Diagnostic button

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Diagnostic button

Postby escu_calin » Sun Jul 11, 2010 2:41 pm

Piece of cake..
I've been keeping myself from obtaining diagnostic code for no reason for a while now
But that is an very important feature our car has.. so i decided to put it on my fingertip and extended the diagnostic page present here http://www.ftowa.com/html/workshop/workshopart07.html

Tools
1)cutter;
2)1 m of thin UTP patch wire (multifilar, not monofilar)... u'll see;
3)wet cloth;
4)screwdriver (cross + );

My approach
I did not do anything to tamper with the electric system of my car.. which is what i advise any of u who attempt this.

1) first i selected my candidates among the free dash buttons available.. spotted this:
I chose the one not in picture.. the antenna button
The procedure is the sam no matter what button u change! you must pull the wire from negative(chasis) and diagnosis pin 1 to the designated switch
Image
further i will describe the use of antenna switch.

2)lower steering wheel
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and un-mount the under steering wheel cover for ease of access to wiring and diagnosis connector
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3)Remove dash clocks cover
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4)Remove contacts from the antenna button
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5)Inspect the integrity of the connector
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6)Cut the wire. In my case i needed about that long so i can safely tape it and pull it thrum dash
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7)Made first connection ... i measured before so i can connect only the switched contacts...
If u do not need antenna, you can disconnect the affected pin and only insert the Diagnostic pin1 cable there
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8)Made second connection (brought negative from the close by pin) You can bring negative from chassis if u prefer.
fix in place the pulled wire and the rest with a plastic collier
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9) I reconnected the switch
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10) Pressed back the dash cover into the dash and connected the cable from step 7) to pin 1 diagnostic.
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fix the connected wire in place by fixing it with plastic collier from the nearby cables so it wont let go accidentally

11) Tested the switch with key on
pressed
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depressed
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12) Mounted back the cover.
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sat back and tested my 20 minutes of work :)
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escu_calin
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Re: Diagnostic button

Postby escu_calin » Sun Jul 11, 2010 2:45 pm

btw.. my engine light pulses at half a second continuous.
so i suppose after 4,3 km no diagnostic code.

but hey.. i can pull the codes anytime anywhere now;) .. lets hope it stays blink blink forever
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escu_calin
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Re: Diagnostic button

Postby Bernard » Sun Jul 11, 2010 4:04 pm

Good idea and a good guide.
Another one for the KB :wink:
Image
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