What would cause the A/C switch indicator light to keep flashing on and off?

Asked by Dec 07, 2015 at 11:28 AM about the 2007 Toyota Tacoma Access Cab V6 4WD

Question type: Maintenance & Repair

2007 Toyota Tacoma 4x4 access cab
V6

1 Answer

25,805

Your AC's magnetic clutch relay could be bad, in the under hood fuse box it is labeled MG CLT (2nd from right, middle). In Toyota nomenclature it is part 90987-02028, a SPST 12-volt relay, you can test if this is the fault by temporarily swapping it with one of the other relays, such as the TOW or AF HEATER relays. The other problems that can cause the flashing AC indicator are the AC amplifier assembly or the compressor itself, but I'd swap the relay first.

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