A/C Compressor Control Relay Location?

Hello,

Here is a guide to help you test the fuses and relays (DIAGRAMS BELOW)

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

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

and

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Looks like you need #12

Under Hood Fuse/Relay Box Fuse
Fuse Number Fuse Name Amps Component or Circuit Protected
1 L H/L LO 10A Left Headlight (Low)
2 RR DEFROSTER COIL 30A Relay Control Module
3 L H/L HI 10A Left Headlight (High)
4 SMALL LIGHT 15A Taillight Relay
5 R H/L HI 10A Right Headlight (High)
6 R H/L LO 10A Right Headlight (Low)
7 BACK UP 7.5A Relay Control Module
8 FI ECU 15A PGM FI Main Relay, DLC
9 CONDENSER FAN 30A A/C Condenser Fan Relay
10 Not Used
11 COOLING FAN 30A Radiator Fan Relay
12 MG CLUTCH 7.5A A/C Compressor Clutch Relay
13 HORN, STOP 20A Brake Pedal Position Switch, Horn Relay, Ignition Key Switch/Key Light
14 RR DEFROSTER 30A Rear Window Defogger Relay
15 BACK UP, ACC 40A Fuse 7 in Under hood Fuse/Relay Box, Fuses 5, 6, 7, 8 and 9 in Driver's Fuse/Relay Box
16 HAZARD 15A Hazard Warning Switch, Turn Signal/Hazard Relay
17 VSA MOTOR 30A VSA Modulator Control Unit
18 VSA 30A VSA Modulator Control Unit
19 OPTION 1 30A Fuses 1, 2, 3 and 4 in Driver's Fuse/Relay Box
20 OPTION 2 40A Fuses 12, 13, 14, 15, 16 and 17 in Driver's Fuse/Relay Box
21 HEATER MOTOR 40A Blower Motor Relay
22 BATTERY 120A Battery, Power Distribution
+B AS F/B 70A Fuses 1, 2, 3, 4, 5, 8 and 9 in Passenger's Fuse/Relay Box
23 +B IG1 MAIN 50A Fuse 33 in Driver's Fuse/Relay Box, Ignition Switch
POWER WINDOW 40A (LX) Fuses 27 and 28 in Driver's Fuse/Relay Box, Power Window Relay
50A (EX, EX L, Touring)

Check out the diagrams (Below)

Please let us know what happens.

Cheers, Ken

There could be a leak in the AC system, have your mechanic put dye in the AC sysem and check for leaks.

Hi ehoerber,

Thanks for the donation.

Try turning on the control to the heater and then moving back to the AC.

If it does not help, the air-mix vent seals could be leaking or linkages stuck. You need to check the heater core vents.

Hi ehoerber,

Did you perform a sensor test on the driver air mix opening? There is also the Driver Vent Temperature Air Out sensor.

I believe these two items must be giving some error.

Cost can be anywhere. Need to find the source.

Sounds like it blew open a leak. Need to see if it will hold vacuum.

If the system is charged and the pressure is that high on the low side, it sounds like there is a blockage somewhere in the system. Try having it evacuated and recharged to see if that helps.

You stated the low side pressure, but what about the high side? Is it reading close to the same pressure? If so, your compressor may have failed internally. It may not be generating any pressure/suction causing you to have static readings.

Hi chrisishere,

Thank you for the donation.

Problem is most likely due to the air mix cable out of adjustment. Here are the procedures for adjusting.

AIR MIX CABLE
Remove clip and heater duct from heater unit. At air mix door linkage (bottom right side of heater case), disengage cable housing from clamp and disconnect cable wire from control arm. At heater control panel, select maximum cool position and hold it in this position. At air mix door linkage, reconnect cable wire to control arm. Gently slide cable housing back to eliminate slack, then snap cable housing into clamp. Adjust heater valve cable.

The fresh air vent and air mix are 2 different thing and are not related to the warm air.

Only the air mix door would affect the cold and warm air from the A/C.

Hi xcaliber937,

You mentioned passing the fuse with wires, which fuse was it?
Did you try engaging the compressor with a fuse power supply to test?
Are the cooling fans working when A/C is turned on?

Did your mechaninc perform the air mix cable adjustment? If he refuses to perform the adjustment, time to get a new mechanic.

Apart from the air mix cable, the other cable to adjust would be the heater valve cable.

System is not automatic climate control so apart from the above mentioned, there is no other things that can affect the temperature as the rear are blowing cold indicating the A/C system is not at fault.

The orther possible fault would be the air mix door sponge has deteriorated and is not providing sufficient sealing when closed. Repair would require the heater housing to be removed and that means taking the whole dash out.