Climate Control Unit Inputs and Outputs
CONNECTOR A
| Cavity | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | BLK | GND | Climate control unit ground (G403) | Less than 0.2 V at all times |
| 3 | RED | DISP CLK | Inputs clock signal from audio-HVAC display unit | With ignition switch ON (II), or vehicle in ON mode: pulses |
| 4 | PUR | DISP SO | Outputs display data to audio-HVAC display unit | With ignition switch ON (II), or vehicle in ON mode: pulses |
| 5 | BLU | M-DEF (Ps) | Drives passenger's mode control motor to DEF | With ignition switch ON (II), or vehicle in ON mode, and motor moving to DEF: battery voltage |
| 6 | GRY | M-VENT (Ps) | Drives passenger's mode control motor to VENT | With ignition switch ON (II), or vehicle in ON mode, and motor moving to VENT: battery voltage |
| 7 | GRY | M-DEF (Dr) | Drives driver's mode control motor to DEF | With ignition switch ON (II), or vehicle in ON mode, and motor moving to DEF: battery voltage |
| 8 | WHT | M-VENT (Dr) | Drives driver's mode control motor to VENT | With ignition switch ON (II), or vehicle in ON mode, and motor moving to VENT: battery voltage |
| 9 | LT BLU | M-COOL (Ps) | Drives passenger's air mix control motor to COOL | With ignition switch ON (II), or vehicle in ON mode, and motor moving to COOL: battery voltage |
| 10 | LT GRN | M-HOT (Ps) | Drives passenger's air mix control motor to HOT | With ignition switch ON (II), or vehicle in ON mode, and motor moving to HOT: battery voltage |
| 11 | LT BLU | M-COOL (Dr) | Drives driver's air mix control motor to COOL | With ignition switch ON (II), or vehicle in ON mode, and motor moving to COOL: battery voltage |
| 12 | PNK | M-HOT (Dr) | Drives driver's air mix control motor to HOT | With ignition switch ON (II), or vehicle in ON mode, and motor moving to HOT: battery voltage |
| 15 | LT GRN | IG2 | IG2 power supply | With ignition switch ON (II), or vehicle in ON mode: battery voltage |
| 17 | GRN | MODE 1 (Ps) | Passenger's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 18 | BRN | MODE 2 (Ps) | Passenger's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 19 | BLU | MODE 3 (Ps) | Passenger's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 20 | LT GRN | MODE 4 (Ps) | Passenger's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 21 | LT GRN | MODE 1 (Dr) | Driver's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 22 | BRN | MODE 2 (Dr) | Driver's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 23 | YEL | MODE 3 (Dr) | Driver's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 24 | BLU | MODE 4 (Dr) | Driver's mode control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) |
| 25 | GRY | AMD-P (Dr) | Driver's air mix control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: between 1.0 V and 4.0 V (depending on motor position) |
| 26 | YEL | AMD-P (Ps) | Passenger's air mix control motor position feedback | With ignition switch ON (II), or vehicle in ON mode: between 1.0 V and 4.0 V (depending on motor position) |
| 27 | BLU | BLW-V | Feedback of power transistor drain voltage | With ignition switch ON (II), or vehicle in ON mode, and fan switch OFF: about 8 V. Voltage decreases as fan speed increases |
| 28 | YEL | BLW-G | Outputs power transistor gate voltage | With ignition switch ON (II), or vehicle in ON mode, and fan switch at MIN: about 2 V. Voltage increases to about 10 V with fan switch at MAX |
| 30 | GRY | ILL + | Power source for illumination | With combination light switch ON: battery voltage |
CONNECTOR B
| Cavity | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | RED | RrDEF LED | Switches rear window defogger/mirror defogger button LED ON/OFF | - - |
| 2 | PNK | DEF LED | Switches defroster button LED ON/OFF | - - |
| 3 | LT BLU | PS IND PWM | Inputs indicator LED PWM (Pulse Width Modulation) control signal | - |
| 5 | PUR | PS IN1 | Inputs AUTO button signal | - - |
| 6 | WHT | PS IN 2 | Inputs passenger's temperature UP button signal | - - |
