SERVICE MANUAL UPDATE PARTS & SERVICE INFO ON SECURITY SYS.. Saturn Saturn 1991

For 1990-2009 cars

# SERVICE MANUAL UPDATE PARTS & SERVICE INFO ON SECURITY SYS.

#### SUBJECT: Parts and Service Information on Saturn Retailer Installed Security System

#### MODELS AFFECTED: 1991 and 1992 Saturns

PURPOSE: This bulletin contains the removal and installation procedures for security system module, wiring diagrams and diagnosis for the Saturn Retailer installed security system.

#### NOTE: This information will be printed in the 1991-1993 Saturn Service Manual.

PROCEDURE

SECURITY MODULE

Removal

1. Disconnect negative battery cable.

2. Remove driver's side close-out panel to expose security system module.

3. Remove three screws and security system module.

4. Disconnect electrical connector.

Installation

1. Connect security system module to wiring harness.

2. Position security system module behind bracket and secure with three screws.

3. Route antenna wire, extending it to its full length and secure antenna wire in place with tie wraps.

#### NOTICE: Do not secure antenna wire to the Park/Lock inhibitor cable on automatic transaxle vehicles. Side load on the Park/Lock inhibitor cable may cause binding.

4. Install driver's side close-out panel.

5. Connect negative battery cable and reset clock.

Torque: 17 N.m (150 lbs. in.)

6. Program security system.

PROGRAMMING THE SECURITY SYSTEM

Programming of the security system is required. Each button on each transmitter, has one of approximately 19,000 codes. Five codes must be loaded into the security system module. They can be five different codes, all the same code, or any other combination.

Programming Procedure

1. If reprogramming the security module, disconnect the negative battery cable and wait ten minutes for the capacitors internal to the security module to discharge.

2. Connect the negative battery cable.

3. On up -level systems, verify that the parking lamps are flashing. If the lamps are not flashing, refer to the cause/complaint chart.

4. Close all doors and stand outside of the vehicle.

5. Depress one transmitter button firmly for one full second, then release for two seconds. Repeat this step four more times. On up-level systems only, the parking lamps will turn on steady while the transmitter button is held down.

6. Open the driver's door, get in vehicle and close the door.

7. Cycle the ignition key to the RUN position and then to the OFF position.

8. Open the driver's door, exit vehicle and close the driver's door.

9. The security system is programmed.

#### NOTICE: Failure to complete all programming steps in sequence may cause system malfunction. If system is not working properly, repeat entire programming procedure.

GENERAL DESCRIPTION

Valet Switch

The security system valet switch is used to select the desired mode as follows:

o ON: System is active. System can be armed actively or passively. If armed, system will respond to electrical or shock inputs.

o SHOCK OFF: System is active. System can be armed actively or passively. If armed, system will only respond to electrical inputs.

o OFF: System is off.

Light Emitting Diode (LED)

The light emitting diode (LED) indicates the status of the security system as follows:

Flashing once per second: Active (valet switch On or Shock Off), armed and less than 72 hours have elapsed since system was armed.

Flashing twice per second: Inactive (valet switch Off) and less than 72 hours have elapsed since ignition was turned Off.

Flashing very rapidly: The ignition is On (key in RUN position) and one or more doors is open.

Flashing in groups of two: System was armed. Then the alarm was activated by a door being opened. (Refer to History Feature in Owner's Manual.)

Flashing in groups of four: System was armed. Then the system was activated due to shock detection. (Refer to History Feature in Owner's Manual.)

Flashing in groups of five: System was armed. Then the system was activated due to electronic tampering. (Refer to History Feature in Owner's Manual.)

Flashing in groups of seven: System was armed. Then the system was activated because the valet switch was turned to the OFF position. (Refer to History Feature in Owner's Manual.)

Flashing in groups of eight: System was armed. Then the system was activated due to ignition switch tampering. (Refer to History Feature in Owner's Manual.)

Not flashing: 72 hours have elapsed since the ignition was turned Off or the ignition is On (key in RUN position).

