Keyless Entry: Description and Operation

REMOTE KEYLESS ENTRY SYSTEM
System Description

INPUTS
Power is supplied at all times
- to BCM terminal 7
- through 50 A fusible link (letter F located in the fuse and fusible link box).
- to key switch terminal 2
- through 10 A fuse (No.21 located in the fuse and fusible link box).

When the key switch is ON (key is inserted in ignition key cylinder) power is supplied
- to BCM terminal 62
- through key switch terminal 1.

When the ignition switch is ACC or ON power is supplied
- to BCM terminal 36
- through 10 A fuse [No.6. located in the fuse block (J/B)].

When the ignition switch is ON or START power is supplied
- to BCM terminal 35
- through 10 A fuse [No.1 located in the fuse block (J/B)].

When the driver side door switch is ON (door is OPEN) ground is supplied
- to BCM terminal 14
- through driver side door switch terminal 1
- through driver door switch case ground.

When the driver side door switch is ON (door is OPEN) ground is supplied (with navigation system)
- to combination meter terminal 7
- through driver side door switch terminal 1
- through driver door switch case ground.

When the passenger side door switch is ON (door is OPEN) ground is supplied
- to BCM terminal 10
- through passenger side door switch terminal 1
- through passenger side door switch case ground.

When the passenger side door switch is ON (door is OPEN) ground is supplied (with navigation system)
- to combination meter terminal 6
- through passenger side door switch terminal 1
- through passenger side door switch case ground.

When the trunk room lamp switch is ON (trunk is OPEN) ground is supplied
- to BCM terminal 18
- through the trunk room lamp switch terminal 1 and 2
- through body grounds B402, B413.

Key fob signal is inputted to BCM (the antenna of the system is combined with BCM).

The remote keyless entry system controls operation of the
- power door lock
- hazard and horn reminder
- auto door lock
- map lamp and ignition keyhole illumination
- panic alarm
- trunk lid opener
- keyless power window down (open)

OPERATED PROCEDURE
BCM can not receive signals from key fob when key switch is ON (except keyless power window down signal).

Power Door Lock Operation
BCM receives a LOCK signal from key fob. BCM locks all doors with input of LOCK signal from key fob.

When an UNLOCK signal is sent from key fob once drivers door will be unlocked.

Then if an UNLOCK signal is sent from key fob again within 5 seconds all other door will be unlocked.

Hazard and Horn Reminder
When the doors are locked or unlocked by key fob supply power to hazard warning lamp flashes as follows
- LOCK operation: C mode (flash twice) or S mode (flash twice)
- UNLOCK operation: C mode (flash once) or S mode (does not flash)

BCM outputs to IPDM E/R for horn reminder signal as DATA LINE (CAN H line and CAN L line).

The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).

Operating function of hazard and horn reminder
Hazard and horn reminder does not operate if any door switches are ON (any doors are OPEN)

How to change hazard and horn reminder mode
With CONSULT-II
Hazard and horn reminder can be changed using WORK SUPPORT" mode in "MULTI ANSWER BACK SET".
Refer to "Work Support".
Work Support

Without CONSULT-II
When LOCK and UNLOCK signals are sent from the key fob for more than 2 seconds at the same time, the hazard and horn reminder mode is changed and hazard warning lamp flashes and horn sounds as follows:

Auto Door Lock Operation
Auto lock function signal is sent for operation when any of the following signals are not sent within 1 minute after the unlock signal is sent from the key fob:
- when door switch is turned ON for open.
- when the key switch is turned ON.
- when the lock signal is sent from the key fob.

Auto door lock mode can be changed using WORK SUPPORT" mode in "AUTO LOCK SET".
Refer to "Work Support".
Work Support

Map Lamp and Keyhole Illumination Operation
When the following conditions come:
- condition of map lamp switch is DOOR position;
- door switch OFF (when all the doors are closed);

Remote keyless entry system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from key fob.

Panic Alarm Operation
When key switch is OFF (when ignition key is not inserted in key cylinder) BCM turns on and off horn and headlamp intermittently with input of PANIC ALARM signal from key fob.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob.
Panic alarm operation mode can be changed using WORK SUPPORT" mode in "PANIC ALARM SET".

Refer to "Work Support".
Work Support

For detailed description, refer to "VEHICLE SECURITY (THEFT WARNING) SYSTEM".

Trunk Lid Opener Operation
When a TRUNK LID OPEN signal is sent with key switch OFF (key removed from ignition key cylinder) from key fob, power is supplied to BCM terminal 19.

When power and ground are supplied, trunk lid opener actuator opens trunk lid.

Trunk lid opener operation mode can be changed using "WORK SUPPORT" mode in "TRUNK OPEN SET".

Refer to "Work Support".
Work Support

Keyless Power Window Down (open) Operation
When key fob unlock switch is turned ON with ignition switch OFF, and key fob unlock switch is detected to be on continuously for 3 seconds, the drivers door and passengers door power windows are simultaneously opened.

Power window is operated to open and the operation continues as long as the key fob unlock switch is pressed.

Keyless power window down operation mode can be changed using "WORK SUPPORT" mode in "PW DOWN SET".

Refer to "Work Support".
Work Support

TYPE 1:

TYPE 2:

CAN Communication System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability.

Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.