breakage or short-
circuit of heater relay
Wire breakage or short-
circuit in harness, or
connector contact
failure
Wire breakage or short-
CSD solenoid valve
circuit in CSD solenoid
system failure
valve
Wire breakage or short-
circuit in harness, or
connector contact
failure
Wire breakage or short-
EGR step motor
circuit in ECR step
system failure
motor
Wire breakage or short-
circuit in harness, or
connector contact
failure
FAILURE DIAGNOSIS
Check method
Check whole engine.
Check whole working
machine.
Check fuel pump.
Check error occurrence, tool
ECU supply voltage system
data, and voltage with
error: P0562/1, P0563/0
voltmeter.
Check error occurrence, tool
Battery charging system error:
data, and voltage with
P1562/4, P1568/1
voltmeter.
Check error occurrence, tool
ECU supply voltage system
data, harness shaking, and
error: P0562/1, P0563/0
conduction with tester.
Check conduction of heater.
Check error occurrence, tool
Start-assisting relay error:
data, impact on relay, and
P1232/4, P1233/3, P1234/2
conduction with tester.
Check error occurrence, tool
Start-assisting relay error:
data, harness shaking, and
P1232/4, P1233/3, P1234/2
conduction with tester.
CSD solenoid valve system
Check conduction of CSD. error: P1242/4, P1243/3,
P1244/2
Check error occurrence, tool CSD solenoid valve system
data, harness shaking, and error: P1242/4, P1243/3,
conduction with tester. P1244/2
ECR step motor system error:
Check conduction of ECR step
P1402/4, P1403/3, other
motor.
phase errors
Check error occurrence, tool ECR step motor system error:
data, harness shaking, and P1402/4, P1403/3, other
conduction with tester. phase errors
Relevant DTC Remarks
Occurs only at
low
temperatures.
1-213