#### NOTICE: LED will also stop flashing if the system has completed a full two minute alarm cycle.

Horn

The horn is activated by the security system as follows:

One chirp: System has just been armed (actively or passively).

Two chirps: System has just been disarmed with the transmitter (actively).

Two chirps followed by one chirp: System has just been disarmed with the transmitter (actively) and the LED is flashing to indicate history. (Refer to History Feature in Owner's Manual.)

Short tones: System is in escalating alarm. Occurs prior to the full-alarm cycle.

Long tones: System is in the full -alarm cycle.

Dome Lamp (Up-Level System)

The dome lamp is controlled by the security system to provide an additional 30 seconds of illumination upon exiting the vehicle. Upon returning to the vehicle and disarming the system or unlocking the doors with the transmitter, the dome lamp is also turned On.

Parking Lamps (Up-Level System)

The parking lamps are activated by the security system as follows:

One flash: System has just been armed (passively or actively).

Two flashes: System has just been disarmed with the transmitter (actively).

Two flashes followed by one flash: System has just been disarmed with the transmitter (actively) and the LED is flashing to indicate history. (Refer to History Feature in Owner's Manual.)

Continuous flashing: System is in the alarm cycle. Continuous flash will also occur if the system has had a power interruption (battery low) indicating that it is ready for transmitter programming.

Door Jamb Switches

The security system monitors the door jamb switches as follows:

o If the system is armed (actively) and a door is opened, the system will enter the escalating alarm cycle followed by a full-alarm cycle.

o If the system is armed (passively) and a door is opened, the system will count down 17 seconds and if the key is not turned to the RUN position, or if the system is not disarmed with the transmitter, a full alarm cycle will begin.

o After the ignition is turned Off, the last door is closed and the valet switch is in the ON or SHOCK OFF position, the system will passively arm after approximately 25 seconds.

Power Door Lock Relay and Actuators (Up-Level System)

On vehicles equipped with power door locks, the security system supplies voltage to the power door lock relay to energize the power door lock actuators. The power door locks are controlled as follows:

o The remote transmitters will command the security system to lock and unlock the doors (even if the system is Off).

o When panic mode is activated, the door locks will be commanded to unlock.

o The door locks will not be commanded to lock when the system is passively armed.

o The door locks will be commanded to lock when the system is actively armed.

Remote Transmitters

The remote transmitters are radio frequency type and operate on an FCC-Approved frequency of 318 Mhz. Each button transmits one of 19,000 possible codes over a nominal range of 25-50 feet. (Range may be improved by having more keys on ring of transmitter and positioning so transmitter is in your hand with the keys hanging free.)

#### NOTICE: Radio frequency interference caused by close proximity to radio broadcast stations, motors, heaters, etc., may interfere with transmitter operation.

Transmitter commands are recognized by the security system only if their individual code has been programmed into the security system module memory after application of battery voltage.

#### NOTICE: The transmitter button must be held for one full second to be recognized by the security system module.

The transmitters are powered by a single 12 volt battery or eight 1.5 volt batteries. Refer to Owner's Manual for recommended battery specifications.

The transmitters are used to:

o Arm the security system (actively)

o Disarm the security system (actively)

o Lock the doors (up-level system on vehicles equipped with power door locks)

o Unlock the doors (up-level system on vehicles equipped with power door locks)

o Invoke or disable the "Panic" mode (Refer to Panic Mode in Owner's Manual.)

Security System Module

The security system module is an electronic device that controls all of the features of the security system.

Security system features include:

Passive arming: When the valet switch is in the ON or SHOCK OFF position, the security system is enabled for passive arming. Arming of the system is accompanied by a horn chirp. The system will not lock the doors passively.

o Base system - After the ignition key is turned Off, one or more doors is opened and the last door is closed, the system will passively arm after approximately 25 seconds.

o Up-level system - After the ignition key is turned Off, one or more doors is opened, and the last door is closed, the system will passively arm after approximately 55 seconds.

