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Trouble code found... Secondary air injection system relay malfunction

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Old 05-23-2011, 11:14 PM   #1
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Trouble code found... Secondary air injection system relay malfunction

Can anyone shed some light on this for me? Truck wont start without pouring fuel into TB. 2001 tbi
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Old 05-23-2011, 11:48 PM   #2
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Re: Trouble code found... Secondary air injection system relay malfunction

Here's some Stuff I found on the net...., I myself never heard of this code personally.

Quote:
ok I have a 2000 s-10 2.2 4 cyl, which had the code, p0410, secondary air injection malfunction. I first was told it was the air pump, so I bought a new one and installed it, had the code cleared, and BAM driving it the next day the light came back on with the same code. Well after doing some research I came up with my own diagnostics.
1. follow the hose going out of the air pump to the top of the engine, disconnect it, and on a COLD START, the air pump should be pumping air through the hose, if it is not then the fuse is blown, or the pump is bad. There is 2 in-line fuses for this system by the battery, it is best to take the battery out to get to them, because they are not in the fuse box. One is a MAX 30A, the other, a typical 10A.
2. If the pump is doing what it is supposed to on a cold start, there is two other probable causes that I know of, one is about a $25 vacuum operated switch, and the other device is some kind of one-way air flow (do-hickey) which costs about $25 dollars also. These all connect on to the air pump one way or another, and the only thing you need to note is the in/out hoses, and replace those cheap hose clamps, with some quality, reusable stainless steel ones.
After replacing the one-way switch on my truck, the light still came on, and the problem all along was the $25 dollar vacuum switch connected to ther air pump. So after a few unneccary, costly repairs my truck didn't need, it is doing fine again. Oh well at least I have a whole new secondary air injection system now, kept the old parts as spares, and can't complain about that being the only thing so far with 70,000 miles on it!!!
or maybe try this thread link here...

http://www.s10forum.com/forum/f107/s...system-176157/

or this...

Quote:
This is a pump that sits underneath your front bumper on the passenger side. It is about the size of a baseball and has two hoses going into it. I would suggest you replace it yourself as it would cost you about $360.00 if you were to go through the dealer. If you would like pics. of it you can feel free to e-mail me at uscg6060@juno.com I am going to be going to the dealer to see if there is some kind of re-call on these pumps seeing as how I am about to go on my fourth one and my truck is only a 2000 S-10 Hope this helps you out some.
Drew

Answer

Water intrusion is what will typically kill these electric pumps. There is a Technical service bulletin (#04-06-04-015) Regarding this problem, according to the tsb, you will need a new pump and there is a hose assy. #12590627) that has you reroute the pump from future water intrusion or it is gaurenteed to fail again.

I found this air pump and hose kit on Ebay.I did a search for S10 air pump.Great price on the new pump and they will ship the hose kit if you want order it.Fast shipping also.Total price for both pump and hose kit considerably less than a dealer.

Although I have had water in the pump I did not see any indication of the inlet hose as the cause. It was suggested that the one way metal check valves ($15.00) that mount to the rt & lt exhaust manifold are worn and allow water from the exhaust to get sucked back into the pump. I first replaced the pump and within a week of dry weather driving the light came back on. I checked the pump and it was again full of water. I just replaced the valves which had deteriorated on the inside. So hopefully this will eliminate the problem. Note - The valves are impossible to remove without removing the 1/2 tubes (held on with 2 nuts) they are attached to the manifold with. The valve threads sieze to the tube thread and had to be clamped in a vise to remove - I actually had to hacksaw the valve section to get it off the pipe. Careful as not to damage the threads. Good Luck Vitaman

Answer

Thanks this is very helpful, just thought I might add something. I have had the same problem with water in the air pump on my 2000 Chevrolet Blazer 4.3 L V6. I went on ebay and searched for the pump like you had recommended and I found a pump for sale by seller:autopartsdirect2you ,any way the lifetime warranty offered by these guys is great. The problem is with water gettin ginto the air pumps, and the warranty covers it. Just thought I'd add that. I think a good warranty with this in particualr is very important

Read more: http://wiki.answers.com/Q/What_do_yo...#ixzz1NEZGdHTL
Quote:

P0410 Description

An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module PCM grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.

Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitationPossible Causes- Vacuum hoses damaged.
- Air Pump inoperative.
- Air bypass solenoid circuit open.
- Air bypass solenoid leaking/blocked or stuck open/closed.
- Air diverter valve leaking/blocked or stuck open/closed.
- Air hoses r Possible Solution - Visually inspect vacuum lines for disconnects in the AIR systems and visually inspect for proper vacuum line routing. Repair if necessary.
- Disconnect the air pump hose at the solenoid valve, start the engine and see if there is air being pumpedWhen is the code detected?The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.

Tech NotesService Bulletin

1999-2003 Chevrolet Blazer, S10
1999-2001 GMC Jimmy
1999-2003 GMC Sonoma
1999-2001 Oldsmobile Bravada

Hope this helps...
Allen
Old 05-24-2011, 12:07 AM   #3
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Re: Trouble code found... Secondary air injection system relay malfunction

dtc p0410 will have no effect on starting or running. I drove mine for a week or so until I got it fixed. First thing I would check on the sai code is the fuse in the panel between the battery and fender.
Old 05-24-2011, 02:41 AM   #4
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Re: Trouble code found... Secondary air injection system relay malfunction

Fuse is good. It runs but not without a sprinkle of gas to the TB. Fuel pump and assembly are new. (i have two and have tried them both) honestly thinking it needs a new fpr or one of the main injectors on the spider

Good to know the code isnt keeping me from starting properly but still wanna fix it. What did you have fixed to clear the dtc?
Old 05-24-2011, 11:52 PM   #5
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Re: Trouble code found... Secondary air injection system relay malfunction

Quote: Originally Posted by Gimp
Fuse is good. It runs but not without a sprinkle of gas to the TB. Fuel pump and assembly are new. (i have two and have tried them both) honestly thinking it needs a new fpr or one of the main injectors on the spider

Good to know the code isnt keeping me from starting properly but still wanna fix it. What did you have fixed to clear the dtc?
http://www.s10forum.com/forum/f107/s...system-176157/ A lot of good info in this thread. My 2002 had a locked up air pump [repaired from info in thread] a blown fuse, and a bad solenoid. I used a vent solenoid I had laying around, so I fixed it without buying parts.
now for your start issue, fuel pressure, regulator? EGR ?
Old 05-24-2011, 11:54 PM   #6
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Re: Trouble code found... Secondary air injection system relay malfunction

secondary air injection is the air pump right? i had this issue but not the same code...mine still ran...and fine too at that? I would imagine that isn't the cause of the no-start but i'm not a mechanic so don't quote me...lol
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