AC relay location

Tiny
SAILINGKENNY
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I have intermittent AC operation. I've checked the pressures which seem fine, flushed & cleaned condenser coils and swapped AC and heater relays but unit still works intermittently. Is there a clutch relay somewhere?
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Tuesday, April 26th, 2011 AT 5:47 PM

6 Replies

Tiny
WRENCHER1
  • MEMBER
Here is the location of the relay. Don't overlook that is could be just a weak compressor clutch also. Here is a guide to help test it with the location of the relay in the diagrams below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, April 26th, 2011 AT 6:18 PM
Tiny
KOHLLINK
  • MEMBER
  • 1999 TOYOTA SIENNA
Where is the a/c mag clutch relay located on a 1999 toyota sienna le. The relay fuse box under the hood next to the battery doesn't show it on diagram
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Monday, July 8th, 2019 AT 3:56 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
AC amplifer controls clutch no relay
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Monday, July 8th, 2019 AT 3:56 PM (Merged)
Tiny
2CEXPT
  • EXPERT
Its the AC Amplifier that powers the magnetic clutch
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Monday, July 8th, 2019 AT 3:56 PM (Merged)
Tiny
KOHLLINK
  • MEMBER
A/c compressor runs for a few seconds and then the a/c light starts flashing.I jumped the compressor 37 psi low and 170 high.A/c blows cold. What would cause the a/c light to flash? Bad sensor? A/c amplifier gone bad? Is there a low pressure sensor I can check?
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Monday, July 8th, 2019 AT 3:56 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Not pressure sensor when light blinks if belt not slipping then amplifier is likely
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Monday, July 8th, 2019 AT 3:56 PM (Merged)

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