Body Control Module: Description and Operation

Description

OUTLINE

The smart entrance control unit totally controls the following body electrical system operations.
- Heated steering
- Headlamp system
- Warning chime
- Rear defogger and door mirror defogger
- Power door lock
- Remote keyless entry system
- Vehicle security system
- Interior lamp

In addition, the following timer operations are controlled by the smart entrance control unit.
- Battery saver control
- Retained power control

BATTERY SAVER CONTROL

Headlamps/Parking Lamps/License Lamps/Tail Lamps/Fog Lamps/Illumination Lamps
While the headlamp is turned ON by 1st or 2ND step of light switch, the 5 minute timer is activated when the ignition switch signal changes from ON (or START) to OFF (ACC OFF). The headlamps (including parking, license, tail, fog and illumination lamps) are turned off after 5 minutes.

While the headlamp is turned ON by AUTO of light switch, the 5 minute timer is activated when the ignition switch signal changes from ON (or START) to OFF (ACC OFF), and either one of LH or RH front door switch ON signal is input.

The auto light delay off timer is activated as the following:
- When the door switch signal changes from ON to OFF while the timer is activated, the timer in operation is discontinued and the 45 second timer is reset.
- When the door switch signal changes from OFF to ON while the timer is activated, the timer is discontinued and the 45 second timer is reset.
- When the one of four door switch signals changes from OFF to ON while the timer is activated, the timer is discontinued and the 5 minute timer is reset.
- When all the door switch ON signals are input while the timer is activated, the timer is discontinued and the 45 second timer is reset.

Exterior lamp battery saver control mode and auto light delay off timer period can be changed by the function setting of CONSULT-II.

Interior Lamp/Spot Lamp/Vanity Mirror Illumination
The lamps turn off automatically when the interior lamp, spot lamp or/and vanity mirror illumination are illuminated with the ignition key in the OFF position, if the lamp remains lit by the door switch open signal or if the lamp switch is in the ON position for more than 30 minutes.

After lamps are turned off by the battery saver system, the lamps illuminate again when:
- Drivers door is locked or unlocked with keyfob, door lock/unlock switch or door key cylinder.
- Ignition switch is turned to ON.
- Door is opened or closed,
- Key is inserted into ignition key cylinder.

Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.

Rear Window Defogger/Door Mirror Defogger
Rear window defogger and door mirror defogger are turned off in approximately 15 minutes after the rear window defogger switch is turned on.

Heated Steering
Heated steering is turned off in approximately 30 minutes after the heated steering switch is turned ON.

RETAINED POWER CONTROL
When the ignition switch is turned to OFF (or ACC) position from ON or START position, the following systems can be operated for 45 seconds by the RAP signal from the smart entrance control unit terminal 46.
- Electric sunroof
- Power window

The retained power operation is canceled when the driver or passenger side door is opened. RAP signal period can be changed by CONSULT-II.

Input/Output Part 1:

Input/Output Part 2:

INPUT/OUTPUT