Honda CR-V owner's & service manuals
 Download
Table of Contents > Climate Control Unit Connector for Inputs and Outputs

Honda CR-V Heating, Ventilation & Air Conditioning Troubleshooting ➜ Climate Control Unit Connector for Inputs and Outputs

B1229 An open in the sunlight sensor circuit  
B1230 A short in the sunlight sensor circuit  
unit  
Signal error  
Signal error  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
Climate control  
unit  
B1231 An open in the evaporator temperature sensor circuit  
B1232 A short in the evaporator temperature sensor circuit  
B1233 An open in the air mix control motor circuit (driver's)  
B1234 A short in the air mix control motor circuit (driver's)  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
Signal error  
A problem in the air mix control motor circuit, linkage,  
door, or motor (driver's)  
B1235  
B1236 An open in the passenger's air mix control motor circuit  
B1237 A short in the passenger's air mix control motor circuit  
A problem in the passenger's air mix control motor circuit, Climate control  
B1238  
B1240  
linkage, door, or motor  
unit  
A problem in the mode control motor circuit, linkage, door, Climate control  
or motor  
unit  
Climate control  
unit  
B1241 A problem in the blower motor circuit  
Climate control unit lost communication with MICU  
(WIPSW message)  
Climate control Loss of  
B2969  
unit  
communication  
A problem in the recirculation control motor circuit,  
linkage, door, or motor  
Climate control  
unit  
Climate control  
unit  
B2983  
Signal error  
Signal error  
B2986 An open in the recirculation control motor circuit  
CLIMATE CONTROL UNIT CONNECTOR FOR INPUTS AND OUTPUTS  
CLIMATE CONTROL UNIT INPUTS AND OUTPUTS  
Fig. 93: Climate Control Unit 32P Connector Terminal Layout  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Wire  
color  
Cavity  
Terminal name  
GND  
Description  
Signal  
Less than 0.2 V at all times  
---  
Ground for climate control  
unit (G502)  
1
2
BRN  
Not  
used  
Not used  
---  
With ignition switch ON (II), sunlight  
sensor out of direct sunlight: 3.56 V or  
more  
With ignition switch ON (II), sunlight  
sensor in direct sunlight: less than 3.56  
V
Detects sunlight sensor  
signal  
3
PUR  
TSUN  
Humidity sensor  
communication signal  
In-car temperature sensor  
communication signal  
4
5
ORN  
RED  
HUM_DATA  
HUM_CLK  
With ignition switch ON (II): pulses  
With ignition switch ON (II): pulses  
With ignition switch ON (II): about  
0.5-4.5 V (depending on recirculation  
control motor position)  
Detects potentiometer signal  
of recirculation control motor  
6
PNK  
RFD-P  
With ignition switch ON (II), and fan  
control dial OFF: less than 0.2 V  
Outputs power transistor gate With ignition switch ON (II), and fan  
7
GRN  
BLOWER_G  
voltage  
control dial ON: about 4.0 V-battery  
voltage (depending on blower motor  
control)  
With ignition switch ON (II): about 0  
V-battery voltage (depending on  
blower motor speed)  
With combination light switch ON:  
battery voltage  
With ignition switch ON (II), and  
mode control motor moving to DEF:  
battery voltage  
Feedback signal of power  
transistor drain voltage  
8
9
RED  
GRY  
YEL  
BLOWER_V  
ILLUMI+  
M-DEF  
Power source for  
illumination  
Outputs to drive mode  
control motor to DEF side  
10  
With ignition switch ON (II), and  
mode control motor moving to VENT:  
battery voltage  
With ignition switch ON (II): battery  
voltage  
Outputs to drive mode  
control motor to VENT side  
11  
12  
13  
PUR  
PNK  
M-VENT  
IG2_A/C  
IG2 power source  
Output to drive driver's air With ignition switch ON (II), driver's  
mix control motor to HOT air mix control motor moving to HOT:  
LT  
BLU  
M-HOT_DR  
M-COOL_DR  
side  
battery voltage  
Output to drive driver's air With ignition switch ON (II), driver's  
mix control motor to COOL air mix control motor moving to  
14 GRN  
side  
COOL: battery voltage  
B_CAN-L communication  
signal  
B_CAN-H communication  
signal  
15  
16  
17  
BLU  
PNK  
B_CAN-L  
B_CAN-H  
With ignition switch ON (II): pulses  
With ignition switch ON (II): pulses  
LT  
BLU  
With ignition switch ON (II): about  
5.0 V  
SENSOR_5V  
