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Climate Control Unit Inputs and Outputs

Fig 1: Identifying Climate Control Unit 36P Connector Terminals
G08094291Courtesy of AMERICAN HONDA MOTOR CO., INC.
Cavity Wire color Terminal name Description Signal
1 LT GRN S-COM Sensor ground Less than 0.2 V at all times
3 GRN S5V Outputs sensor 5 V With ignition switch ON (II): about 5 V
5 RED AMD-P Detects potentiometer signal of air mix control motor With ignition switch ON (II): about 1.0-4.0 V (depending on air mix control motor position)
6 GRN B-CAN B-CAN communication signal With ignition switch ON (II): pulses
7 PUR Rr DEF RLY Input rear window defogger relay With defogger switch OFF: battery voltage With defogger switch ON: 0 V
8 LT BLU REC Output to drive recirculation control motor to RECIRCULATE side With ignition switch ON (II) and recirculation control motor in position FRESH: battery voltage
9 GRN FRS Output to drive recirculation control motor to FRESH side With ignition switch ON (II) and recirculation control motor in position RECIRCU: battery voltage
10 BRN M-DEF Outputs to drive mode control motor to DEF side With ignition switch ON (II) and mode control motor moving to DEF: battery voltage
11 RED M-VENT Outputs to drive mode control motor to VENT side With ignition switch ON (II) and mode control motor moving to VENT: battery voltage
12 PUR M-HOT Output to drive air mix control motor to HOT side With ignition switch ON (II) and air mix control motor moving to HOT: battery voltage
13 BLU M-COOL Output to drive air mix control motor to COOL side With ignition switch ON (II) and air mix control motor moving to COOL: battery voltage
14 BLK GND Ground for climate control unit (G502) Less than 0.2 V at all times
15 LT BLU BLW-V Feedback signal of power transistor drain voltage With ignition switch ON (II): about 0 V -battery voltage (depending on blower motor speed)
17 RED IG2 IG2 power source With ignition switch ON (II): battery voltage
18 GRY ILL+ Inputs voltage for illumination With combination light switch ON: battery voltage
19 PUR Tsun Detects sunlight sensor signal With ignition switch ON (II) and no sunlight or the sensor covered up: 3.56 V With ignition switch ON (II) and sunlight on the sensor: less than 3.56 V (depending on sunlight intensity)
20 LT BLU Tr Detects in-car temperature sensor signal With ignition switch ON (II): about 1.0-4.0 V (depending on in-car temperature)
22 PNK Tarn Detects outside air temperature sensor signal With ignition switch ON (II): about 1.0-4.0 V (depending on outside air temperature)
23 ORN Teva Detects evaporator temperature sensor signal With ignition switch ON (II): about 1.0-4.0 V (depending on evaporator temperature)
24 WHT Hum Detects humidity sensor signal With ignition switch ON (II): about 1.0-4.0 V (depending on humidity)
26 BLU ACS Outputs A/C on/off signal With ignition switch ON (II), normal A/C pressure, and A/C switch ON: less than 0.5 V With ignition switch ON (II), normal A/C pressure, and A/C switch OFF: battery voltage
27 PNK MODE 1 Mode control motor position feedback 1 signal With ignition switch ON (II): about 5 V (depending on motor position)
28 YEL MODE 2 Mode control motor position feedback 2 signal With ignition switch ON (II): about 5 V (depending on motor position)
29 WHT MODE 3 Mode control motor position feedback 3 signal With ignition switch ON (II): about 5 V (depending on motor position)
30 GRY MODE 4 Mode control motor position feedback 4 signal With ignition switch ON (II): about 5 V (depending on motor position)
31(1) WHT AC-SI Communication signal to audio-navigation unit With ignition switch ON (II): pulses
32(1) BRN AC-CLK Communication signal to audio-navigation unit With ignition switch ON (II): pulses
33(1) YEL AC-SO Communication signal to audio-navigation unit With ignition switch ON (II): pulses
34 ORN BLW-G Outputs power transistor gate voltage With ignition switch ON (II) and fan control button OFF: less than 0.5 V. With ignition switch ON (II) and fan control button ON: about 4.0 V - battery voltage (depending on blower motor control)
36 BLU ILL-(LED) Detects illumination control signal With illumination switch ON: changed voltage (depending on dashlights brightness controller)
(1) With navigation


Fig 1: Identifying Climate Control Unit 5P Connector Terminals
G08094292Courtesy of AMERICAN HONDA MOTOR CO., INC.
5P CONNECTOR

Cavity Wire color Terminal name Description Signal
3 BLK F-GND Ground for climate control unit (G502) Less than 0.2 V at all times
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