SIGNAL DESCRIPTION, CLIMATE CONTROL MODULE (CCM), CONNECTOR A
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) | 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) as a percentage (%) |
| T = | Time in milliseconds (ms) |
Scheme 362
| Breakout box terminal | Control module terminal | Connecting the component | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|---|
| #25 | #A1 | Splice 53/437-#1 relay central electronic module (CEM) | Signal, extended X-supply | U bat | U bat | |
| #26 | #A2 | Terminal #A3 power unit | Diagnostic signal, blower fan motor | |||
| #27 | #A3 | #A1 power unit | Control signal, blower fan motor | 0-10 mA | 0-10 mA | |
| #28 | #A4 | Signal ground | U low | U low | ||
| #29 | #A5 | Signal ground | U low | U low | ||
| #30 | #A6 | Signal ground | U low | U low | ||
| #31 | #A7 | Central electronic module (CEM) | Signal, alarm LED (in). Internally directly connected to terminal #B17 | 1.9 V 1 Hz 10% duty | 1.9 V 1 Hz 10% duty | |
| #32 | #A8 | Splice 53/425-fuse | 30-supply, power supply climate control module (CCM) | U bat | U bat | |
| #33 | #A9 | Signal ground | U low | U low | ||
| #34 | #A10 | Signal ground | U low | U low | ||
| #35 | #A11 | Control area network (CAN) bus terminal #19 steering wheel module (SWM) | PCCAN L1 | 0-5 V | 0-5 V | |
| #36 | #A12 | Control area network (CAN)-bus terminal #3 driver information module (DIM) | PCCAN L2 | 0-5 V | 0-5 V | |
| #37 | #A13 | Control area network (CAN) bus terminal #9 steering wheel module (SWM) | PCCAN H1 | 0-5 V | 0-5 V | |
| #38 | #A14 | Control area network (CAN)-bus terminal #2 driver information module (DIM) | PCCAN H2 | 0-5 V | 0-5 V | |
| #39 | #A15 | Signal ground | U low | U low | ||
| #40 | #A16 | Splice 53/438-ground 2 A-post R | Power ground (measured to the battery negative terminal) | U low | U low |
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) | 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) as a percentage (%) |
| T = | Time in milliseconds (ms) |
Scheme 363
| 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 (U low 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 (U low STD) |
| #5 | #B5 | Terminal #5 sun sensor, terminal #5 air quality sensor | Signal ground, sun sensor, air quality sensor and alarm LED | U low | U low | 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+ | ~U low | ~U low | |
| #12 | #B12 | Terminal #4 damper motors | Signal ground, damper motor control MA1 | ~U low | ~U low | |
| #13 | #B13 | Terminal #5 damper motors | Signal ground, damper motor control MA2+ | ~U low | ~U low | |
| #14 | #B14 | Terminal #6 damper motors | Signal ground, damper motor control MA2 | ~U low | ~U low | |
| #15 | #B15 | Terminal #3 evap | Signal ground, evaporator temperature sensor | ~U low | ~U low | 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-U bat | 0-U bat | Quadratic signal when the motor is running |
| #19 | #B19 | Terminal #1 damper motor temp right | Signal, damper motor temperature right | 0-U bat | 0-U bat | Quadratic signal when the motor is running |
| #20 | #B20 | #1 damper motor def | Signal, damper motor, defroster | 0-U bat | 0-U bat | Quadratic signal when the motor is operating (ECC, MCC) |
| #21 | #B21 | Terminal #1 damper motor rec | Signal, damper motor recirculation | 0-U bat | 0-U bat | 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-U bat | 0-U bat | Quadratic signal when the motor is running |
SIGNAL DESCRIPTION, CLIMATE CONTROL MODULE (CCM), CONNECTOR C
There is no breakout box for this connector.
Note. From and including w50 2001, the fan is connected directly to connector C with no wiring in-between.
| 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) as a percentage (%) |
| T = | Time in milliseconds (ms) |
| Control module terminal | Connecting the component | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #C1 | Terminal #1 Hall sensor | Power supply (H+), Hall sensor | 6.1-6.3 V | 6.1-6.3 V | |
| #C2 | Terminal #2 Hall sensor | Signal (H1), Hall sensor | 3.7 V | 3.7 V | |
| #C3 | Terminal #3 fan motor passenger compartment temperature sensor | Signal, fan motor passenger compartment temperature sensor | 1-5.2 V | 1-5.2 V | Quadratic signal when the motor is running |
| #C4 | Terminal #4 fan motor passenger compartment temperature sensor | Signal, fan motor passenger compartment temperature sensor | 1-5.2 V | 1-5.2 V | Quadratic signal when the motor is running |
| #C5 | Terminal #5 Hall sensor | Signal ground (H-), Hall sensor | 0.9-1.6 V | 0.9-1.6 V | |
| #C6 | Terminal #6 Hall sensor | Signal (H2), Hall sensor | 3.7 V | 3.7 V |
Scheme 364
Note. It is important to connect the breakout box and check the ground terminals before taking readings.
Two breakout boxes are required to take readings from the SRS control module.
Note. The terminals for connector C are split between breakout boxes 1 and 2. From model year 2003, the connectors are numbered 1-84.
