Help Needed
Thread Starter
Racer
Joined: Jan 2008
Posts: 311
Likes: 0
Help Needed
I need some help. I have a 2002 A4 Coupe and I am haveing a serious issue that I think is electrical in nature? As I am driving I put the driver side window down and it immediatly throws codes: the engine into reduced power mode, service TPMS, all the gauges max out like temp pressure and fuel guage goes down to low fuel and the radio cuts off and the window control wont work nor will the key fob to lock the car? My window wont move, I turn the car off and the codes go away, but when I try to put the window down the codes get thrown again every time? If I drive and I dont touch the window control, the codes do not get thrown. Let me know what you think,
Brian
Brian
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
When you open the door, the tube that conects the door to the rest of the car that holds the wires is a known problem-looks like an Accordian (I assume you know what they are??). Try Advanced Search above on "Accordian Tube"
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Here is the deal. There are two plugs inside the door jam. You need to remove the rubber boot on both ends (it easily pops out) and pull on the wiring harnesses to fish the connectors out of the body. It will look some thing like this:
Look at the connectors and see if you see any bare wires like this:
If so pull the insulation back down and use some electrical tape to isolate the bare wire. You can also use some liquid electrical tape to insulate it. Ant boat store or hard ware store should have it.
BC
Thread Starter
Racer
Joined: Jan 2008
Posts: 311
Likes: 0
When I asked about being specific I was hoping for more info related to the accordian door wires? Has anybody ever experianced this before or know what is the specific problem I need to look to fix? Thanks for your help.
Brian
Brian
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Actually, it turned out it wasn't the bare wire. Bill later found that the serial interface wire's pin/socket actually gets lose and causes the problems on the data buss.
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Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Upon CLOSER examination and after being corrected by another forum member, the bare wire is not the cause of the door wiring issue.
It turns out that the MAIN POWER PLUG, female pins get deformed and start to make POOR contact. The module sees power spikes and causes the serial data buss to corrupt.
SO,,, Disconnect the power connector, examine the female (and male pins. Look for dirt, corrosion, burnt pins, and DEFORMED FEMALE PINS.
You can fix the female pins and reshape the part that makes contact with the male pin with a metal pick.
FIND THE DEFORMED PIN!
BC
It turns out that the MAIN POWER PLUG, female pins get deformed and start to make POOR contact. The module sees power spikes and causes the serial data buss to corrupt.
SO,,, Disconnect the power connector, examine the female (and male pins. Look for dirt, corrosion, burnt pins, and DEFORMED FEMALE PINS.
You can fix the female pins and reshape the part that makes contact with the male pin with a metal pick.
FIND THE DEFORMED PIN!
BC