SIGNAL SPECIFICATION (2007-11)
All the values given below are between the terminals stated in column 1 and terminal #40 in column 1 (power ground). This applies unless otherwise indicated in brackets.
Note. It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
|---|---|---|---|
| U bat = | Battery voltage (V) | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | T = | Time in seconds |
| PWM = | Pulse width modulated signal as a % |
Connector C1
Scheme 3
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Ignition off | Other |
|---|---|---|---|---|---|
| #25 | #C1-1 | 30 supply, power supply | U = U bat | U = U bat | |
| #26 | #C1-2 | Blower fan | U= 0 V- U bat | U= U low | PWM with offset |
| #27 | #C1-3 | Reserve | |||
| #28 | #C1-4 | Power supply, blower fan passenger compartment temperature sensor | U = U bat | U= U low | |
| #29 | #C1-5 | Signal (+), Evaporator temperature sensor. | U= 0.2-4.8 V | U= 0.2-4.8 V | Temperature dependent |
| #30 | #C1-6 | Signal (+), passenger compartment temperature sensor | U= 0.4-4.8 V | U= 0.4-4.8 V | Temperature dependent |
| #31 | #C1-7 | LIN bus 2 | Digital signal | Digital signal | Communication with components, LIN bus 2 |
| #32 | #C1-8 | MS CAN L1 | Digital signal | Digital signal | |
| #33 | #C1-9 | MS CAN L2 | Digital signal | Digital signal | |
| #34 | #C1-10 | MS CAN H1 | Digital signal | Digital signal | |
| #35 | #C1-11 | MS CAN H2 | Digital signal | Digital signal | |
| #36 | #C1-12 | LIN bus 1 | Digital signal | Digital signal | Communication with components, LIN bus 1 |
| #37 | #C1-13 | Signal, Air quality sensor | |||
| #38 | #C1-14 | Signal (-), passenger compartment temperature sensor and evaporator temperature sensor | U= U low | U= U low | |
| #39 | #C1-15 | Reserve | |||
| #40 | #C1-16 | Power ground | U= U low | U= U low |
SIGNAL TABLE
SIGNAL SPECIFICATION (2012)
All values given below are between the connection stated in column 1 and connection #22 in column 1 (power ground). This applies unless otherwise indicated in brackets.
Note. It is important to connect the breakout box and check the ground connections before starting to measure.
| U= | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
|---|---|---|---|
| U bat = | Battery voltage (V) | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | T = | Time in seconds |
| PWM = | Pulse width modulated signal as a % |
Connector C1
Scheme 4
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Ignition off | Miscellaneous |
|---|---|---|---|---|---|
| #1 | #C1-1 | 30 supply, power supply | U = U bat | U = U bat | |
| #2 | #C1-2 | MS CAN L | Digital signal | Digital signal | |
| #3 | #C1-3 | MS CAN H | Digital signal | Digital signal | |
| #4 | #C1-4 | LIN bus 1 | Digital signal | Digital signal | Communication with components, LIN bus 1 |
| #5 | #C1-5 | LIN bus 2 | Digital signal | Digital signal | Communication with components, LIN bus 2 |
| #6 | #C1-6 | Reserve | |||
| #7 | #C1-7 | Reserve | |||
| #8 | #C1-8 | Reserve | |||
| #9 | #C1-9 | Reserve | |||
| #10 | #C1-10 | Reserve | |||
| #11 | #C1-11 | Reserve | |||
| #12 | #C1-12 | Blower fan | U=0 V- U bat | U=U low | PWM with offset |
| #13 | #C1-13 | Reserve | |||
| #14 | #C1-14 | Signal, Air quality sensor | |||
| #15 | #C1-15 | Reserve | |||
| #16 | #C1-16 | Ground, evaporator temperature sensor | U=U low | U=U low | |
| #17 | #C1-17 | Signal (+), evaporator temperature sensor | U= 0.2-4.8 V | U= 0.2-4.8 V | Temperature dependent |
| #18 | #C1-18 | Reserve | |||
| #19 | #C1-19 | Reserve | |||
| #20 | #C1-20 | Reserve | |||
| #21 | #C1-21 | Reserve | |||
| #22 | #C1-22 | Power ground | U= U low | U= U low |
SIGNAL TABLE
Scheme 5
Type
characteristic
Resistance is approx. 3150 ohms at + 20°C.
Other information
None.
Scheme 6
| Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|
| #2 | #2 in 8-pin internal connector | Coolant temperature sensor, signal | |
| #6 | #6 in 8-pin internal connector | Coolant temperature sensor, ground |
Scheme 7
Type
characteristic
Resistance is 55-60 ohms at + 20°C.
Other information
None.
SIGNAL SPECIFICATION
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.
| U= | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
|---|---|---|---|
| U bat = | Battery voltage (V) | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | % duty = | Duty cycle (pulse ratio) in percent (%) |
| T = | Time in milliseconds (ms) |
Scheme 8
| Terminal connector | Control module terminal | Signal type | Ignition on | Heater running | Other |
|---|---|---|---|---|---|
| #1 | |||||
| #2 | #2 8-pin connector | Communication cable, remote start unit | Digital signal | ||
| #3 | #1 2-pin connector | 30-feed (Power supply from battery) | U bat | ||
| #4 | #2 2-pin connector | Power ground (Measured to the negative battery terminal) | U low | ||
| #5 | |||||
| #6 | #4 8-pin connector | Control modules communication cable (CAN L) | U= 2-3 V | Digital signal | |
| #7 | #5 8-pin connector | Fuel pump, control signal | Pulsed signal with fixed frequency 5 Hz | Digital signal | |
| #8 | |||||
| #9 | #2 3-pin connector | Coolant pump, ground | U low | ||
| #10 | #3 3-pin connector | Coolant pump, control signal | The pulse ratio (% duty) increases with fan speed. | ||
| #11 | #7 8-pin connector | Control modules communication cable (CAN H) | U= 2-3 V | Digital signal | |
| #12 | |||||