ON THIS ALARM SYSTEM PLEASE REFER TO THE 9000 ALARMS 89-90 FOR OTHER PROCEDURES WHICH ARE THE SAME. THIS OUTLINES THE DIFFERENCES.
Close everything up, go to transport mode by pulling and reinstalling either fuse 22 or 19 (whichever makes LED flash once every 4 sec.). Turn key in driver's door to unlock and hold for 10 sec. until siren chirps and lights flash . Release the key. LED will flash once per second for 10 sec. and then flash twice per second. The rest of the adjustment procedure is the same as the earlier system except for the amount each step moves the sensitivity. Repeat the adjustment(turn to lock, hold, release), until you can pull the driver's mirror to a position just before it locks and letting it snap back in place without triggering the alarm. If the alarm sounds when you snap the mirror, it will quickly stop and you can continue to adjust it by turning the key to lock until it doesn't sound with the snap. Check with mirror snap after every 10 steps until it doesn't set off alarm. This ECU reverts to a setting of 12 units below most sensitive when the battery power to it is lost and the alarm rearmed. Saab recommended setting it to 20 units, but I find using the mirror snap works best and it usually sets at about 22-30 units on this ECU.