Climate Control Unit Connector for Inputs and Outputs
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Honda Odyssey, 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, and 2021 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
| Connector Index |
|---|
| Climate Control Unit Connector A (32P) |
| Climate Control Unit Connector B (20P) |
| Climate Control Unit Connector C (12P) (With Seat Heater) |
Climate Control Unit Connector A (32P) (female terminals)
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 1 | B-CAN_H | B-CAN communication signal | With vehicle in ON mode: pulses |
| 2 | AMD-P DR | Detects potentiometer signal of air mix control motor (door position) | With vehicle in ON mode: about 0.5-4.5 V (depending on air mix control motor position) |
| 3 | IDEF AMD-P | Detects potentiometer signal of mode control motor B (door position) | With vehicle in ON mode: about 0.5-2.9 V (depending on mode control motor B position) |
| 4 | MDD-P | Detects potentiometer signal of mode control motor A (door position) | With vehicle in ON mode: about 1.0-4.0 V (depending on mode control motor A position) |
| 5 *1 | TSUN | Detects sunlight sensor signal | With vehicle in ON mode, and no sunlight or the sensor covered up: 3.56 V With vehicle in ON mode, and sunlight on the sensor: less than 3.56 V |
| 6 | TAM | Detects outside air temperature sensor signal | With vehicle in ON mode: about 1.0-4.0 V (depending on outside air temperature) |
| 7 | TEVA | Detects front evaporator temperature sensor signal | With vehicle in ON mode: about 1.0-4.0 V (depending on front evaporator temperature) |
| 8 | TR RR | Detects rear evaporator temperature sensor signal | With vehicle in ON mode: about 1.0-4.0 V (depending on rear evaporator temperature) |
| 9 | TR | In-car temperature sensor signal | With vehicle in ON mode: about 1.0-4.0 V (depending on in-car temperature) |
| 10 | Not used | ---- | ---- |
| 11 | HUM CLK | Humidity sensor signal | With vehicle in ON mode: about 0.8-4.0 V (depending on humidity) |
| 12 | S 5V | Outputs sensor 5 V | With vehicle in ON mode: about 5.0 V |
| 13 | SENSOR COM | Sensor ground | With vehicle in ON mode: less than 0.2 V |
| 14 | ILL-(LED) | Detects illumination control signal | With combination light switch ON: changed voltage (depending on dashlights brightness controller) |
| 15 | GND | Ground for climate control unit (G406) | With vehicle in ON mode: less than 0.2 V |
| 16 | SOL OUT | Outputs 12 V to A/C compressor variable capacity control solenoid | Variable voltage based on cooling load. With A/C compressor at maximum: battery voltage |
| 17 | B-CAN_L | B-CAN communication signal | With vehicle in ON mode: pulses |
*1: With automatic wiper or without automatic lighting
*2: With auto idle stop system
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 18 | RFD-P | Detects potentiometer signal of recirculation control motor (door position) | With vehicle in ON mode: about 0.5-3.5 V (depending on recirculation control motor position) |
| 19 | M-COOL DR | Outputs to drive air mix control motor to COOL side | With vehicle in ON mode and air mix control motor moving to COOL: battery voltage |
| 20 | M-HOT DR | Outputs to drive air mix control motor to HOT side | With vehicle in ON mode and air mix control motor moving to HOT: battery voltage |
| 21 | IDEF M-HOT | Outputs to drive mode control motor B to VENT side | With vehicle in ON mode and mode control motor B moving to VENT: battery voltage |
| 22 | IDEF M-COOL | Outputs to drive mode control motor B to DEF side | With vehicle in ON mode and mode control motor B moving to DEF: battery voltage |
| 23 | MODE MTR VENT | Outputs to drive mode control motor A to HEAT side | With vehicle in ON mode and mode control motor A moving to HEAT: battery voltage |
| 24 | MODE MTR DEF | Outputs to drive mode control motor A to VENT side | With vehicle in ON mode and mode control motor A moving to VENT: battery voltage |
| 25 | F/R MTR(FRESH) | Outputs to drive recirculation control motor to FRESH side | With vehicle in ON mode and recirculation control motor moving to FRESH: battery voltage |
| 26 | F/R MTR(REC) | Outputs to drive recirculation control motor to RECIRCULATE side | With vehicle in ON mode and recirculation control motor moving to RECIRCULATE: battery voltage |
| 27 | IG2 | IG2 power source | With vehicle in ON mode: battery voltage |
| 28 *2 | IG1 MICU(DC/DC) | IG1 power source | With vehicle in ON mode: battery voltage |
| 29 | ILLUMI+ | Inputs voltage for illumination | With combination light switch ON: battery voltage |
| 30 | BLOWER V | Feedback signal of front power transistor drain voltage | With vehicle in ON mode: about 0 V-battery voltage (depending on front blower motor speed) |
| 31 | BLOWER G | Outputs front power transistor gate voltage | With vehicle in ON mode and fan control switch OFF: less than 0.2 V With vehicle in ON mode and fan control switch ON: about 4.0 V-battery voltage (depending on front blower motor control) |
