For 1990-2009 cars

### Automatic Door Lock Features

The body control module (BCM) controls the automatic door locks. One of three BCM types is installed on this vehicle based on vehicle equipment:

• | BCM type 2 provides automatic power door locks, plus interior illumination control, inadvertent load (battery rundown) protection, and chime functions.

• | BCM type 3 provides BCM type 2 features plus the keyless entry system (RPO AU0).

• | BCM type 4 provides BCM type 2 and 3 features plus the content theft deterrent system (RPO UA6) with remote activation verification and remote alarm.

The BCM type 2 has these automatic door lock features:

• | All door unlock: The BCM unlocks all doors when pressing UNLOCK on either door lock switch.

• | All door lock: The BCM locks all doors when pressing LOCK on either door lock switch.

• | Last door closed locking: When pressing LOCK on either door lock switch with the ignition switch in the LOCK or OFF position, the BCM locks all doors five seconds after closing all vehicle doors.

• | Lockout prevention: When pressing LOCK on either door lock switch with the key in the ignition cylinder and the driver's door is open, the BCM does not lock the doors.

• | Lockout prevention override: When pressing and holding LOCK on either door lock for at least three seconds, the BCM overrides the lockout prevention thus locking all doors.

• | Ignition OFF unlock: When turning the ignition switch from RUN to OFF, the BCM unlocks all vehicle doors.

• | Shift into PARK unlock: When shifting the transaxle into PARK, the BCM unlocks all vehicle doors.

• | Shift out of PARK lock: When shifting the transaxle out of PARK with the driver's door closed, the BCM locks all vehicle doors.

• | Sliding door delayed locking: The BCM locks all doors three seconds after closing sliding door(s).

The BCM type 3 (RPO AU0) has these automatic door lock features (in addition to BCM type 2 features):

• | Remote driver door unlock: The BCM unlocks the driver's door when pressing UNLOCK on the keyless entry transmitter.

• | Remote all door unlock: The BCM unlocks all vehicle doors when pressing UNLOCK on the keyless entry transmitter again within five seconds of pressing UNLOCK.

• | Remote all door lock: The BCM locks all vehicle doors when pressing LOCK on the keyless entry transmitter.

The BCM type 4 (RPO UA6) has this automatic door lock feature (in addition to BCM type 2 and 3 features):

• | Key cylinder unlock: When unlocking a door by using the left front, right front or liftgate door key cylinder, the BCM unlocks all vehicle doors while holding the key in the unlock position for one second.

• | Key cylinder lock: When locking a door by using the left front, right front or liftgate door key cylinder, the BCM locks all vehicle doors while holding the key in the lock position for one second.

For more information regarding the keyless entry system refer to KEYLESS ENTRY section; the content theft deterrent refer to THEFT DETERRENT SYSTEM section; and the BCM refer to BODY CONTROL MODULE section.

### All Door Unlock

The BCM unlocks all doors when pressing UNLOCK once on either door lock switch. Note: the BCM does not unlock the doors when the content theft deterrence (RPO UA6) is armed.

Pressing UNLOCK on either door lock switch sends a ground signal to the BCM through CKT 194. This action cause the BCM to apply voltage in CKTs 694 and 294 for 350 (+/- 35) ms, energizing all door lock actuator motors and unlocking all vehicle doors. The BCM grounds door lock actuator motors through CKT 295.

### All Door Lock

• | The BCM locks all doors when pressing LOCK once on either door lock switch with all doors closed.

• | The BCM delays door locking when the driver's door is open with the key removed from the ignition switch, thus enabling the last door closed locking feature. A first press of LOCK on a door lock switch initiates this feature. This causes the BCM to sound the chime 3 times, indicating last door closed locking is active. Five seconds after all doors are closed, the BCM locks all doors. Pressing LOCK twice on a door lock switch bypasses the last door closed locking feature, thus the BCM locks all doors immediately with a door still open.

• | The BCM does not lock the doors when the driver's door is open and the key is fully inserted in the ignition switch, thus enabling the lockout prevention feature.

Pressing LOCK on either door lock switch sends a ground signal to the BCM through CKT 195. When the BCM deems appropriate to lock the doors (based on last door closed locking and lockout prevention features) the BCM applies voltage to CKT 295 for 350 (+/- 35) ms, energizing all door lock actuator motors and locking all vehicle doors. The BCM grounds door lock actuator motors through CKT 294.

### Last Door Closed Locking

The BCM activates the last door closed locking feature when these conditions are met:

• | Locking control mode 3 or 4 is enabled. Refer to Automatic Door Lock Feature Customization in this section for details.

• | Open vehicle door (open signal in CKT 49, CKT 54, and CKT 159).

• | The key removed from the ignition switch, thus disabling lockout prevention (open signal in CKT 80).

• | Pressing LOCK once on a door lock switch or keyless entry transmitter (if equipped with RPO AU0).

Upon pressing LOCK, the BCM to sound the chime 3 times. This provides feedback indicating that the last door closed locking feature is active, 5 (+/- 0.5) seconds after all doors are closed, the BCM locks all doors.

