KEYLESS ENTRY SYSTEMS

1
KEYLESS ENTRY SYSTEMS

• CHAPTER 14
• PAGES 513C - 518C
• PAGES 544L - 549L

2
MAIN COMPONENTS

• CONTROL MODULE
• CODED BUTTON KEY PAD
• DOOR LOCK MOTORS

3
SYSTEM FUNCTIONS

• UNLOCKS ALL DOORS WHEN 3-4 BUTTON IS PRESSSED
  WITHIN 5 SECONDS AFTER CODE ENTERED
• RELEASES TRUNK LID
• ACTIVATES ILLUMINATED ENTRY
• OPERATES IN CONJUNCTION WITH AUTOMATIC LOCKS
  SYSTEM

4
KEY MODULE

• Controls all functions for Keyless and Autolock
  systems
• Located in Trunk on Fords
• On newer cars, built into BCM
• Code usually on module itself.

5
KEYPAD

• FIVE NORMALLY OPEN SINGLE POLE, SINGLE THROW
  SWITCHES
• EACH PAD REPRESENTS TWO NUMBERS
• LOCATED ON DRIVERS DOOR
• PROVIDES INPUT TO CONTROL MODULE

CLASS 513
6
LOCK MOTOR

• USES EITHER SOLENOID OR PERMANENT MAGNET
  REVERSIBLE MOTOR
• MODULE CONTROLS PM LOCK MOTORS BY REVERSING
  CURRENT

CLASS 363
7
REMOTE OPERATION

• TRANSMITTER
• RECEIVER BUILT INTO MODULE
• ANTENNA
• SOMETIMES USED WITH ALARM SYSTEM

LAB 549
8
SYSTEM DIAGNOSIS

• INSURE WHAT SYSTEM YOU HAVE
• CHECK BASIC LOCK SYSTEM FIRST
• ROLL DOWN WINDOWS OR KEYS IN POCKET
• PERFORM FACTORY FUNCTION TEST
• HIDDEN CODE SOMETIMES ON CONTROLLER MODULE

LAB 548
9
FUNCTION TEST

• Unlock and lock doors using lock switches
• Illuminate Keypad
• Lock doors using keypad
• Unlock Drivers door using permanent Code
• Unlock passenger doors using 3/4 key
• Unlock luggage using 5/6 key
• Check for Auto Lock function (Through reverse
  gear)
• Open and close drivers door to check Autolock
• Open drivers door, key on, trans in drive, turn
  off courtesy lights with door switch using left
  foot

Contd on next slide
10
FUNCTION TEST (CONTD)

• Key off, trans in park, get out of car, close
  door Press Keypad to turn on illuminated entry.
• While illuminated entry is on, press 7/8 and 9/0
  simultaneously within 5 seconds of turning on the
  illuminated Entry system
• Key off, transmission in Park, door closed, lift
  handle to open door, within 25 seconds, get
  inside car and turn ignition switch on
• Enter Permanent code, within 5 seconds, push 1/2
  (this tells module to accept a alternate code)
• Unlock all doors using alternate code
• Disable alternate code. (Follow procedure)

11
CHECK INPUTS AND OUTPUTS
INPUTS
OUTPUTS

• Door Handles
• Drivers seat sensor
• Transmission back up light switch
• Ignition Switch
• Electric door lock/unlock switches
• Keypad
• Courtesy Light Switch
• Door ajar switch

• Keypad illumination
• Door lock actuating solenoid/motor
• Trunk lid release solenoid
• Interior courtesy lights

LAB 547
12
SYSTEM DIAGRAM