weav01
Respected
So i have read nearly all the AC issue threads and learned alot. Here is my situation which is similiar to alot but need a little more direction and guidance.
First off AC quit working. Inside blower works and controls show green.
Rad fan/Cond Fan/Compressor do not engage when switch is turned on.
Relays all good (swapped back and forth)
Jumper 12v across pin 1 and 2 of Compressor clutch relay and clutch engages
Jumper 12v across......Rad fan relay and Condenser fan relay and fans begin to run.
Thermal protector measures 3.1 ohms across pin 1 and 3 of the connector.
ECM troubleshooting
I was able to sound out ECM pin E14 to the Compressor Relay pin 4.
Jumpered a ground to ECM E14 and compressor clutch engages
Sounded out ECM B2 to Rad fan/Compressor fan relay pin 4
Jumpered a ground to ECM B2 and both fans begin working.
I have read about Multiplex Control Unit. What is this and where is it. Am I heading in the right direction or did I miss something important.
Schematics that I have found online for this civic are not of the best quality for detailed items but got me in the right areas. https://estore.honda.com/service-express/subscriptions.asp might be a resourse if someone has used it and can give me their opinion. Its $10/day and i assume you can find good quality schematics.
Any Help and advice will be greatly appreciated.
Jeff
First off AC quit working. Inside blower works and controls show green.
Rad fan/Cond Fan/Compressor do not engage when switch is turned on.
Relays all good (swapped back and forth)
Jumper 12v across pin 1 and 2 of Compressor clutch relay and clutch engages
Jumper 12v across......Rad fan relay and Condenser fan relay and fans begin to run.
Thermal protector measures 3.1 ohms across pin 1 and 3 of the connector.
ECM troubleshooting
I was able to sound out ECM pin E14 to the Compressor Relay pin 4.
Jumpered a ground to ECM E14 and compressor clutch engages
Sounded out ECM B2 to Rad fan/Compressor fan relay pin 4
Jumpered a ground to ECM B2 and both fans begin working.
I have read about Multiplex Control Unit. What is this and where is it. Am I heading in the right direction or did I miss something important.
Schematics that I have found online for this civic are not of the best quality for detailed items but got me in the right areas. https://estore.honda.com/service-express/subscriptions.asp might be a resourse if someone has used it and can give me their opinion. Its $10/day and i assume you can find good quality schematics.
Any Help and advice will be greatly appreciated.
Jeff