Malfunctions Group 30: Electrical system
38
Fault tracing
Preconditions:
If preheating is activated the preheat symbol will be
visible in the tachometer and/or the display.
Fault conditions 1
The engine does not crank when the start/preheat
button is pushed.
Possible reason
• The neutral switch is not activated (switch open).
• The coolant temperature is below 50°C and there-
fore prehating is activated.
• Open circuit between the MDI start output and the
starter solenoid at the starter motor.
• Faulty starter solenoid at the starter motor.
• Faulty starter relay inside the MDI unit. (not re-
placeable)
Suitable action
1. Check that the neutral switch is activated (switch
closed).
2. Preheating is activated due to too cold coolant
temperature. Repress the start/preheat button
within 10 seconds to activate the starter motor.
3. Check wiring and the connections between the
MDI start output and the starter solenoid at the
starter motor.
4. Check the starter solenoid at the starter motor.
5. Try with another MDI unit.
Fault conditions 2
The preheat symbol is not visible in the tachometer
and/or the display.
Possible reason
• The coolant temperature is above 50°C and there-
fore prehating is not activated.
• Open circuit between the MDI preheating output
and the glowing plugs.
• Faulty preheat relay inside the MDI unit. (not re-
placeable)
Suitable action
1. Check the wiring and connections between the
MDI and the glowing plugs via the conductor rail.
2. Try with another MDI unit.
https://www.boat-manuals.com/
To Next Page
Loading...
