Signal Specification, Climate Control Module (CCM) [2009-2011]
SIGNAL SPECIFICATION, CLIMATE CONTROL MODULE (CCM)
General
All the values given below apply between the respective terminal (column 1) and power ground (#40). If this is not the case, it is indicated within brackets
NOTE:
It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage in volts (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | t = | Time in seconds (s) |
| PWM = | Pulse-width modulation |
CONNECTOR C1
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Ignition off | Miscellaneous |
|---|---|---|---|---|---|
| #25 | #C1:1 | 30 supply, power supply | U = Ubat | U = Ubat | - |
| #26 | #C1:2 | Blower fan | U=0 V- Ubat | U = Ulow | PWM with offset |
| #27 | #C1:3 | Reserve | - | - | - |
| #28 | #C1:4 | Power supply, blower fan passenger compartment temperature sensor | U = Ubat | U = Ulow | - |
| #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 = Ulow | U = Ulow | - |
| #39 | #C1:15 | - | - | - | - |
| #40 | #C1:16 | Power ground | U = Ulow | U = Ulow | - |