For 1990-2009 cars

### Circuit Operation

The audible warnings system is controlled by the multi-function alarm module. The audible warnings system sounds a chime in order to bring attention to the following conditions:

• | The key is in the ignition cylinder with the door open

• | The seat belt is not fastened

• | The headlamps are on with the door open

• | The turn signal is on with continuous operation after 1.2 km (3/4 mile)

The multi-function alarm also controls the battery run down protection feature.

### Key-in-Ignition Chime

Voltage is applied at all times to connector C2 terminal D of the multi-function alarm module through the INT LAMP fuse. When the key is in the ignition and the left front door opens, connector C1 terminal H and terminal E of the multi-function alarm module are grounded. This sounds the chime.

### Fasten Belts Chime

Voltage is applied through the ALARM fuse to connector C1 terminal M of the multi-function alarm module when the ignition switch is in the following positions:

• | RUN

• | BULB TEST

• | START

When the left front seat belt is unbuckled, connector C1 terminal K of the multi-function alarm is grounded through the seat belt switch. The fasten belts chime sounds for 4-8 seconds.

### Fasten Belts Indicator

The fasten belts indicator is controlled by the instrument panel cluster. Refer to Instrument Cluster System Check .

### Lamps-On Chime

The multi-function alarm module sounds the lamps-on chime under the following conditions:

• | Battery voltage at connector C1 terminal D indicates that the park lamps or the head lamps are on.

• | Zero volts at connector C1 terminal M indicates that the ignition switch is in one of the following positions:

- | OFF

- | ACCY

- | LOCK

• | Ground at connector C1 terminal H indicates that the left hand door is open.

### Turn Signal On Chime

When a turn signal is operated, voltage is applied to connector C1 terminal C. The multi-function alarm module monitors the vehicle distance at connector C1 terminal A. If the turn signal is still flashing after the vehicle has travelled 1.2 km (3/4 mile), then the turn signal chime sounds as the turn signal flashes.

### Battery Run Down Protection

The battery run down protection feature has 3 independent features:

• | Parasitic power control

• | Inadvertent power control

• | Courtesy lights control

#### Parasitic Power Control

The parasitic power control output of the multi-function alarm module supplies voltage to the radio. The output timer shuts off power to the radio when one of the following conditions occurs:

• | The vehicle travels for less than 25 km (15 miles) since the battery power was applied to the multi-function alarm module, and the vehicle is parked for 3 days following the last ignition cycle.

• | The vehicle travels for more than 25 km (15 miles) since the battery power was applied to the multi-function alarm module, and the vehicle is parked for 24 days following the last ignition cycle.

#### Inadvertent Power Control

The inadvertent power control output of the multi-function alarm module supplies voltage to the following lamps:

• | The courtesy lamps

• | The header lamps

• | The rear quarter lamps

• | The vanity mirror

• | The reading lamps

• | The IP compartment lamp

• | The luggage compartment lamp

Refer to Lighting Systems for diagnostic information.

#### Courtesy Lights Control

The courtesy lights control output of the multi-function alarm module supplies ground to the courtesy lamps and the dome lamps. Refer to Lighting Systems for diagnostic information.

### Power Output Diagnostic Mode

The power diagnostic mode in the multi-function alarm module can be used in order to run an inspection on the operation of the following outputs:

• | The parasitic power control

• | The courtesy lights control

• | The inadvertent power control

The power output diagnostic mode is activated after all of the following actions are performed:

• | The park brake is set.

• | The doors are closed.

• | The ignition switch is turned to RUN

| Perform the following actions before 15 seconds pass:

- | Open the right front door.

- | Cycle the headlamp switch from OFF to PARK 3 times.

During normal operation, the multi-function alarm module flashes the interior lamps until the ignition is turned off. If an internal short is found in the multi-function alarm module, the module chimes as follows:

• | One chime every 3 seconds.

| This indicates an inadvertent output failure

• | Two chimes every 3 seconds.

| This indicates a courtesy output failure.