Good Day!
This is my first post to this forum and may be a bit unorthodox in that I have fixed the problem prior to posting. I wanted to post however for two reasons. First and foremost what I found may help others and secondly to start my presence on this new (to me) forum. So the following is my original post from two other forums (vwvortex and the ross-tech forums). Following the post copy are my results and "fix".
First off I answered all my own questions.
The secondary air injection relay is indeed located where I thought it was.
With the relay socket slots for switched power shorted, the air pump should absolutely energize!
Trouble shooting is gonna be what troubleshooting is. Pick a point, work away from that one step at a time and perform only one change at a time!
One can indeed actuate the air pump itself through the VCDS console! Select "Engine" then "Output Tests" click next through the individual fuel injector actuations until you get to the "Secondary Air Injection Pump Relay" test. This test not only cycles the air injection pump relay but, also cycles the air injection pump in short one second or so intervals.
I was helped a great deal by another forum member through texting. Thank you!
I went through trouble shooting the entire system piece by piece. combi-valve, secondary air injection solenoid/N112 valve, hoses, vacuum lines and air pump itself. Lots of false starts and wrong paths. What was puzzling was that the air pump was not actuating by any means other than applying power directly to the terminals. I checked cable/wire continuity and ground all good. Then I noticed that one of the terminals on the air pump itself was shorter than the other. The male spade lug had pushed into the pump housing. By looking at my particular pump, I found it was it was possible to remove just the rear (connector side) of the pump without touching anything else. There are three tabs that need to be pulled up slightly then the rear of the pump pops right off. I removed the offending connector/mini "wire harness" and pulled out the small locking lugs on the male connector slightly. I then reinserted the harness into the housing, checked for a solid fit and reassembled the pump. This time when I used the VCSD to run a test I could hear the air pump pulsing with the test! I cleared codes and drove the car with no check engine light. I will try a cold start again tomorrow and see what happens as it is supposed to get in the low 40s tonight in Colorado. I'd post pictures for others to see but I am not allowed just yet on the forum as I am a newbi. I hope my description is sufficient for understanding my particular issue. I have heard this is not an uncommon occurrence. I hope this helps anyone else in their troubleshooting of the secondary air injection system.
https://forums.vwvortex.com/newreply.php?do=newreply&p=114748825
This is my first post to this forum and may be a bit unorthodox in that I have fixed the problem prior to posting. I wanted to post however for two reasons. First and foremost what I found may help others and secondly to start my presence on this new (to me) forum. So the following is my original post from two other forums (vwvortex and the ross-tech forums). Following the post copy are my results and "fix".
Good Evening, I wanted to post the follow up to my original post. I do believe I found the issue.
First off I answered all my own questions.
The secondary air injection relay is indeed located where I thought it was.
With the relay socket slots for switched power shorted, the air pump should absolutely energize!
Trouble shooting is gonna be what troubleshooting is. Pick a point, work away from that one step at a time and perform only one change at a time!
One can indeed actuate the air pump itself through the VCDS console! Select "Engine" then "Output Tests" click next through the individual fuel injector actuations until you get to the "Secondary Air Injection Pump Relay" test. This test not only cycles the air injection pump relay but, also cycles the air injection pump in short one second or so intervals.
I was helped a great deal by another forum member through texting. Thank you!
I went through trouble shooting the entire system piece by piece. combi-valve, secondary air injection solenoid/N112 valve, hoses, vacuum lines and air pump itself. Lots of false starts and wrong paths. What was puzzling was that the air pump was not actuating by any means other than applying power directly to the terminals. I checked cable/wire continuity and ground all good. Then I noticed that one of the terminals on the air pump itself was shorter than the other. The male spade lug had pushed into the pump housing. By looking at my particular pump, I found it was it was possible to remove just the rear (connector side) of the pump without touching anything else. There are three tabs that need to be pulled up slightly then the rear of the pump pops right off. I removed the offending connector/mini "wire harness" and pulled out the small locking lugs on the male connector slightly. I then reinserted the harness into the housing, checked for a solid fit and reassembled the pump. This time when I used the VCSD to run a test I could hear the air pump pulsing with the test! I cleared codes and drove the car with no check engine light. I will try a cold start again tomorrow and see what happens as it is supposed to get in the low 40s tonight in Colorado. I'd post pictures for others to see but I am not allowed just yet on the forum as I am a newbi. I hope my description is sufficient for understanding my particular issue. I have heard this is not an uncommon occurrence. I hope this helps anyone else in their troubleshooting of the secondary air injection system.
https://forums.vwvortex.com/newreply.php?do=newreply&p=114748825
