Pinout Values and Diagnostic Parameters

Signal specification

General
The heater has a connector for connection to the vehicle. There are also three external connectors and four internal connectors (three under the heater cover and one under the control module) on the heater.
External connectors

2-pin connector
- #1 30-feed
- #2 Power ground

3-pin connector
- #1 Not used
- #2 Coolant pump, ground.
- #3 Coolant pump, control signal

8-pin connector
- #1 Not used
- #2 Communication cable, remote start unit
- #3 Not used
- #4 Control module communication cable (CAN L)
- #5 Fuel pump, control signal
- #6 Not used
- #7 Control module communication cable (CAN H)
- #8 Not used
Internal connectors

2-pin connector
- #1 Glow plugs
- #2 Glow plugs

4-pin connector
- #1 Not used
- #2 Not used
- #3 Fuel preheating, control signal
- #4 Fuel preheating, ground

8-pin connector
- #1 Not used
- #2 Coolant temperature sensor, signal
- #3 Overheating sensor, signal
- #4 Not used
- #5 Not used
- #6 Coolant temperature sensor, ground
- #7 Overheating sensor, ground
- #8 Not used
All values below are measured between the relevant terminal in column 1 and terminal #4 (power ground) unless otherwise stated in parenthesis after the table entry.

Note! It is important to check ground terminals before taking readings.