Upon returning to the vehicle, the system may be disarmed in either of the following ways:

o Depress the transmitter button for one to two seconds. Two chirps will be heard to indicate that disarming is complete. One additional chirp will be heard if the alarm had been activated since the last ignition cycle.

o Enter the vehicle and turn the ignition switch to the RUN position. If the ignition switch is not turned to the RUN position within 17 seconds of opening a door, the alarm will be activated until the key is turned to the RUN position or the transmitter is used to disarm the system.

#### NOTICE: System will not respond to active (transmitter) disarming if it has entered the power down mode.

Active arming: When the valet switch is in the ON or SHOCK OFF position, the security system is enabled for active arming. Active arming of the system is accompanied by a horn chirp and locked doors (up-level system, on vehicles equipped with power door locks).

After the ignition key is turned Off, one or more doors is opened, and the last door is closed, the system may be armed using the remote transmitter. If the system is armed prior to time-out of the dome lamp (only on vehicles equipped with the delayed dome feature), one chirp will be heard when the transmitter is accepted (pre-arm feature) and another will be heard when the dome lamp turns off and the system actually arms.

Upon returning to the vehicle, the system may be disarmed only by depressing the transmitter button for one to two seconds. Two chirps will be heard to indicate that disarming is complete. One additional chirp will be heard if the alarm had been activated since the last ignition key cycle.

#### NOTICE: System will not respond to active (transmitter) disarming if it has entered the power down mode.

Shock detection: When the valet switch is in the ON position and the system is armed, the security system will monitor the vehicle for shock inputs. The security system is most sensitive to shock in the lateral direction. Shock is defined as a sudden impact such as kicking a tire, breaking a window, etc. The security system is less sensitive to vertical motion such as "bouncing" the vehicle up and down on the suspension.

Upon detection of one shock input, the security system will activate one "warn away" (one horn honk). Repeated shock inputs (three or more within two seconds) will result in a full -alarm activation.

Sensitivity to shock may be adjusted using the "turn pot" on the side of the security system module (clockwise - increases sensitivity, counterclockwise - decreases sensitivity). Shock detection may be disabled by selecting the SHOCK OFF mode with the valet switch.

Panic mode: The "Panic mode" may be activated by depressing the transmitter button for three seconds. This will cause a full -alarm cycle. The alarm will stop if the ignition key is turned to the RUN position or if the transmitter button is depressed for eight seconds.

Panic mode can be activated independent of the valet switch position.

Dome lamp convenience: Available only on the up -level security system, the security system will command the dome lamp to stay on for 30 seconds after the last door is closed or until the security system is actively armed. Upon returning to the vehicle, the remote transmitter may be used to turn on the dome lamp before the door is opened to allow visual inspection of the vehicle interior.

Parking lamp flash: Available on the up-level security system, the parking lamps will flash:

o During system programming.

o When the system is armed.

o When the system is disarmed.

o During the warn-away alarm.

o During the full -alarm cycle.

o During the 17 second passive arm delay.

o After a battery voltage power down.

Parking lamp flash provides a visual theft deterrent in addition to the audible horn.

Power down: To preserve the battery of the vehicle, the system will power down the LED indicator and the receiver. This will cause the LED to stop flashing and the transmitters to be ignored. The security system will still monitor for shock or electrical inputs that may activate the alarm.

To "wake-up" the security system: Open any door to activate the alarm. Next, depress the transmitter button or turn the ignition key to the RUN position to stop the alarm.

Power down mode is active when:

o The vehicle has not been operated for more than 72 hours; or

o The alarm was activated for a full, two minute cycle and the input which set off the alarm is no longer present.

Remote door lock/unlock: Available on the up-level security system, the transmitter may be used to command the power door locks to lock and unlock. Depress the transmitter button for one to two seconds to unlock the doors. Depress the transmitter button again to lock the doors. This action will also disarm and arm the system if the valet switch is in either the ON or SHOCK OFF position.

