Alarm Module - Manual Correction
90saab06 CATEGORY ElectricalSECTION PAGE
3 2
ISSUE CODE
09/90-0021 383
Supersedes S.I. 02/90-1216
Subject: Service Manual Correction:
Alarm Module Information
Application: 1989-90 9000 Models
As described in S.I. 02/90-1216, a new electronic control unit (ECU) for the 9000 alarm system was introduced in 1990 production at VIN L1007892 and L2005894. Compared to the previous alarm ECU, the new ECU (P/N 40 92 037) has revised procedures for entering the diagnostic and programming modes as well as a different pre-programmed sensitivity level.
The alarm information presented on pages 345-346 of 9000 Service Manual Sec. 3:2, Electrical system M1989-90 refers only to the alarm module used up to VIN-L1007891 and - L2005893 (P/N 95 66 100). Please cross out both pages 345 and 346 in your dealership copy of this Service Manual section. Insert the correct information provided on the attached replacement pages.
NOTE
The attached replacement Service Manual pages also supersede the replacement page provided with S.I. 02/90-1216. The previous page (marked "Revised 02/90") should be discarded.
Alarm Operation
Cars for the US market are equipped with a factoryinstalled alarm system. The alarm is activated via a microswitch (363) located in the lock cylinder of the driver's door. The switch arms the alarm when the door is locked and disarms it when the door is unlocked.
The power supply (+ 30) for electronic control unit (289) is taken from fuse 19 via pin 10, regardless of the position of the ignition switch. The alarm will be armed 10 seconds after the car is locked (after the interior lighting is switched off.) During this 10-second period, the driver's door or the luggage compartment lid can be opened without setting off the alarm. When the last door or the lid has been closed, the 10-second delay cycle will start.
When the alarm system has been armed, it will be set off if one of the following contacts should close:
^ The door switches (54) connected to pin 11
^ The luggage compartment light switch (56) connected to pin 3
^ The hood switch (276) connected to pin 3
The alarm will also be set off if the motion detector in the control unit is actuated, i.e. when the car is subjected to bumps, impact, vibrations, etc.
If the motion detector is subjected to minor shocks or bumps, the siren will sound for five seconds. If it is subjected to several shocks or bumps, it will change over to the activated state. If it is subjected to repeated shocks or bumps, the alarm will be set off.
When the alarm is set off:
The LED at the left-hand speaker grille will flash at the rate of twice per second. The starter motor interlock will be activated. The starter interlock relay in the electronic control unit (289) will be energized and the starter motor will be disconnected for approximately 10 minutes. The motion detector will be disconnected when the starter interlock relay is de-energized.
The siren (275) is supplied via pin 12, and the parking lights via pin 16. The siren will sound and the parking lamps will flash for 30 to 60 seconds at the rate of once every two seconds.
The parking lights include:
- Front parking lights (13)
- Rear lights (14)
- License plate illumination (15)
- Side marker lights (234)
If the headlights (12) or the fog lights are switched on when the alarm is set off, they will also flash.
The alarm cycle will be repeated five times (with a delay of 15 seconds between each cycle) if the actuated switch has not been reset.
The alarm system includes an LED (305) located at the left-hand speaker grille. The LED indicates the following conditions:
Condition (Setting) Of Alarm System
LED Flash Pattern
Condition LED
0 De-energized Off
1 Disarmed Off
2 Armed 1 flash per second
3 Alarm set off 2 flashes per second
5 Transport mode 1 flash per 4 seconds
(alarm disconnected)
7 Programming Mode 1 flash per second
8 Sensitivity Test 2 flashes per second
9 Diagnostic Mode On (steady light)
Condition 5 - Transport Mode (Alarm Disconnected)
When the supply to the alarm has been interrupted (by removing and reinstalling the alarm fuse for instance) the alarm will be placed in transport mode, and will not be armed when the car is locked. The transport mode is intended for use when the car will be locked during transport and the alarm is unnecessary.
To revert to condition 1 (Disarmed Mode): insert the key in the lock in the driver's door and quickly turn it from the neutral position to the unlocked position three times within two seconds.
Condition 7 - Programming Mode
^ Remove and reinstall fuse 19 (fuse 22 in early M89 cars)
^ Make sure that the hood and the luggage compartment lid are closed
^ Insert the key into the lock in the driver's door and turn it from the neutral position to the unlocked position and keep it there (approximately 10 seconds) until the siren chirps and the parking lights flash.
^ If the siren DOES NOT chirp, then the car is equipped with the early alarm ECU (P/N 95 66 1 00). To enter the programming mode with the early ECU, turn the key in the driver's door lock from neutral to the unlocked position twice. The siren will sound twice.
^ Once the siren has sounded the LED will flash once persecond.
