Combustion PREHEATER Module (CPM): Design: Heater
WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
The heater has the following internal electrical components:
- control module
- combustion air fan motor
- glow plug
- coolant temperature sensor
- overheating sensor
External electrical components:
- Coolant pump
- fuel pump
- remote start device (accessory)
There are 6 connectors above the control module. 3 of these are accessible from outside and are for connection to the vehicle, coolant pump and fuel pump. The other 3 are under a plastic cover and are for internal electrical components. The fan motor is directly connected to the control module circuit board with 2 pins.