Alarm cycles: The security system has four alarm cycles as follows:

o Warn away - This alarm cycle is activated by a sudden shock if the security system is armed and the valet switch is in the ON position. This alarm cycle consists of one sharp horn blast. A parking lamp flash will accompany the horn blast on up -level security systems.

o Escalating alarm - This alarm cycle is activated when a door is opened after the security system has been actively armed. This is to allow time for the forgetful owner to disarm the system prior to the full -alarm. This alarm consists of short honks of the horn, followed by full-length blasts of the horn. Parking lamp flashes will accompany the horn blasts on the up-level security system.

o Instant alarm - This alarm cycle is activated whenever disarming does not occur with 17 seconds after opening a door or upon detection of an electrical input other than a door opening on a passively armed vehicle. The instant alarm is also activated by any electrical input on an actively armed vehicle.

o Panic alarm - This alarm is owner activated by depressing a transmitter button for more than three seconds.

The preset alarm duration is two minutes in any mode. At the end of the two minutes, the security system will check if the condition causing the alarm has been corrected. If it has been corrected, the system may go into the power down mode. If it has not been corrected, the alarm continues for a maximum of ten minutes.

History: The LED will flash to indicate any activation of an alarm cycle while the owner is away (as long as the system did not enter the power down mode). The LED will flash in a specified sequence to indicate the condition that caused the alarm cycle as follows:

o Groups of two - A door was opened.

o Groups of four - The vehicle was bumped or jolted too many times.

o Groups of five - The unit was tampered with electronically.

o Groups of seven - The valet switch was tampered with.

o Groups of eight - The ignition switch was tampered with.

The history function will reset when the ignition key is turned to the RUN position.

ELECTRICAL DIAGNOSIS RETAILER INSTALLED SECURITY SYSTEM

FUSES

IP BATT Fuse

Location: Underhood junction block

Type: 30A Maxifuse

Feeds: Circuit 1936

If one of the following systems is operating normally, the fuse is most likely good.

Headlamp switch

Dome lamp

Remote mirror switch

Map lights

Power door lock relay

Radio

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

IGN 4 Fuse

Location: Underhood junction block

Type: 30A Maxifuse

Feeds: Circuit 1932

If one of the following systems is operating normally, the fuse is most likely good:

Cluster

Windshield wipers

Radio

Turning signals

Hazard

Chime module

Passive restraint

Perf/Norm switch LED

Back-up lamp

Fuel injector(s)

Powertrain control module (PCM)

Distributorless ignition system (DIS)

Exhaust gas recirculation (EGR)

Auto trans relay

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

PARK Fuse

Location: I/P junction block

Type: 10A Minifuse

Feeds: Circuit 240

If the following system is operating, the fuse is most likely good:

All lighting (except for high/low beam headlamps)

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

IGN 1 Fuse

Location: I/P junction block

Type: 10A Minifuse

Feeds: 39, 39A, 39C, and Power Distribution

If one of the following circuits is operating normally, the fuse is most likely good:

Perf/Norm switch LED

Passive restraint control module

Instrument cluster

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

BODY Fuse

Location: I/P junction block

Type: 10A Minifuse

Feeds: Circuit 340, 340A, 340B, 340C, 34oF

If one of the following systems is operating normally, the fuse is most likely good:

Dome lamp

Cargo lamp switch

Remote mirror switch

Map Light

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

Security System Main Fuse

Location: Security system main harness

Type: 5A BUSS fuse

Feeds: Circuit 340XX

If the following system is operating normally, the fuse is most likely good:

Security system

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

Security System Park Fuse

Location: Security system main harness

Type: 20A BUSS fuse

Feeds: 340

If the following system is operating normally, the fuse is most likely good:

Security system parking lamp flash

If the fuse is blown, determine the cause of the blown fuse and repair.

Replace fuse as needed.

If this component is good, go to the next item indicated on the chart.

GROUNDS

Circuit 155:

Location: Connects security system module pin B5 to

Chassis ground at I/P H-Brace.

Type: Ring terminal

Check for OPENS/SHORTS. Check for proper torque at 13 mm bolt at left lower H -brace support (25 N.m [18 lbs. ft.1).

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 155ZZ

Location: Connects left body splice pack connector

cavity A to chassis ground point N.

Type: Black 18 gage wire.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

POWER CIRCUITS

Circuit 1936

Location: Connects the underhood junction block connector cavity A to the I/P junction block connector cavity F6.

Type: Red/White 14 gage wire.

