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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Testing & Troubleshooting (Except Hybrid) >> Connector View >> Climate Control Unit Connector for Inputs and Outputs (2017 2018 2019)

Climate Control Unit Connector for Inputs and Outputs (2017 2018 2019)

Connector Index
Climate Control Unit Connector A (32P)
Climate Control Unit Connector B (24P)

CLIMATE CONTROL UNIT CONNECTOR A (32P) 

GHH428533Courtesy of HONDA, U.S.A., INC.
Cavity Terminal name Description Signal
1 Not used ---- ----
2 Not used ---- ----
3 Not used ---- ----
4 Not used ---- ----
5 Not used ---- ----
6 Not used ---- ----
7 Not used ---- ----
8 B-CAN_L B-CAN communication signal With vehicle in ON mode: pulses
9 Not used ---- ----
10 *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

11 TAM Detects outside air temperature sensor signal With vehicle in ON mode: about 0.2-4.8 V (depending on outside air temperature)
12 SENSOR COM Sensor ground With vehicle in ON mode: less than 0.2 V
13 Not used ---- ----
14 SOL IN 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
15 Not used ---- ----
16 Not used ---- ----
17 Not used ---- ----
18 Not used ---- ----
19 Not used ---- ----
20 Not used ---- ----
21 Not used ---- ----
22 Not used ---- ----
23 Not used ---- ----
24 Not used ---- ----
25 B-CAN_H B-CAN communication signal With vehicle in ON mode: pulses
26 Not used ---- ----

*1: With automatic wiper or without automatic lighting

Cavity Terminal name Description Signal
27 TR Detects in-car temperature sensor signal With vehicle in ON mode: about 0.2-4.8 V (depending on in-car temperature)
28 GND Ground for climate control unit (G402) With vehicle in ON mode: less than 0.2 V
29 BUS-DATA BUS-DATA communication signal ----
30 SOL OUT Ground for A/C compressor variable capacity control solenoid With vehicle in ON mode: less than 0.2 V
31 Not used ---- ----
32 IG2 A/C IG2 power source With vehicle in ON mode: battery voltage

*1: With automatic wiper or without automatic lighting

CLIMATE CONTROL UNIT CONNECTOR B (24P) 

GHH428534Courtesy of HONDA, U.S.A., INC.
Cavity Terminal name Description Signal
1 S5V Outputs sensor 5 V With vehicle in ON mode: about 5.0 V
2 AMD-P-DR Detects potentiometer signal of air mix control motor (door position) *1Detects potentiometer signal of driver's air mix control motor (door position) *2 With vehicle in ON mode: about 0.5-4.5 V (depending on air mix control motor position) *1With vehicle in ON mode: about 0.5-4.5 V (depending on driver's air mix control motor position) *2
3 *2 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)
4 RFD-P Detects potentiometer signal of recirculation control motor (door position) With vehicle in ON mode: about 0.5-4 V (depending on recirculation control motor position
5 MDD-P Detects potentiometer signal of mode control motor (door position) With vehicle in ON mode: about 0.5-4.5 V (depending on mode control motor position)
6 Not used ---- ----
7 Not used ---- ----
8 TEVA Detects evaporator temperature sensor signal With vehicle in ON mode: about 0.2-4.8 V (depending on evaporator temperature)
9 Not used ---- ----
10 SENS-COM Sensor ground With vehicle in ON mode: less than 0.2 V
11 BLW-G Outputs power transistor gate voltage With vehicle in ON mode and fan control icon or fan control dial OFF: less than 0.2 V

With vehicle in ON mode and fan control icon or fan control dial ON: about 4.0 V-battery voltage (depending on blower motor control)

12 BLW-V Feedback signal of power transistor drain voltage With vehicle in ON mode: about 0 V-battery voltage (depending on blower motor speed)

*1: Without dual zone control

*2: With dual zone control

Cavity Terminal name Description Signal
13 M-HOT-DR Output to drive air mix control motor to HOT side *1Output to drive driver's air mix control motor to HOT side *2 With vehicle in ON mode and air mix control motor moving to HOT: battery voltage *1With vehicle in ON mode and driver's air mix control motor moving to HOT: battery voltage *2
14 M-COOL-DR Output to drive air mix control motor to COOL side *1Output to drive driver's air mix control motor to COOL side *2 With vehicle in ON mode and air mix control motor moving to COOL: battery voltage *1With vehicle in ON mode and driver's air mix control motor moving to COOL: battery voltage *2
15 *2 M-HOT-AS Output 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
16 *2 M-COOL-AS Output 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
17 M-REC Output to drive recirculation control motor to RECIRCULATE side With vehicle in ON mode and recirculation control motor moving to RECIRCULATE: battery voltage
18 M-FRS Output to drive recirculation control motor to FRESH side With vehicle in ON mode and recirculation control motor moving to FRESH: battery voltage
19 M-VENT Outputs to drive mode control motor to VENT side With vehicle in ON mode and mode control motor moving to VENT: battery voltage
20 M-DEF Outputs to drive mode control motor to DEF side With vehicle in ON mode and mode control motor moving to DEF: battery voltage
21 Not used ---- ----
22 Not used ---- ----
23 Not used ---- ----
24 Not used ---- ----

*1: Without dual zone control*2: With dual zone control