a/c compressor relay unit??

[marcus]

Originally Posted by CTScott

As I mentioned in your other thread - There is no relay! The AC ECU drives the compressor clutch via a FET within the AC ECU.

so me not getting power on the compressor maybe sensor issue then.. 3 guys in toyota cant figure it out but they did check the ac fluid was full cant do compression check without the compressor spinning...

[CTScott]

Originally Posted by marcus

so me not getting power on the compressor maybe sensor issue then.. 3 guys in toyota cant figure it out but they did check the ac fluid was full cant do compression check without the compressor spinning...

Did they actually plug the TechStream tool in and see what the AC ECU has to say?

[marcus]

Originally Posted by CTScott

Did they actually plug the TechStream tool in and see what the AC ECU has to say?

they wont do it unless the a/c button is blinking..which is not. would an obd reader give me a code i think my frind has one..

[CTScott]

Originally Posted by marcus

they wont do it unless the a/c button is blinking..which is not. would an obd reader give me a code i think my frind has one..

Only a TechStream will communicate with it. A regular OBDII scan tool doesn't have the protocol info for the Toyota specific diags.

There is no flashing error light mode for the AC. I know first hand, as I have and AC ECU running on my test bench that I talk to with my TechStream tool and my YarGauge. It has about 6 DTCs logged, since it has power and CAN comm connections and the only sensor connected is the ambient temp sensor.

Do you have another dealer you can work with, since it seems like the service people at this one don't have a clue as to what they are doing.

[marcus]

Originally Posted by CTScott

Only a TechStream will communicate with it. A regular OBDII scan tool doesn't have the protocol info for the Toyota specific diags.

There is no flashing error light mode for the AC. I know first hand, as I have and AC ECU running on my test bench that I talk to with my TechStream tool and my YarGauge. It has about 6 DTCs logged, since it has power and CAN comm connections and the only sensor connected is the ambient temp sensor.

Do you have another dealer you can work with, since it seems like the service people at this one don't have a clue as to what they are doing.

ok ill try that......thanks