Page 964 - Workshop Manual - Tunland (2017)
P. 964
04-278 DIAGNOSTICS - ENGINE CONTROL SYSTEM
04
Fault phenomenon Possible reasons Refer to
5. ECM
1. Fuel system
2. Fuel pipe
3. ECM
Chapter 04 Diagnosis- the
Under PTO or cruise control 4. Accelerator pedal motor control system, under
mode, motor is unstable idling 5. Fuel injector PTO or cruise control mode,
motor is unstable idling
6. Clutch
7. Gearbox
8. Turbocharger
1. Electronic throttle valve or Chapter 04 Diagnosis- the
Low idle adjustment switch
electronic throttle circuit motor control system, low idle
malfunction
2. ECM adjustment switch malfunction
1. Engine accessory belt
Chapter 04 Diagnosis- the
The generator doesn't charge 2. Charging system circuit motor control system,
or charge enough 3. Engine generator doesn't charge or
charge enough
4. Battery
1. Charging system circuit
Chapter 04 Diagnosis- the
Generator is over charged 2. Engine motor control system,
generator is over charged
3. Battery
1. Cooling system
2. Oil condenser Chapter 04 Diagnosis- the
Coolant mixed with oil or 3. Cylinder cover motor control system, coolant
transmission oil mixed with oil or transmission
4. Cylinder gasket oil
5. Cylinder block
Chapter 04 Diagnosis- the
The coolant mixed with fuel 1. Coolant motor control system, coolant
mixed with fuel
1. Cooling system
2. Cylinder block
3. Cylinder cover Chapter 04 Diagnosis- the
Coolant loss - Internal motor control system, coolant
4. Water pump loss - Internal
5. Oil condenser
6. Cylinder gasket
