Volvo Penta D1-13 Workshop Manual page 19

47704383 06-2013 © AB VOLVO PENTA
Fault tracing
Fault condition
Coolant temperature exceeds +110 °C (+230 °F) for
more than 15 seconds.
Possible reason
• Low coolant level.
• Blocked sea water filter or sea water intake.
• Worn impeller in seawater pump.
• Kinked/leaking/blocked hose on the suction side
(sea water).
• Slipping or broken drive belt for circulation pump.
• Defective thermostat.
• Incorrect pressure cap on expansion tank.
• Fault in the coolant temperature sensor cable
between the MDI and the sensor.
• Faulty coolant temperature sensor.
Blocked heat exchanger.
•
• Poor flow through the cooling system due to worn
coolant pump/seawater pump.
Suitable action
1 Check the coolant level.
2 Check that the system does not leak.
3 Check the drive belt tension for the coolant pump.
4 Check that the seawater intake is not blocked.
5 Check the impeller in the sea water pump.
6 Change the thermostat.
7 Check the pressure cap on the expansion tank. See
"Checking the pressure valve in the filler cap" in the
mechanical workshop manual for the engine.
8 Check the cables and the connectors between the
engine connector at the MDI and the coolant tem-
perature sensor.
9 Check the sensor.
10 Clean the heat exchanger. See "Clean the heat
exchanger" in the mechanical workshop manual for
the engine.
11 Change coolant pump / seawater pump.
30-2 Fault Tracing
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