Problem w vats system
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Pull the covers to get to the ignition switch. You will see a black wire. Disconnect the plug. Wire a resistor the same value as the pellet in your key on the side that goes to the PCM. You'll need to use a ohm meter to read the pellet. Put it all back together but leave the female plug disconnected.
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
Last edited by DeeGee; Aug 29, 2012 at 01:32 PM.
Drifting
Joined: May 2010
Posts: 1,482
Likes: 2
From: Pearland, TX
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Thread Starter
Burning Brakes
Joined: Apr 2003
Posts: 1,004
Likes: 0
From: Miami Fl
Pull the covers to get to the ignition switch. You will see a black wire. Disconnect the plug. Wire a resistor the same value as the pellet in your key on the side that goes to the PCM. You'll need to use a ohm meter to read the pellet. Put it all back together but leave the female plug disconnected.
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
1) Purple with white stripe
2) White with a black stripe
Are you having a specific problem? You have not provided any details...codes..etc..
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN