A/C Condenser Fan Motor Relay High-Speed Control System Check

A/C Condenser Fan Motor Relay High-Speed Control System Check

Wiring Diagram:

Wiring Diagram

Circuit Description
A/C Condenser fan motor low-speed relay is turned ON by ECM when A/C signal is inputted to ECM and engine conditions are as specified.
A/C Condenser fan motor high-speed relays should be operated under the following conditions.
- When A/C condenser fan control switch (in refrigerant pressure switch) OFF signal inputted to ECM with A/C ON (A/C compressor in operation).
- When ECT is more than 115 degrees C, 239 degrees F.

Step 1 - 2:

Step 3 - 5:

Step 6 - 7:

Troubleshooting