I am looking for the a/c wiring schematic that would show everything from dash a/c light, to TIPM, to a/c compressor, etc.

I checked resistance on the a/c clutch two wire and show ZERO.

I checked a buddy's truck and he had 4ohms which 2 - 4ohms is normal. Also on the two wires that plug into a/c clutch from wherever they come from ( need schematic) they read 11.45 volts. That is with key on and a/c light on or off.

I checked a buddys truck and same thing. 11.50 volts wether the key is on or a/c light is on. On both trucks after turning off key and waiting a couple of minutes the voltage on the two wires going to clutch would start to drop off slowly to zero.

My main reason for troubleshooting is to know what I have going on before going to dealer and get shafted because money is tight now...

I do know the a/c clutch is bad but trying to figure out about the TPIM. Not throwing any codes relating too that.

On a side note and maybe coincedence. We left the a/c clutch two wire unplugged and on the way home the P0489 code egr circuit low come up???? Any ideas....

Thanks for anything...

John

 

i know thats pitiful parts failing on a new truck. how many miles on your truck

 

74000 miles.

Mostly highway pulling camper and boat sometimes. I guess having issues with a $40,000 truck has ruint me on buying a new vehicle. One issue that eats me up is everytime I need it worked on it is on dealers schedule and not mine. I have to take off work to get truck worked on....

Sorry for the rant... Anybody with experience on TIPM troubleshooting. Is the dealer the only one with access to STARSCAN or STAR something that can look at TIPM....

Thanks again....

 

Updates??

 

closing thread due to lack of activity, the OP can re-open the thread if the problem is still there