I've been trying to fix my P0410 code for the last month using the information contained in the sticky thread. Here's what I've done so far:

1. Cleaned and checked the valve. Seems to work (allows air to pass in 1 direction only)

2. Cleaned the ground wire for the air pump

3. Cleaned the contacts on the relay. There was a little burning but they didn't appear pitted.

4. When I start the vehicle there is power to the harness as indicated by a test light. I should probably check with a meter to get exact voltage.

5. When I apply direct battery voltage to the air pump I get nothing. Maybe a couple grunts, and then silence.

So I purchased a new Bosch air pump and installed it. Cleared the codes. I thought that would fix it but the code came back within 15 minutes of driving the car.

So I've run out of ideas here. What else to check?

Thanks

Curt

 

I got code for air pump on the way to the inspection station today.

Pulled the RCM and the end relay was burnt, sent message to get some relays from Tighted.

In mean time I want to see about using a transistor replacement for the relay if I can get a FET with low enough on resistance to work with a tiny heat sink.. Air pump only runs for a short time.

More to follow. Photo attached ( I hope). Woody

 

Hey Woody ,are you going to make this the thread for all the info on this work in progress? Its titled right ; just have them add "and upgrade".

 

I'm getting power to the harness so I think my relay is good for the time being.

Just got done with another troubleshooting session with some very strange results. I jumpered the pump and it wouldn't run. It's a Bosch unit and I was a little surprised, but it happens. I removed it and was getting ready to box it up and return it to RockAuto.

Decided to jumper it one more time and, wouldn't you know it, it ran. I then reinstalled it and started the car. It ran for about a minute and then shut off like it is supposed to.

I'm not sure what happened but we'll put some miles on it and see. Best I can figure is maybe the ground didn't have good contact first time around (when I jumpered it the first time I ran the ground from the ground wire bolt to the terminal. When I jumpered it the second tim I ran the ground directly to the battery).

 

All my jumper wires , have alligator clips on the ends and a interchangeable (sharp nail..lol) probe tip.

 

I posted the installation of a 40 amp relay to replace factory relay, under the srt section. Woody