Function: This circuit supplies battery voltage to the I/P junction block.

Check for OPENS/SHORTS.

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 1932

Location: Connects the underhood junction block connector cavity C to the Ignition switch connector cavity A.

Type: Red/Lt Green 14 gage wire

Function: This circuit supplies battery voltage to the Ignition switch.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 340

Location: Connects the I/P junction block connector cavity F7 to the Security system module connector cavity B1 through a 5A fuse and to the security system module connector cavity A8 through a 20A fuse.

Type: Red/Black 20 gage wire

Function: This circuit supplies fused battery voltage to the Security system module.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 39

Location: Connects I/P junction block connector cavity E2 to Security system module connector cavity A4.

Type: Yellow 20 gage wire

Function: This circuit supplies ignition voltage to the Security system module.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 953

Location: Connects Security system module connector cavity B6 to Security system valet switch connector cavity B.

Type: Black 20 gage wire.

Function: This circuit supplies a signal from the Security system valet switch to the Security system module to indicate the system mode.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 156 (Up-Level System Only)

Location: Connects I/P junction block connector cavity B3 to Security system module connector cavity Al.

Type: White 20 gage wire.

Function: This circuit provides a signal from the chime module to the Security system module to indicate that a door is open. This circuit also sends a signal from the Security system module to the chime module to activate the dome lamp.

Check for OPEN/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 156A (Up-Level system only)

Location: Connects I/P junction block connector cavity B3 to Dome lamp connector cavity A.

Type: White 22 gage wire.

Function: This circuit provides a signal from the chime module or the Security system module to activate the dome lamp.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 950

Location: Connects Security system module connector cavity A3 to negative side of LED.

Type: Green 20 gage wire.

Function: This circuit provides the negative path for the LED.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 951

Location: Connects Security system module connector cavity B2 to positive side of LED.

Type: Brown 20 gage wire.

Function: This circuit provides voltage to the positive side of the LED.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart. Circuit 194 (Up-Level System Only)

Location: Connects Security system module connector cavity A6 through a splice pack to door lock relay connector cavity A.

Type: Black 20 gage wire-1991 Black 22 gage wire - 1992 BLK/WHT 22 gage wire - 92 Mid - Year.

Function: This circuit supplies voltage to the unlock side of the interior door lock switches.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 195 (Up-Level System Only)

Location: Connects Security system module connector cavity A7 through a splice pack to door lock relay connector cavity F

Type: Lt Blue 20 gage wire - 1991 Lt. Blue 22 gage wire - 1992

Function: This circuit supplies voltage to the lock side of the interior door lock switches.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

Circuit 28/28C

Location: Connects Security system module connector cavity A5 through a splice pack to I/P junction block connector cavity A4.

Type: Black/Green 20 gage wire.

Function: This circuit provides voltage from the Security system module to activate the horn.

Check for OPENS/SHORTS

Repair as needed.

If this component is good, go to the next item indicated on the chart.

#### PARTS INFORMATION:

SATURN SCS MODEL PART PART YEAR PART DESCRIPTION USAGE NO. NO. ----- ---------------- ----- ------ ---- 91-92 Security System-Uplevel Locks, SI DR, Elec, 21070010 Key Activated (AB5) 91-92 Security System-Base 21070009

91-92 Transmitter-Security 21070203

91-92 Module, Electronic Locks, SI DR, Elec, 202-2495 Security-Uplevel Key Activated (AB5)

91-92 Module, Electronic 202-2494 Security-Base

91-92 Harness, Master-Uplevel Locks, SI DR, Elec, 203-6664 Key Activated (AB5)

91-92 Harness, Master-Base 203-6663

91-92 Bracket-Module Security 301-7078

91-92 Switch-Valet Security 470-6024

91-92 Battery-Transmitter Security 402-1004

To order SCS part, contact SCS customer service at:

(800) 433-1740 (800) 422-2910 (800) 772-2781 (Texas only)

To obtain replacements for defective parts, call SCS customer service to obtain Return Authorization (RA) number. Copy of RA will be faxed to the Retailer to include with shipment of defective part.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.