Do I Need to Replace Water Pump?

[CTScott]

Originally Posted by marcus

still cant figure out how toyota manage to disable my a/c system after they replaced the water pump.. a/c not turning on , fuse is ok but seems like im not getting power to the a/c compressor..go figure..

Check to see if they plugged the connector back into the compressor.

[marcus]

Originally Posted by CTScott

Check to see if they plugged the connector back into the compressor.

yes they did..already rechecked it also checked fuse which was good still got light on the ac button..compressor click if i ran power directly from the battery so im at lost on what i am missing..too cold to fix right now waiting for a warmer weather..

[CTScott]

Originally Posted by marcus

yes they did..already rechecked it also checked fuse which was good still got light on the ac button..compressor click if i ran power directly from the battery so im at lost on what i am missing..too cold to fix right now waiting for a warmer weather..

The AC ECU won't activate the solenoid for the compressor if there is an issue with the pressure (too high or too low), so there is probably a good chance that they nicked or flexed one of the aluminum tubes enough to cause the system to vent.

[marcus]

Originally Posted by CTScott

The AC ECU won't activate the solenoid for the compressor if there is an issue with the pressure (too high or too low), so there is probably a good chance that they nicked or flexed one of the aluminum tubes enough to cause the system to vent.

oh yeah i also check that as well toyota said its full but cant get pressure since i cant get the compressor to work..

[CTScott]

Originally Posted by marcus

oh yeah i also check that as well toyota said its full but cant get pressure since i cant get the compressor to work..

If they plug the TechStream tool into the car, the AC ECU will tell them why it isn't happy.

[marcus]

Originally Posted by CTScott

If they plug the TechStream tool into the car, the AC ECU will tell them why it isn't happy.

thats what needs to be done but they gonna charge me just for them to do that although i have a friend that works there i just have to have him take my car for a day.. thanks scott.

[CTScott]

Originally Posted by marcus

thats what needs to be done but they gonna charge me just for them to do that although i have a friend that works there i just have to have him take my car for a day.. thanks scott.

Below is the kind of stuff it will tell you. This is a capture from my TechStream tool talking to my Yaris test bench. The AC ECU only has the ambient temp sensor connected, so I throw DTCs for the evaporator temp and the refrigerant pressure.

AC DTCs.jpg

AC Data.jpg