After 10 seconds, the alarm will automatically switch over to Condition 8 (Sensitivity Test).
NOTE
If the hood or luggage compartment lid is opened before the alarm has switched over to Conditlon 8, the motion detector will be indefinitely switched off.
Condition 8 - Sensitivity Test In this mode impacts of varying intensities can be applied to the car in order to test and modify the sensitivity of the motion detector. The motion detector sensitivity can be programmed to 250 different levels of sensitivity. Step 1 is the most sensitive setting and step 250 is the least sensitive setting. At the end positions, 0 and 250, the parking lights will flash and the siren will chirp for one second. The pre-programmed value of the motion detector depends on which of two different alarm ECU variants are installed in the car.
^ Alarm ECU P/N 95 66 100 (Up to VIN L1007891 and L2005893) has a sensitivity default setting of 3.
^ Alarm ECU P/N 40 92 037 (As from VIN L1007892 and L2005894, or where installed as a replacement part on an earlier car) has a sensitivity default setting of 12. The sensitivity setting will revert to the default level if the power supply to the alarm is interrupted. Saab recommends that the default level be increased to a basic level of 20. This basic level may need to be adjusted depending on the environment and driving conditions of the car.
To reduce the sensitivity: Turn the key in the driver's door from the neutral position to the locked position and back. This will decrease the sensitivity one step. Check the sensitivity by making an impact on the windshield or rocking the car. If the alarm is set off, the siren will sound and the parking light will flash for one second. Repeat this procedure until the desired sensitivity has been obtained. Try to use the same force each time you are making an impact or rocking the car.
To increase the sensitivity: Turn the key in the driver's door from the neutral position to the unlocked position and back. Wait two seconds. This will increase the sensitivity one step. Check the sensitivity in the same way as above. Repeat this procedure until the desired sensitivity has been obtained. When the desired sensitivity level has been set, unlock the driver's door twice quickly (this sets the sensitivity level into the memory), and the alarm will switch over to Condition 5 (transport mode). Check that the LED flashes once every four seconds. To return to Condition 1 (disarmed mode): Insert the key into the lock in the driver's door and quickly turn it from the neutral position to the unlocked position three times within two seconds.
Condition 9 - Diagnostic Mode Preparations:
^ Remove and reinstall fuse 19 (fuse 22 on early M89 cars).
^ Make sure that the luggage compartment lid and all doors except the driver's door are closed.
^ Open the hood.
^ For the early alarm ECU, insert the key into the lock in the driver's door and turn it from the neutral position to the unlocked position once. After a delay the LED will remain illuminated.
^ For the later alarm ECU, insert the key into the lock in the driver's door and turn it from the neutral position to the unlocked position and keep it there for approximately five seconds until the LED remains steadily illuminated.
Motion Detector:
^ Close the driver's door. The siren should sound twice and the parking lights should flash three times. This check can be performed only once each time the alarm is in the diagnostic mode. Door Lock Switch:
^ Lock the driver's door. The parking lights should flash three times. Unlock the door. Hood Switch:
^ The luggage compartment lid must be closed.
^ Close the hood. The parking lights should flash three times. Luggage Compartment Switch:
^ The hood must be closed.
^ Open and close the luggage compartment lid. The parking lights should flash three to six times. Door Switches:
^ The hood and luggage compartment lid must be closed.
^ Open one of the doors. The parking lights should flash three times.
^ Close the door. The parking lights should flash three times.
^ Check the other door switches in the same way. Note. Do not open the doors until the interior lights have gone out (about 15 seconds). Starter Motor Interlock:
^ Turn the ignition key to the start position. The starter motor should not operate. To switch from the diagnostic mode to Condition 5 (transportmode): Insert the key into the lock in the driver's door and quickly turn it from the neutral position to the unlocked position twice. Make sure the LED flashes once every four seconds.
To switch to Condition 1 (disarmed mode): Insert the key into the lock in the driver's door and quickly turn it from the neutral position to the unlocked position three additional times within two seconds.
To Disconnect The Motion Detector Temporarily
If necessary (when the car is being transported on a ferry, etc.) the motion detector can be temporarily disconnected without disconnecting the other alarm functions.
^ Begin with the alarm disarmed.
^ Lock the driver's door and hold the key in the locked position for more than three seconds. The motion detector will then be disconnected.
^ The next time the door is unlocked, the motion detector will again be activated to the alarm.
Disconnecting The Motion Detector Indefinitely
^ If necessary, the motion detector can be disconnected indefinitely (See Condition 7, programming mode).
^ To reactivate the motion detector from this mode, remove and reinstall fuse 19 (or fuse 22 on early M89 cars). Quickly turn the key in the driver's door from the neutral position to the unlocked position three times within two seconds. The alarm will now revert to Condition 1 (disarmed).