The ATA ( anti theft Alarm ) is very well integrated into many vehicle systems. I don't know if simply unplugging the module will disable it and allow the car to start, since it controls a starter relay. I've never had a problem with mine, so no experience. If you are electronically inclined, you can build a simple scan tool and look at the diagnostic trouble codes. I believe the info I have for my 1991 is also applicable to a 1992, but these systems changed often over the early years, so no guarantees that this is correct. The 16 pin diagnostic connector is under the hood on the right side under a small cover near the strut mount. The ATA module itself is in the trunk, upper right side.


Anti Theft Alarm Codes.
The codes blink out on an LED (1 blink = no errors) when pin 11 is momentarilly grounded. To clear an error, close switch for 4 to 8 seconds.

FAULT CODE TABLE (blinks)
DTC Readout Possible Cause of Failure
1 No fault found
2 Alarm activated, trunk sensor circuit
3 Alarm activated, engine hood circuit
4 Alarm triggered, glove compartment
5 Alarm activated, rear circuit Console compartment circuit
6 Alarm activated, front door circuit
10 Alarm activated, radio circuit
12 Alarm activated, ignition circuit
14 Alarm activated, brake circuit
19 AT Control module faulty
20 Left front door actuator, No ground connection
21 ATA disarmed, Starter lock-out relay module. short to circuit 30
23 ATA armed, Open to circuit 30

The scan tool is just a push button switch and LED wired together.
You can do a forum search and find info on how to build it and use it.

0______/ ____0______LED__/\/\/\/\/\_____0 12V+
pin 1 SW pin 11 C A 1K resistor pin 16

Connect wires of Scanner as follows (Model 129.061, 129.066)
16 pin Data Link Connector
Socket 11 (switch)
Black Socket 1 (-) ground
Red Battery (+) (LED)

This will only work on early models with the 16 pin diagnostic connector. Later systems were much improved and require complex computer scanners.
If this is all GEEK to you, take your car to a professional.

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