2002 anti-theft switch location

[jxxbrown]

Hello all,

I have a 2002 Thunderbird that is throwing a GEM B1830 DTC (door unlock disarm switch circuit failure) and the service manual looks for this to be an easy fix.

Other symptoms:

1. Key fob works perfectly
2. Open door and lock door, starts the red light blinking - no issues there
3. Open the driver's side door with the key (same key that starts the car) - the door is unlocked, the red light keeps flashing and about half the time the alarm triggers.

Very sneaky failure.

However... The manuals refer to a driver reset switch (c515) and the wiring diagrams refer to both c515 and as N490 Perimeter anti-theft reset switch. But there is no context in any doc I have for where the darn thing is. I'm hoping it's not behind the door panel.

Anyone have a reference (either part number or exploded diagram) that might help me find out where this is?

Thank you!!

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[doug7740]

The driver reset switch (C515) is behind the left door panel.



Fault code B1830 refers to a door unlock disarm switch circuit failure.



Use pinpoint test M3 to test the driver reset switch.

doug7740
1955 Thunderbird Blue

 

[jxxbrown]

Thank you, this is perfect. Can I ask the source for the exploded diagram? I have the wiring diagrams and service manuals, but don't have the exploded diagrams.

Thanks again for the help, this is exactly what I needed for this issue.

- Jeff

 

[jxxbrown]

In running the switch test, what do you use as ground for the meter. Normally, when checking resistance on a part I have it pulled, so I have access to the far side of the component. Just strip the wire behind the switch?

 

[jxxbrown]

Just a follow-up for the group.

I replaced the switch and not only did it clear the parasitic drain, but also a recurring catalytic converter error code.

Quite the odd diagnosis, but the results was as desired.