The 2010 Honda CRV air conditioning system is a crucial component for a comfortable driving experience in hot weather. It is essential to understand the AC wiring diagram to ensure proper functioning of the system. This article will provide a comprehensive guide to the 2010 Honda CRV AC wiring diagram. We will cover the different components of the system, their functions, and how to troubleshoot common AC problems.
Components of the AC System
The 2010 Honda CRV air conditioning system comprises several components that work together to provide cool air in the cabin. These components include:
| Component | Function |
|---|---|
| Compressor | Pressurizes and circulates refrigerant in the system |
| Condenser | Removes heat from the refrigerant |
| Expansion valve | Regulates refrigerant flow into the evaporator |
| Evaporator | Extracts heat from the cabin air |
| Receiver/dryer | Filters and dries the refrigerant |
| High pressure switch | Protects the compressor from damage due to high pressure in the system |
| Low pressure switch | Protects the compressor from damage due to low pressure in the system |
| Blower motor | Regulates the airflow into the cabin |
AC Wiring Diagram
The AC wiring diagram for the 2010 Honda CRV is divided into two parts: the underhood fuse/relay box and the interior fuse box. The underhood fuse/relay box contains the AC compressor relay, while the interior fuse box contains the blower motor relay, blower motor resistor, and AC pressure switch.
Underhood Fuse/Relay Box
The AC compressor relay is located in the underhood fuse/relay box. The relay is responsible for supplying power to the AC compressor clutch. The wiring diagram for the AC compressor relay is as follows:
Pin 1 (white/yellow wire): Battery power from the fuse 56 (20A) in the underhood fuse/relay box
Pin 2 (black/yellow wire): Ground
Pin 3 (blue wire): Control signal from the PCM
Pin 4 (green/yellow wire): Signal to the AC compressor clutch
Interior Fuse Box
The interior fuse box contains the blower motor relay, blower motor resistor, and AC pressure switch. The wiring diagram for these components is as follows:
Blower motor relay:
Pin 1 (blue wire): Control signal from the HVAC control unit
Pin 2 (black/yellow wire): Ground
Pin 3 (yellow/green wire): Battery power from fuse 4 (7.5A) in the interior fuse box
Pin 4 (green wire): Power to the blower motor
Blower motor resistor:
Pin 1 (green wire): Power from the blower motor relay
Pin 2 (white wire): Ground
Pin 3 (light green wire): Low speed output to the blower motor
Pin 4 (dark blue wire): Medium speed output to the blower motor
Pin 5 (yellow wire): High speed output to the blower motor
AC pressure switch:
Pin 1 (green/red wire): Battery power from fuse 11 (10A) in the interior fuse box
Pin 2 (light green wire): Signal to the PCM
Pin 3 (black/yellow wire): Ground
Common AC Problems and Troubleshooting
Some common AC problems in the 2010 Honda CRV include:
- AC not blowing cold air
- AC blowing hot air
- Blower motor not working
- AC compressor not engaging
The following are some troubleshooting tips for these AC problems:
AC Not Blowing Cold Air
If the AC is not blowing cold air, it could be due to low refrigerant levels, a faulty compressor, or a clogged condenser. Check the refrigerant levels and if they are low, recharge the system. If the compressor or condenser is faulty, replace them.
AC Blowing Hot Air
If the AC is blowing hot air, it could be due to a faulty expansion valve or a clogged air filter. Check the expansion valve and replace it if it’s faulty. Also, check the air filter and replace it if it’s clogged.
Blower Motor Not Working
If the blower motor is not working, check the fuses and relays. Replace any faulty fuses or relays. If they are all fine, check the blower motor resistor and replace it if it’s faulty. If the resistor is fine, check the blower motor and replace it if it’s faulty.
AC Compressor Not Engaging
If the AC compressor is not engaging, check the fuses and relays. Replace any faulty fuses or relays. Also, check the AC pressure switch and replace it if it’s faulty. If all components are fine, the problem could be a faulty PCM or wiring issue.
Conclusion
The 2010 Honda CRV AC wiring diagram is an important guide to understanding the AC system in the vehicle. It is important to know the different components of the system, their functions, and how to troubleshoot common AC problems. With this knowledge, you can ensure proper functioning of the AC system and a comfortable driving experience in hot weather.
FAQ
- Where is the AC compressor relay located in the 2010 Honda CRV?
- What are some common AC problems in the 2010 Honda CRV?
- How do I troubleshoot a faulty AC compressor in the 2010 Honda CRV?
- How do I troubleshoot a faulty blower motor in the 2010 Honda CRV?
The AC compressor relay is located in the underhood fuse/relay box.
Some common AC problems in the 2010 Honda CRV include AC not blowing cold air, AC blowing hot air, blower motor not working, and AC compressor not engaging.
If the AC compressor is faulty, replace it with a new one.
If the blower motor is faulty, check the fuses and relays. Replace any faulty fuses or relays. If they are all fine, check the blower motor resistor and replace it if it’s faulty. If the resistor is fine, check the blower motor and replace it if it’s faulty.