Outputs sensor 5 V  
With ignition switch ON (II): about  
1.0-4.0 V (depending on evaporator  
temperature)  
With ignition switch ON (II): about  
1.0-4.0 V (depending on outside air  
temperature)  
Detects evaporator  
temperature sensor signal  
18 ORN  
TEVA  
TAM  
Detects outside air  
temperature sensor signal  
19  
20  
21  
PNK  
Detects potentiometer signal With ignition switch ON (II): about  
LT  
GRN  
AMD_P_DR  
AMD_P_AS  
MODE-P  
of driver's air mix control  
motor  
0.5-4.0 V (depending on driver's air  
mix control motor position)  
Detects potentiometer signal With ignition switch ON (II): about  
of passenger's air mix control 0.5-4.0 V (depending on passenger's  
BRN  
motor  
air mix control motor position)  
With ignition switch ON (II): about  
0.5-4.5 V (depending on mode control  
motor position)  
Detects potentiometer signal  
of mode control motor  
22 WHT  
23 GRY SENSOR_COM Sensor ground  
Less than 0.2 V at all times  
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  
LT  
24  
25  
ACS  
Outputs A/C on/off signal  
GRN  
BRN  
Ground for climate control  
unit (G502)  
GND  
Less than 0.2 V at all times  
With combination light switch ON:  
changed voltage (depending on  
dashlights brightness controller)  
Detects illumination control  
signal  
26 GRN  
ILL- (LED)  
With ignition switch ON (II), and  
recirculation control motor moving to  
FRESH: battery voltage  
Output to drive recirculation  
control motor to FRESH side  
27  
BLU F/R_MTR (FRESH)  
Output to drive recirculation With ignition switch ON (II), and  
28  
BLK F/R_MTR (REC) control motor to  
RECIRCULATE side  
recirculation control motor moving to  
RECIRCU: battery voltage  
Output to drive passenger's With ignition switch ON (II),  
29 WHT  
M-HOT_AS  
air mix control motor to  
HOT side  
passenger's air mix control motor  
moving to HOT: battery voltage  
Output to drive passenger's With ignition switch ON (II),  
air mix control motor to passenger's air mix control motor  
30  
PUR  
M-COOL_AS  
COOL side  
---  
moving to COOL: battery voltage  
---  
Not  
used  
31  
32  
Not used  
With ignition switch ON (II), and rear  
window defogger switch ON: about 0  
V
With ignition switch ON (II), and rear  
window defogger switch OFF: battery  
voltage  
Signal for rear window  
defogger relay  
RED RR_DEF_RLY_CL-  
CLIMATE CONTROL UNIT POWER AND GROUND CIRCUIT  
TROUBLESHOOTING  
Fig. 94: Climate Control Unit Power And Ground Circuit Troubleshooting Flow Chart  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
NOTE:  
Do this troubleshooting procedure only if sent here by symptom  
troubleshooting.  
1. Fuse check:  
1. Check the following fuse.  
ο‚‘
Fuse No. B22 (7.5 A)  
reload full screen
2024 Honda CR-V Owner's Manual 2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual 2023 Honda CR-V Owner's Manual
2022 Honda CR-V Owner's Manual 2022 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual 2021 Honda CR-V Owner's Manual
2020 Honda CR-V Owner's Manual 2020 Honda CR-V Owner's Manual
2019 Honda CR-V Owner's Manual 2019 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual 2018 Honda CR-V Owner's Manual
2017 Honda CR-V Owner's Manual 2017 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual 2015 Honda CR-V Owner's Manual

We also have owner's manuals for other vehicle years:

Need help?

If after viewing the owner's manual or service manual you still have some unresolved questions about the car Honda CR-V you can write to us using the link below, describing your problem in detail, we try to answer all questions.


Ask your question on the page - Support!

2024 Honda CR-V Owner's Manual2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual2023 Honda CR-V Owner's Manual
2022 Honda CR-V Owner's Manual2022 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual2021 Honda CR-V Owner's Manual
2020 Honda CR-V Owner's Manual2020 Honda CR-V Owner's Manual
2019 Honda CR-V Owner's Manual2019 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual2018 Honda CR-V Owner's Manual
2017 Honda CR-V Owner's Manual2017 Honda CR-V Owner's Manual


CRVmanuals.com

Honda CR-V Owner's Manuals - view online or download in PDF for free!

Useful links
Follow Us