Rick's Free Auto Repair Advice

Posts Tagged: High Speed Fan

P1489 High Speed Fan CTRL Relay Circuit

P1489 High Speed Fan CTRL Relay Circuit If you have a P1489 High Speed Fan CTRL Relay Circuit trouble code, this post will help you understand what it is and how to fix it. The high speed on the radiator cooling fan is turned on and off by a relay. The PCM has detected a problem in the control portion of this relay. The control portion is the magnetic coil that moves the contacts to open of close–the contacts that feed power to the high speed side of the cooling fan. … Read More


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