| 32 | SOL IN | Ground for A/C compressor variable capacity control solenoid | With vehicle in ON mode: less than 0.2 V |
*1: With automatic wiper or without automatic lighting
*2: With auto idle stop system
Climate Control Unit Connector B (20P) (female terminals)
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 1 *1 | BUS-DATA | BUS-DATA communication signal | ---- |
| 2 | Not used | ---- | ---- |
| 3 | Not used | ---- | ---- |
| 4 | Not used | ---- | ---- |
| 5 | RR BLOWER V | Feedback signal of rear power transistor drain voltage | With vehicle in ON mode: about 0 V-battery voltage (depending on rear blower motor speed) |
| 6 | RR BLOWER G | Outputs rear power transistor gate voltage | With vehicle in ON mode and fan control switch OFF: less than 0.2 V With vehicle in ON mode and fan control switch ON: about 4.0 V-battery voltage (depending on rear blower motor control) |
| 7 | Not used | ---- | ---- |
*1: With front dual zone climate control
*2: With seat heater
*3: Without ventilated seat
*4: With ventilated seat
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 8 | AMD-P RR | Detects potentiometer signal of rear air mix control motor (door position) | With vehicle in ON mode: about 1.0-4.0 V (depending on air mix control motor position) |
| 9 | RR MODE1 | Detects potentiometer signal of rear mode control motor (door position) | With vehicle in ON mode: about 1.0-3.5 V (depending on rear mode control motor position) |
| 10 *1 | AMD-P AS | Detects potentiometer signal of passenger's air mix control motor (door position) | With vehicle in ON mode: about 0.5-4.5 V (depending on passenger's air mix control motor position) |
| 11 *2 | HEAT IND SW DR | Detects driver's seat heater switch *3 or driver's ventilated seat switch *4 ON/OFF signal | ---- |
| 12 *4 | FAN IND SW DR | Detects driver's ventilated seat switch ON/OFF signal | ---- |
| 13 *2 | HEAT IND SW AS | Detects front passenger's seat heater switch *3 or front passenger's ventilated seat switch *4 ON/OFF signal | ---- |
| 14 *4 | FAN IND SW AS | Detects front passenger's ventilated seat switch ON/OFF signal | ---- |
| 15 | M-COOL RR | Outputs to drive rear air mix control motor to COOL side | With vehicle in ON mode and rear air mix control motor moving to COOL: battery voltage |
| 16 | M-HOT RR | Outputs to drive rear air mix control motor to HOT side | With vehicle in ON mode and rear air mix control motor moving to HOT: battery voltage |
| 17 | RR MODE MTR VENT | Outputs to drive rear mode control motor to VENT side | With vehicle in ON mode and rear mode control motor moving to VENT: battery voltage |
| 18 | RR MODE MTR DEF | Outputs to drive rear mode control motor to DEF side | With vehicle in ON mode and rear mode control motor moving to DEF: battery voltage |
| 19 *1 | M-COOL AS | Outputs to drive passenger's air mix control motor to COOL side | With vehicle in ON mode and passenger's air mix control motor moving to COOL: battery voltage |
| 20 *1 | M-HOT AS | Outputs to drive passenger's air mix control motor to HOT side | With vehicle in ON mode and passenger's air mix control motor moving to HOT: battery voltage |
*1: With front dual zone climate control
*2: With seat heater
*3: Without ventilated seat
*4: With ventilated seat
Climate Control Unit Connector C (12P) (With Seat Heater) (female terminals)
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 1 | HEAT IND HI DR | Outputs to driver's seat heater switch *1 or driver's ventilated seat switch *2 H indicator | ---- |
| 2 | HEAT IND MID DR | Outputs to driver's seat heater switch *1 or driver's ventilated seat switch *2 M indicator | ---- |
| 3 | HEAT IND LO DR | Outputs to driver's seat heater switch *1 or driver's ventilated seat switch *2 L indicator | ---- |
| 4 *2 | FAN IND HI DR | Outputs to driver's ventilated seat switch H indicator | ---- |
| 5 *2 | FAN IND MID DR | Outputs to driver's ventilated seat switch M indicator | ---- |
| 6 *2 | FAN IND LO DR | Outputs to driver's ventilated seat switch L indicator | ---- |
| 7 | HEAT IND HI AS | Outputs to front passenger's seat heater switch *1 or front passenger's ventilated seat switch *2 H indicator | ---- |
*1: Without ventilated seat
*2: With ventilated seat
| Cavity | Terminal name | Description | Signal |
|---|---|---|---|
| 8 | HEAT IND MID AS | Outputs to front passenger's seat heater switch *1 or front passenger's ventilated seat switch *2 M indicator | ---- |
| 9 | HEAT IND LO AS | Outputs to front passenger's seat heater switch *1 or front passenger's ventilated seat switch *2 L indicator | ---- |
| 10 *2 | FAN IND HI AS | Outputs to front passenger's ventilated seat switch H indicator | ---- |
| 11 *2 | FAN IND MID AS | Outputs to front passenger's ventilated seat switch M indicator | ---- |
| 12 *2 | FAN IND LO AS | Outputs to front passenger's ventilated seat switch L indicator | ---- |
*1: Without ventilated seatt
*2: With ventilated sea