Power Locks: Description and Operation

The Automatic Door Lock (ADL) System is controlled by the Automatic Door Lock Module. The Automatic Door Lock Module will send a Battery voltage signal to the "LOCK" (CKT 195) or "UNLOCK" (CKT 194) coils in the Door Lock Relay when certain conditions are present.

Lock
The Automatic Door Lock Module will lock all doors when the following conditions are present:
1. Ignition Switch in "ON" position.
2. Driver's door and sliding door closed.
3. Transaxle shifted out of the "PARK" position.

If the driver's door is open when the Transaxle is shifted out of the "PARK" position, the doors will not lock and will remain unlocked even after the driver's door is closed until the system is reset. The system reset occurs with the Transaxle in the "PARK" position, and the Ignition "ON."

If the Sliding Door is open when the Transaxle is shifted out of the "PARK" position, all doors will lock immediately. All doors will lock again 5 seconds after the Sliding Door is closed.

Unlock
When the LH or RH Key Lock Switch is turned to the "UNLOCK" position, a switched ground signal is provided to the Automatic Door Lock Module. The Automatic Door Lock Module will then apply battery voltage through CKT 194 to the "UNLOCK" coil in the Door Lock Relay, unlocking all doors.

RH And LH Door And Liftgate Lock Actuators
Voltage is applied at all times through the PWR ACCY Circuit Breaker to the Door Lock Relay. Voltage is applied at all times to the Door Lock Switches and Key Lock Switches from the CTSY Fuse. When either Door Lock Switch is pushed to "LOCK," voltage is applied through CKT 195 to the Door Lock Relay. The relay energizes, the contacts close and voltage is applied to the RH and LH door and Liftgate Lock Actuators through CKT 295. The actuators are grounded at G200 through CKT 294, the switch contacts of the Unlock Relay and CKT 150. When a Door Lock Switch is pushed to "UNLOCK" or Key Lock Switch closed, voltage is applied through CKT 194 to the Door Lock Relay. The relay energizes, the contacts close and voltage is applied in reverse to the Door Lock Actuators through CKT 294. The actuators are grounded at G200 through CKT 295, the switch contacts of the Door Lock Relay and CKT 150.

Sliding Door Lock Motor
The Sliding Door Lock Actuator will not operate when the Sliding Door is open. The RH "B" pillar contains a striker plate and the Sliding Door contains plunger contacts. When the switch is closed, CKT 294 and CKT 295 are connected to the Sliding Door Lock Actuator allowing normal operation. When the Switch is open (Sliding Door open), CKT 294 and CKT 295 are disconnected from the Sliding Door Lock Actuator, preventing it from energizing.

The Sliding Door Lock Actuator functions as described with the RH and LH door and Liftgate Lock Actuators when the Sliding Door is closed and a "LOCK" or "UNLOCK" operation takes place.