A/C button light blinking

User Is Offline
User Is Offline

insightbrewery

short-throw dipstick
Super Moderator
Joined
Aug 30, 2019
Messages
354
Reaction score
70
Points
28
 
First of all, my A/C works perfectly. But I left Hayward to go to Cupertino today (street traffic, then mostly two highways, then a bit of street traffic again) and each time I engaged my A/C the button light was blinking. Clutch engaged properly, no weird noises, blowing cold, fan comes on.

What should I check? Thanks as usual.
 
User Is Offline
User Is Offline

71Corolla

Site Founder
Super Moderator
Administrator
Joined
Aug 29, 2019
Messages
426
Reaction score
95
Points
28
 
If you have the fancy pants HVAC controls hold down the AUTO and RECIRC buttons at the same time and turn the key to ON. That is supposed to reveal any trouble codes.
 
User Is Offline
User Is Offline

insightbrewery

short-throw dipstick
Super Moderator
Joined
Aug 30, 2019
Messages
354
Reaction score
70
Points
28
 
Curses, this is only an LE with the regular control panel. I was under the impression that blinking A/C light was any number of problems (pressure issue, clutch issue) but most of what I'm reading says it means there's a speed mismatch.
 
User Is Offline
User Is Offline

71Corolla

Site Founder
Super Moderator
Administrator
Joined
Aug 29, 2019
Messages
426
Reaction score
95
Points
28
 
Only time I've seen the A/C light flash is when the compressor wasn't engaging properly (bad clutch) so basically what you are saying, speed mismatch. But if you have good cooling then maybe the speed sensor is flaking out.
 
User Is Offline
User Is Offline

insightbrewery

short-throw dipstick
Super Moderator
Joined
Aug 30, 2019
Messages
354
Reaction score
70
Points
28
 
Hm, where would the speed sensor be? Clutch has only one wire, and the only sensor I see in the compressor exploded diagram seems to be a pressure sensor.
 
User Is Offline
User Is Offline

71Corolla

Site Founder
Super Moderator
Administrator
Joined
Aug 29, 2019
Messages
426
Reaction score
95
Points
28
 
There is usually 3 wires. Which car are we talking about exactly?
 
User Is Offline
User Is Offline

insightbrewery

short-throw dipstick
Super Moderator
Joined
Aug 30, 2019
Messages
354
Reaction score
70
Points
28
 
'00 Camry 5S-FE auto "beatercam". I'll wait until I see the blinky again, and do a visual check. Will check wires this weekend
 
User Is Offline
User Is Offline

71Corolla

Site Founder
Super Moderator
Administrator
Joined
Aug 29, 2019
Messages
426
Reaction score
95
Points
28
 
How many wires go into the upward facing connector?

 
Top