To cancel this feature:

• | Press UNLOCK on a door lock switch, or keyless entry transmitter (if equipped).

• | Turn the ignition switch to the ACC or RUN position.

To override this feature: Press LOCK twice. The BCM locks all doors immediately with a door still open.

### Lockout Prevention

The BCM does not lock the vehicle doors when pressing LOCK on either door lock switch with the lockout prevention feature active. The BCM activates the lockout prevention feature when these conditions are met:

• | The driver's door is open (ground signal in CKT 159).

• | The key is fully inserted in the ignition switch cylinder (ground signal in CKT 80).

When the lockout prevention feature is active, the BCM disables the automatic door lock features:

• | All door lock.

• | Last door closing locking.

• | Key cylinder unlock.

• | Keyless entry system unlock (if equipped with RPO AU0).

### Lockout Prevention Override

To override the lockout prevention feature, press and hold LOCK on door lock switch for three seconds or press LOCK on right front door lock switch twice. This action causes the BCM to lock all doors immediately.

### Ignition Off Unlock

The BCM unlocks the doors when these conditions are met:

• | Automatic door lock operation mode 3 is enabled. Refer to Automatic Door Lock Feature Customization in this section for details.

• | Shifting the transaxle into PARK (BCM detects and open to B+ transition signal in CKT 1872).

• | Turning the ignition switch from RUN to LOCK or OFF position.

### Shift into PARK Unlock

The BCM unlocks the doors when these conditions are met:

• | Automatic door lock operation mode 4 is enabled. Refer to Automatic Door Lock Feature Customization in this section for details.

• | The ignition switch is in the RUN position.

• | Shifting the transaxle into PARK (BCM detects and open to B+ transition signal in CKT 1872).

### Shift Out of PARK Lock

The BCM locks the doors when these conditions are met:

• | Automatic door lock operation mode 2, 3 or 4 is enabled. Refer to Automatic Door Lock Feature Customization in this section for details.

• | The driver's door is closed (open signal in CKT 159).

• | The ignition switch is in the RUN position.

• | Shifting the transaxle into PARK (BCM detects and open to B+ transition signal in CKT 1872).

### Sliding Door Delayed Locking

The BCM initiates the sliding door delay locking feature when pressing lock on either door lock with a sliding door open, on one of these conditions is met:

• | The ignition switch in ACC or RUN position.

• | The ignition switch in LOCK or OFF position and the last door closed locking feature is disabled.

• | The ignition switch in LOCK or OFF position and the lockout prevention override feature is enabled.

In addition, the BCM initiates the sliding door delay locking feature when the shift out of PARK lock feature is active with a sliding door open.

When the sliding door delayed locking feature is initiated (see criteria above), the BCM locks all doors three seconds after closing sliding door(s). The BCM to apply voltage in CKT 295 for 350 (+/- 35) ms, energizing all door lock actuator motors and locking all vehicle doors. The BCM grounds door lock actuator motors through CKT 294.

### Sliding Door Delayed Locking Override

The BCM locks all doors when pressing lock on either door lock switch or keyless entry transmitter during the three second delay period. This action overrides the sliding door delay locking feature. However, the BCM will not lock doors if the lockout prevention is active.

If a sliding door was open at the time the BCM locks all doors (override feature activated), the BCM initiates the sliding door delay locking feature after closing sliding door(s).

### Sliding Door Delayed Locking Cancellation

The BCM cancels the sliding door delay locking feature when pressing unlock on either door lock switch or keyless entry transmitter.

When opening a sliding door during the three second delay period, the BCM cancels the sliding door delay locking feature and waits for sliding door(s) to close again. When closing sliding door(s), the BCM re-initiates the sliding door delay locking feature.

### Key Cylinder Unlock (RPO UA6)

When unlocking the left front, right front or liftgate door key cylinder, the BCM unlocks all vehicle doors while holding the key in the unlock position.

Unlocking door using key cylinder lock sends a ground signal to the BCM through CKT 781. Holding the key in the unlock position for one second causes the BCM to apply voltage in CKT 694 and CKT 294 for 350 (+/- 35) ms, energizing all door actuators and unlocking all vehicle doors.

### Key Cylinder Lock (RPO UA6)

When locking the left front, right front or liftgate door key cylinder, the BCM locks all vehicle doors.

Locking door using key cylinder lock sends a ground signal to the BCM through CKT 780. Holding the key in the lock position for one second causes the BCM to apply voltage in CKT 295 for 350 (+/- 35) ms, energizing all door actuators and locking all vehicle doors.

### Courtesy Lights

#### Illuminated Entry

The BCM turns on the courtesy lights when unlocking the left front, right front, or liftgate door using door cylinder lock (BCM type 4 only). Refer to Lighting System for more information.

#### Delayed Illumination

The delayed illumination feature is canceled when pressing LOCK on a door lock switch or a keyless entry transmitter. Refer to Lighting System for more information.