Signal Description, Climate Control Module (CCM), Connector B
General
There may be several connections and connectors between the control module and components.
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 (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | % duty = | Duty cycle (pulse ratio) as a percentage (%) |
| t = | Time in milliseconds (ms) |
| Breakout box terminal | Terminal | Connecting the component | Signal type | Ignition on | Engine idling | Other |
| #1 | #B1 | terminal #2 evap | Signal, evaporator temperature sensor | 0.1-4.85 V | 0.1-4.85 V | ECC, MCC (Ulow STD) |
| #2 | #B2 | - | - | -V | - | - |
| #3 | #B3 | terminal #3 air quality sensor | Signal, air quality sensor | Pulse width modulation (PWM) signal, 80 Hz. 0.4-12 V. | Pulse width modulation (PWM) signal, 80 Hz. 0.4-12 V. | ECC, |
| #4 | #B4 | terminal #1 sun sensor | Signal, sun sensor | 0.78-4.62 V | 0.78-4.62 V | ECC, MCC (Ulow STD) |
| #5 | #B5 | terminal #5 sun sensor, terminal #5 air quality sensor | Signal ground, sun sensor, air quality sensor and alarm LED | Ulow | Ulow | Electronic climate control |
| #6 | #B6 | - | - | - | - | - |
| #7 | #B7 | - | - | - | - | - |
| #8 | #B8 | - | - | |||
| #9 | #B9 | - | - | |||
| #10 | #B10 | - | - | |||
| #11 | #B11 | terminal #3 damper motors | Signal ground, damper motor control MA1+ | ~Ulow | ~Ulow | |
| #12 | #B12 | terminal #4 damper motors | Signal ground, damper motor control MA1- | ~Ulow | ~Ulow | |
| #13 | #B13 | terminal #5 damper motors | Signal ground, damper motor control MA2+ | ~Ulow | ~Ulow | |
| #14 | #B14 | terminal #6 damper motors | Signal ground, damper motor control MA2- | ~Ulow | ~Ulow | |
| #15 | #B15 | terminal #3 evap | Signal ground, evaporator temperature sensor | ~Ulow | ~Ulow | Electronic climate control (ECC), Manual climate control (MCC) |
| #16 | #B16 | terminal #1, air quality sensor | Power supply, air quality sensor | 12 V | 12 V | Electronic climate control |
| #17 | #B17 | terminal #3 sun sensor | Signal, alarm LED (out). Internally directly connected to terminal #A7. | 1.9 V 1 Hz 10% duty | 1.9 V 1 Hz 10% duty | Electronic climate control |
| #18 | #B18 | terminal #1 damper motor temp left | Signal, damper motor temperature left | 0-Ubat | 0-Ubat | Quadratic signal when the motor is running |
| #19 | #B19 | terminal #1 damper motor temp right | Signal, damper motor temperature right | 0-Ubat | 0-Ubat | Quadratic signal when the motor is running |
| #20 | #B20 | #1 damper motor def | Signal, damper motor, defroster | 0-Ubat | 0-Ubat | Quadratic signal when the motor is operating (ECC, MCC) |
| #21 | #B21 | terminal #1 damper motor rec | Signal, damper motor recirculation | 0-Ubat | 0-Ubat | Quadratic signal when the motor is running |
| #22 | #B22 | terminal #1 damper motor floor/vent (ECC) terminal #1 damper motor air distribution (MCC, STD) |
Signal, damper motor floor/ventilation (ECC), air distribution (MCC, STD) | 0-Ubat | 0-Ubat | Quadratic signal when the motor is running |