Hello. I am trying to address my girlfriend's Jetta check engine light cause by a secondary air pump code. I hooked up a multimeter to the electrical connector and did not get a reading. I could have sworn the day before when I hit the pump with a socket wrench it came on for a few seconds. I had never heard it come on before. Does this pump only run at certain times and thus that is why I was not getting an electrical reading on the multimeter? Maybe I will hook the meter up to the connector while revving the engine.

If there is not power to the connector I was wondering what would the most likely problem be?

Thanks ahead of time,

Dave
dwil1971@yahoo.com

 

Have you had it scanned with VAG-COM\VCDS?

Can you post the error code number?

 

Thanks Keith. I don't have the code number, but when I asked the mechanic to write down what code it was giving, he wrote down the code was related to the secondary air injection. On another quote years ago it also indicates "secondary air pump" and a quote for $500.00.

I have no problem trying to find a used pump to get it working if it is the pump, but I am confused why no voltage reading from the connector on the wire harness. This will be the first time I have used a multimeter, but I did get a reading of the battery so I don't think I have the meter set wrong.

If the engine is running, is the secondary air pump always running?

Thanks,

Dave

 

Well the are 67 error codes for secondary air system.

 

The secondary air pump only comes on when you first start your car its only on for less than a minute.

 

Thanks for the help. I ran wires directly to the pump and surprisingly it the pump worked. When I have time I will try to troubleshoot further.

 

Well your wasting your time and money until you get it scanned with VAG-COM\VCDS and post the error codes.