Compressor not coming on?

Tiny
BHAMDOC1973
  • MEMBER
  • 2006 TOYOTA MATRIX
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 134,000 MILES
Compressor not coming on. Fan comes on when turning ac knob on. Coolant is full. I can turn the compressor pulley by hand. How can I run the compressor for a sec to see if its ok. I see a small relay marked M/G clutch so I assume its fir it. I tried to find another relay similar to it to swap them and see but none are similar. Which pins should I connect with a clip to make the compressor come on? Checked 10 amp fuse under steering and its good. Checked power to the grey wire to the connector and there is power. I guess its a compressor issue
Wednesday, November 6th, 2024 AT 8:24 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,320 POSTS
Yes the M/G clutch relay is for the compressor clutch, you can jump terminals 5 and 3 or just take the relay cover off and work it by hand. Here is the AC system and Ac compressor wiring diagrams so you can see how the system works. Check out the images (below). Please let us know what happens.
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Wednesday, November 6th, 2024 AT 10:17 AM

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