| 7 | YEL | PS IN 3 | Inputs passenger's temperature DOWN button signal | - - |
| 8 | BRN | PS IN 4 | Inputs passenger's MODE button signal | - - |
| 9 | GRN | PS IN 5 | Inputs rear window defogger/mirror defogger button signal | - - |
| 10 | GRY | PS IN 6 | Inputs air conditioning button signal | - - |
| 11 | BLU | PS IN 7 | Inputs recirculation button signal | - - |
| 12 | LT GRN | PS IN 8 | Inputs defroster button signal | - - |
| 13 | PUR | SYNC LED | Switches SYNC button LED ON/OFF | - - |
| 14 | ORN | R/F LED | Switches recirculation button LED ON/OFF | - - |
| 15 | WHT | DR IND PWM | Inputs indicator LED PWM (Pulse Width Modulation) control signal | - - |
| 17 | BRN | DR IN 1 | Inputs AUTO button signal | - - |
| 18 | GRN | DR IN 2 | Inputs driver's temperature UP button signal | - - |
| 19 | GRY | DR IN 3 | Inputs driver's temperature DOWN button signal | - - |
| 20 | BLU | DR IN 4 | Inputs driver's MODE button signal | - - |
| 21 | LT GRN | DR IN 5 | Inputs SYNC button signal | - - |
| 22 | ORN | DR IN 6 | Inputs FAN UP button signal | - - |
| 23 | PNK | DR IN 7 | Inputs FAN DOWN button signal | - - |
| 24 | RED | DR IN 8 | Inputs ON/OFF button signal | - - |
CONNECTOR C
| Cavity | Wire color | Terminal name | Description | Signal | ||
|---|---|---|---|---|---|---|
| 1 | RED | SENS-COM | Ground for sensors | Less than 0.2 V at all times | ||
| 2 | BRN | S5V | Power source for sensors | With ignition switch ON (II), or vehicle in ON mode: about 5 V | ||
| 4(1) | ORN | NAVI SI | Outputs NAVI communication data from audio-navigation unit | With ignition switch ON (II), or vehicle in ON mode: pulses | ||
| 5(1) | PUR | NAVI SO | Inputs NAVI communication data from audio-navigation unit | With ignition switch ON (II), or vehicle in ON mode: pulses | ||
| 6(1) | BRN | NAVI CLK | Inputs clock signal from audio-navigation unit | With ignition switch ON (II), or vehicle in ON mode: pulses | ||
| 7 | BLU | B-CAN L | B-CAN communication line | With ignition switch ON (II), or vehicle in ON mode: pulses | ||
| 8 | PNK | B-CAN H | B-CAN communication line | With ignition switch ON (II), or vehicle in ON mode: pulses | ||
| 9 | PUR | M-FRS | Drives recirculation control motor to FRESH | With ignition switch ON (II), or vehicle in ON mode, and motor moving to FRESH: battery voltage | ||
| 10 | ORN | M-REC | Drives recirculation control motor to RECIRCULATE | With ignition switch ON (II), or vehicle in ON mode, and motor moving to RECIRCULATE: battery voltage | ||
| 11 | YEL | Pd | A/C pressure sensor signal | With engine running and A/C compressor clutch engaged: about 0.7-4.5 V (depending on A/C pressure) | ||
| 12 | YEL | Hum | Inputs humidity sensor signal | With ignition switch ON (II), or vehicle in ON mode: about 1.0-4.0 V (depending on humidity) | ||
| 14 | PUR | Tsun | Inputs sunlight sensor signal | With ignition switch ON (II), or vehicle in ON mode, and vehicle in direct sunlight: Less than 3.56 V. Voltage rises above 3.56 V when vehicle is out of direct sunlight | ||
| 15 | LT BLU | Tr | Inputs in-car sensor signal | With ignition switch ON (II), or vehicle in ON mode: about 1.0-4.0 V (depending on in-car temperature) | ||
| 16 | BRN | Teva | Inputs evaporator temperature sensor signal | With ignition switch ON (II), or vehicle in ON mode: about 1.0-4.0 V (depending on evaporator temperature) | ||
| 17 | WHT | Tarn | Inputs outside air temperature sensor signal | With ignition switch ON (II), or vehicle in ON mode: about 1.0-4.0 V (depending on ambient temperature) | ||
| 18 | GRN | MODE 1 | Recirculation control motor position feedback 1 signal | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) | ||
| 19 | BLU | MODE 2 | Recirculation control motor position feedback 2 signal | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) | ||
| 20 | ORN | MODE 3 | Recirculation control motor position feedback 3 signal | With ignition switch ON (II), or vehicle in ON mode: about 0 V or about 5 V (depending on motor position) | ||
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