Locking all doors

Fig 1: Identifying Communication System - Locking All Doors

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Circuit Diagram - Locking All Doors

Courtesy of SAAB-SCANIA OF AMERICA, INC.

When the button is pressed, a microswitch closes and grounds pin 4, whereby pin 6 on TWICE is grounded.

A short voltage pulse (0.8 sec.) is output from pin 22 on the TWICE control module to the doors' electric motors, which locks the car.

The lock motors are grounded to the TWICE control module by

• pins 26 and 42, driver's door
• pins 69 and 66, passenger door
• pins 49 and 20, rear doors