- Terminals #1A-#28A correspond to terminals #1-#28
- Terminals #1B-#28B correspond to terminals #29-#56
- #1C-#28C correspond to #57-#84
| Breakout box | Terminal control module -02 | Terminal control module 03 | Function | Other |
|---|---|---|---|---|
| 1 | #1A | #1 | Signal ground | |
| 2 | #2A | #2 | Signal ground | |
| 3 | #3A | #3 | Front left side impact protection (SIPS) bag (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 4 | #4A | #4 | Front left side impact protection (SIPS) bag (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 5 | #5A | #5 | Front left seat belt tensioner (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 6 | #6A | #6 | Belt tensioner, front left (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 7 | #7A | #7 | ||
| 8 | #8A | #8 | Side impact sensor, left front | |
| 9 | #9A | #9 | Side impact sensor, left front | |
| 10 | #10A | #10 | ||
| 11 | #11A | #11 | ||
| 12 | #12A | #12 | ||
| 13 | #13A | #13 | ||
| 14 | #14A | #14 | ||
| 15 | #15A | #15 | Belt tensioner, rear left (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 16 | #16A | #16 | Belt tensioner, rear left (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 17 | #17A | #17 | Rear center seat belt tensioner (+) | Monitoring signal at normal status. Ignition pulse on deployment. Replaced by pin 24C from VIN 116811. |
| 18 | #18A | #18 | Rear center seat belt tensioner (-) | Monitoring signal at normal position. Ignition pulse on deployment. Replaced by pin 23C from chassis number 116811 inclusive. |
| 19 | #19A | #19 | ||
| 20 | #20A | #20 | ||
| 21 | #21A | #21 | Left inflatable curtain (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 22 | #22A | #22 | Left inflatable curtain (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 23 | #23A | #23 | ||
| 24 | #24A | #24 | ||
| 25 | #25A | #25 | ||
| 26 | #26A | #26 | ||
| 27 | #27A | #27 | Side impact sensor, rear left | |
| 28 | #28A | #28 | Side impact sensor, rear left | |
| 29 | #1B | #29 | ||
| 30 | #2B | #30 | Collision signal | Signal to the central electronic module (CEM) |
| 31 | #3B | #31 | ||
| 32 | #4B | #32 | SRS warning lamp | Activated |
| 33 | #5B | #33 | SRS warning lamp | Deactivated |
| 34 | #6B | #34 | Switch (+) | |
| 35 | #7B | #35 | Driver airbag, stage 1 (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 36 | #8B | #36 | Driver airbag, stage 1 (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 37 | #9B | #37 | Driver airbag, stage 2 (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 38 | #10B | #38 | Driver airbag, stage 2 (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 39 | #11B | #39 | Passenger airbag, stage 1 (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 40 | #12B | #40 | Passenger airbag, stage 1 (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 41 | #13B | #41 | Passenger airbag, stage 2 (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 42 | #14B | #42 | Passenger airbag, stage 2 (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 43 | #15B | #43 | Switch (-) | |
| 44 | #16B | #44 | ||
| 45 | #17B | #45 | ||
| 46 | #18B | #46 | ||
| 47 | #19B | #47 | ||
| 48 | #20B | #48 | ||
| 49 | #21B | #49 | ||
| 50 | #22B | #50 | ||
| 51 | #23B | #51 | Control modules communication cable (CAN H) | U=2.5-3.5 V |
| 52 | #24B | #52 | Control modules communication cable (CAN H) | U=2.5-3.5 V |
| 53 | #25B | #53 | Control modules communication cable (CAN L) | U=1.5-2.5 V |
| 54 | #26B | #54 | Control modules communication cable (CAN L) | U=1.5-2.5 V |
| 55 | #27B | #55 | X-feed voltage from the ignition switch (ignition switch pos. I and II) | Battery voltage approximately 12 V |
| 56 | #28B | #56 | 15-feed voltage (ignition switch pos. II and III) | Battery voltage approximately 12 V |
| 57 | #1C | #57 | ||
| 58 | #2C | #58 | ||
| 59 | #3C | #59 | Side airbag, front right (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 60 | #4C | #60 | Front right side impact protection (SIPS) bag (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
BREAKOUT BOX 1
| Breakout box | Terminal control module -02 | Terminal control module 03 | Function | Other |
|---|---|---|---|---|
| 1 | #5C | #61 | Front right seat belt tensioner (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 2 | #6C | #62 | Front right seat belt tensioner (-) | |
| 3 | #7C | #63 | ||
| 4 | #8C | #64 | Side impact sensor, right front | |
| 5 | #9C | #65 | Side impact sensor, right front | |
| 6 | #10C | #66 | ||
| 7 | #11C | #67 | ||
| 8 | #12C | #68 | ||
| 9 | #13C | #69 | ||
| 10 | #14C | #70 | ||
| 11 | #15C | #71 | Rear right seat belt tensioner (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 12 | #16C | #72 | Rear right seat belt tensioner (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 13 | #17C | #73 | ||
| 14 | #18C | #74 | ||
| 15 | #19C | #75 | ||
| 16 | #20C | #76 | ||
| 17 | #21C | #77 | Right inflatable curtain (+) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 18 | #22C | #78 | Right inflatable curtain (-) | Monitoring signal at normal status. Ignition pulse on deployment. |
| 19 | #23C | #79 | Rear center seat belt tensioner (-) | Monitoring signal at normal status. Ignition pulse on deployment. Replaces pin 18A from VIN 116811. |
| 20 | #24C | #80 | Rear center seat belt tensioner (+) | Monitoring signal at normal status. Ignition pulse on deployment. Replaces pin 17A from VIN 116811. |
| 21 | #25C | #81 | ||
| 22 | #26C | #82 | ||
| 23 | #27C | #83 | Side impact sensor, right rear | |
| 24 | #28C | #84 | Side impact sensor, right rear |
BREAKOUT BOX 2