My trusty old 1999 Saturn wagon (228,000 miles) recently failed CT Emmissions test. It still runs great. 33-35 miles per gallon. The Diagnostic Trouble codes listed were the two following:
a.) P0702 Transmission control System Electrical
b.) P0410 Secondary Air Injection System

Anyone out there have any experience or advice on solving these two problems.

Thanks,
Jim S.

 

Guessing the one-way check valves are shot and are letting water back into the smog pump.

Poor TCM electrical connection
Inop TCM

 

Hello, Thank you for your imput. I believe that I have solved the trouble code P0410 problem thanks to a you tube instructional video (link below).
I am NOT a mechanic so I don't know what Poor TCM Electrical connection means. INOP TCM innoperable???
My focus now is the P0702 code. My Chilton's Saturn repair manual identifies this code as:
P0702 Tansaxle Actuator Fault Description: Low Voltage
Should I replace Fuses? There appear to be 3 transmission fuses in the fuse box under the hood.

Thanks again,
Jim S.

http://www.youtube.com/watch?v=wL1DcwLafgM

 

The TCM refers to your transmission control module. I'd try removing the wire harness plug and giving it a thorough cleaning and reconnecting it. Make sure to plug and unplug it several times. This will also help to clear any corrosion off the connector. Get a can of electrical contact cleaner from your local auto parts store. Pull those fuses and give them a look. Stranger things have happened.

 

Dang Ruby, some times you come off smarter than the average bear. That sounds like an excellent idea.

 

Geee, thanks UnclJohn, you're too kind. LMAO