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Volkswagen Passat: 1998-2005 (B5) LDP problem

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Last Post: Apr 27, 2014 4:46 PM Last Post By: vinney

Posts: 3
Registered: 01/19/05
LDP problem
Posted: Jan 19, 2005 11:52 AM
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Has anyone had any experiences with the leak detection pump on a 99 passat? I have gone through all the tests in the bently manual,ohmed out the pump , checked for voltage at wire #3 etc, but the pump doesn't seem to ever run.When I went to get it through emmissions, it came out with a code 1476.I did find a severed vacuum hose going to the LDP, and I repaired it, but still have an mil. Any ideas?

Posts: 1
Registered: 04/27/14
Re: LDP problem
Posted: Apr 27, 2014 4:46 PM   in response to: shoestring in response to: shoestring
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I have same problem vw mk4 jetta 2.0 leak detection pump curcuit open po1475,if you connect the connector to the ldp and check for voltage I get 11.5 volts in all three wires if you disconnect then terminal 3 only has voltage ??? so I thought there was a short in ldp and replaced it same problem.can you bypass pump or can you hot wire pump to see if the new one operates?

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