A1 ←> Chassis ground | Ignition power supply | Ignition switch: ON | Battery voltage |
A2 | CAN-H (CAN communication line) | Measurement load (digital signal) | — |
A3 | CAN-L (CAN communication line) | Measurement load (digital signal) | — |
A4 ←> Chassis ground | Ground | Always | 0 V |
A5 ←> Chassis ground | Driver’s side seat heater temperature sensor*4 | Ignition switch: ON Varies depending on temperature at seat heater | 0 — 5 V |
A6 ←> Chassis ground | Mode door actuator position signal | Ignition switch: ON Mode door FACE position | 4 V |
Ignition switch: ON Mode door DEF position | 1 V |
A7 ←> Chassis ground | Mode servo drive signal (FACE) | When turning towards FACE side: A7 is 12 V, B18 is GND | While operating: 12 V While not operating: 0 V |
A8 ←> Chassis ground | Battery power supply | Always | Battery voltage |
A9 | — | — | — |
A10 | — | — | — |
A11 ←> Chassis ground | Air mix door actuator drive signal (HOT)*1 or air mix door actuator (driver’s seat) drive signal (HOT)*2 | Turning towards HOT side: A11 is 12 V, A21 is GND | While operating: 12 V While not operating: 0 V |
A12 ←> Chassis ground | Each potentiometer and sensor power supply | Ignition switch: ON | 5 V |
A13 | — | — | — |
A14 ←> Chassis ground | Passenger’s side seat heater temperature sensor*4 | Ignition switch: ON Varies depending on temperature at seat heater | 0 — 5 V |
A15 ←> Chassis ground | Rear vent actuator position signal*3 | Ignition switch: ON Air mix door: Maximum cool position | 1.8 V |
Ignition switch: ON Air mix door: Maximum hot position | 4.1 V |
A16 ←> Chassis ground | Air mix door actuator (passenger’s side) position signal*2 | Ignition switch: ON Air mix door: Maximum cool position | 4 V |
Ignition switch: ON Air mix door: Maximum hot position | 1 V |
A17 ←> Chassis ground | Air mix door position signal*1 or air mix door (driver’s side) position signal*2 | Ignition switch: ON Air mix door: Maximum cool position | 4 V |
Ignition switch: ON Air mix door: Maximum hot position | 1 V |
A18 ←> Chassis ground | Mode servo drive signal (DEF) | When turning towards DEF side: A18 is 12 V, A7 is GND | While operating: 12 V While not operating: 0 V |
A19 | — | — | — |
A20 ←> Chassis ground | ACC power supply | Ignition switch: ACC | Battery voltage |
A21 ←> Chassis ground | Air mix door actuator drive signal (COOL)*1 or air mix door actuator (driver’s side) drive signal (COOL)*2 | Turning towards COOL side: A21 is 12 V, A11 is GND | While operating: 12 V While not operating: 0 V |
A22 ←> Chassis ground | After-evaporator sensor signal | Ignition switch: ON Varies depending on temperature after the evaporator | 1 — 4.5 V |
A23 ←> Chassis ground | In-vehicle sensor signal | Ignition switch: ON | 25°C (77°F): Approx. 1.5 V 40°C (104°F): Approx. 1.0 V |
A24 ←> Chassis ground | Pressure sensor signal | Ignition switch: ON | 0.5 — 4.9 V |
A25 ←> Chassis ground | Sunload sensor signal | Ignition switch: ON (0 V: No sunload) | 0 — 4.9 V |
A26 ←> Chassis ground | Flow sensor signal | Ignition switch: ON | 0.3 — 4.7 V |
B1 ←> Chassis ground | Driver’s side seat heater control *4 | Ignition switch: ON Seat heater switch: ON | 0 V or battery voltage |
B2 ←> Chassis ground | Seat heater (driver’s side) GND *4 | Always | Less than 0.5 V |
B3 ←> Chassis ground | Passenger’s side seat heater control *4 | Ignition switch: ON Seat heater switch: ON | 0 V or battery voltage |
B4 ←> Chassis ground | Seat heater (passenger’s side) GND *4 | Always | Less than 0.5 V |
B5 ←> Chassis ground | Blower motor voltage feedback*2 | Ignition switch: ON Blower switch: ON | 0.45 — 10 V |
B6 ←> Chassis ground | Blower motor control signal*2 | Ignition switch: ON Blower switch: ON | 9.05 V |
B7 ←> Chassis ground | Intake door actuator drive signal (RECIRC) | Intake door actuator operating on the RECIRC side | 0.7 V or less |
B8 ←> Chassis ground | Variable compressor solenoid valve | Ignition switch: ON Blower switch: ON A/C switch: ON | 2 — 12 V |
B9 | — | — | — |
B10 | — | — | — |
B11 | A/C control panel communication | Measurement load (digital signal) | — |
B12 | A/C control panel communication | Measurement load (digital signal) | — |
B13 ←> Chassis ground | Heater main relay drive signal*2 | Ignition switch: ON Blower switch: ON | 0.7 V or less |
B14 | — | — | — |
B15 ←> Chassis ground | Air mix door actuator (passenger’s side) drive signal (HOT)*2 | Turning towards HOT side: B14 is 12 V, B15 is GND | While operating: 12 V While not operating: 0 V |
B16 ←> Chassis ground | Air mix door actuator (passenger’s side) drive signal (COOL)*2 | Turning towards COOL side: B15 is 12 V, B14 is GND | While operating: 12 V While not operating: 0 V |
B17 ←> Chassis ground | Intake door actuator drive signal (FRESH) | Intake door actuator operating on the FRESH side | 0.7 V or less |
B18 ←> Chassis ground | Sensor GND | Always | Less than 0.5 V |
B19 | — | — | — |
B20 | — | — | — |
B21 | — | — | — |
B22 | — | — | — |
B23 ←> Chassis ground | Rear vent actuator drive signal (HOT)*3 | Turning towards HOT side: B22 is 12 V, B23 is GND | While operating: 12 V While not operating: 0 V |
B24 ←> Chassis ground | Rear vent actuator drive signal (COOL)*3 | Turning towards COOL side: B23 is 12 V, B22 is GND | While operating: 12 V While not operating: 0 V |
Wiring diagram
