EXTERIOR LAMPS

CONSTRUCTION DIAGRAM

As for the headlamp assembly, projector type low-beam has been adopted. It employs the four-lamp integrated with the front turn-signal lamp and position lamp.
Uncut lenses have been adopted to the headlamp lens for an improved appearance.
The discharge headlamp for low-beam provides a much better view than ordinary halogen lamps. <Standard: Vehicles for Russia and 3800, Option: Except for Russia and 3800)>
For the low-beam of the headlamp, the headlamp manual levelling system <Vehicle with halogen headlamp> (Refer to .) and the headlamp automatic levelling system <Vehicle with discharge headlamp> (Refer to .) have been adopted so that the height adjustment of the optical axis can be performed depending on the vehicle posture.
The front fog lamp with no-cut lens has been adopted for better appearance. <Standard: GLS, Option: GLX>
Two types of the side turn-signal lamp have been established: the one attached to the fender panel <GLX> and the one integrated into the door mirror <Standard: GLS, Option: GLX>.
The approach lamp which illuminates the foot area when getting on/off has been integrated into the door mirror. <Standard: GLS, Option: GLX> has been established.

The rear combination lamp assembly are integrated with the stop/tail lamp, back-up lamp and turn-signal lamp.

note

When the tail and turn lamp assembly which is optionally available for vehicles for England has been adopted, the turn-signal lamp inside the rear combination lamp assembly will not be installed.

For the rear bumper, the tail and turn lamp assembly integrated with the tail lamp and turn-signal lamp has been attached. <Option: vehicles for England>
On the upper area of the tailgate window glass, the high-mounted stop lamp has been attached.
To the back door licence plate garnish, the licence plate lamp and rear fog lamp have been installed.
The lighting system is provided with auto lamp function (Refer to ), headlamp automatic-shutdown function and daytime running lamp function (Refer to ).
For the flasher timer function of turn-signal, the comfort flasher function has been adopted to improve the operability when changing lanes. When the turn-signal lamp switch (lighting switch) is operated for a short time, this function flashes the turn-signal lamp of the operated direction three times (Refer to ).

Specifications

Item
Headlamp assembly vehicles without discharge headlamp	High-beam W (Halogen headlamp)	65 (H9)
	Low-beam W (Halogen headlamp)	55 (H11)
	Position lamp W	5 (W5W)
	Front turn-signal lamp W	21 (WY21W)
Headlamp assembly vehicles with discharge headlamp	High-beam W (Halogen headlamp)	65 (H9)
	Low-beam W (Discharge headlamp)	35 (D2S)
	Position lamp W	5 (W5W)
	Front turn-signal lamp W	21 (WY21W)
Front fog lamp W		55 (H11)
Rear fog lamp W		21 (W21W)
Side turn-signal lamp	Fender panel attachment type W	5 (W5W)
Side turn-signal lamp	Door mirror incorporated type	LED type
Approach lamp W		5 (W5W)
Rear combination lamp assembly	Stop/tail lamp W	21/5 (W21/5W)
	Back-up lamp W	21 (W21W)
	Rear turn-signal lamp W	21 (WY21W)
Tail and turn lamp assembly <Option: vehicles for England>	Tail lamp W	5 (W5W)
Tail and turn lamp assembly <Option: vehicles for England>	Rear turn-signal lamp W	21 (WY21W)
High-mounted stop lamp	Vehicles for Europe (Except 3800)	LED type
High-mounted stop lamp	Vehicles for Russia and 3800 W × quantity	18 (W16W) × 3
Licence plate lamp W		5 (W5W)

note

The brackets ( ) show the bulb type.

HEADLAMP MANUAL LEVELLING SYSTEM

The beam direction of the headlamps changes according to the number of passengers and the amount of load. The headlamp manual levelling function is a system that allows the driver to change the direction of headlamp beam so that the drivers of oncoming cars are not dazzled by the headlamps. The headlamp levelling switch allows changing the direction in five steps: 0 to 4.

RELATIONSHIP BETWEEN THE SWITCH POSITIONS AND THE NUMBER OF PASSENGERS/LOADS

<SHORT WHEELBASE>

Switch position	0	2	3	4
Passenger and load
Passenger and load	One or two passengers	Five passengers	Five passengers and heavy loads	Driver and heavy loads

<LONG WHEELBASE>

Switch position	0	1	2	3	4
Passenger and load
Passenger and load	One or two passengers	Four passengers (front seat and third seat)	Seven passengers	Seven passengers and heavy loads	Driver and heavy loads

note

Each switch position is for reference. In each switch position, when the headlamp beam is too high, turn the switch to one-level higher position.

OPERATION

1.The headlamp levelling switch increases the resistance as it is turned from 0 to 4. Turning the headlamp levelling switch changes the voltage at point A. When the headlamp levelling switch is turned from 0 to 4, the voltage at point A decreases. Upon detection of this voltage change, the headlamp levelling unit turns the motor to lower the beam direction. At this time, the resistance of the variable resistor in the headlamp assembly changes, and the voltage at point B decreases gradually. When the voltages at points A and B become equal, the headlamp levelling unit stops the motor.
2.Turning the headlamp levelling switch from 4 to 0 increases the voltage at point A, and then the headlamp levelling unit turns the motor in the direction opposite to that mentioned in Item 1, increasing the voltage at point B. When the voltages at points A and B become equal, the headlamp levelling unit stops the motor.
3.The headlamp levelling unit detects voltage changes caused by headlamp levelling switch operation, and turns the motor to change the directions of the headlamp reflectors for the adjustment of the headlamp beam direction.

HEADLAMP AUTOMATIC LEVELLING SYSTEM

The beam direction of the headlamps (vertical angle) changes according to the number of passengers and the amount of load. The headlamp automatic levelling system is a system that automatically controls the beam direction of headlamps so that the drivers of oncoming cars are not dazzled by the headlamps if the beam direction of the headlamp upwards when parking or travelling at a constant speed.

FUNCTION

The beam direction of headlamps is automatically controlled according to driving conditions as described in the table below.

Vehicle condition	Control content
When parking	The headlamp automatic levelling-ECU calculates the vehicle pitch angle from the height sensor values according to the change in load resulting from getting on/off or loading/unloading to control the beam direction.
When driving at a constant speed	When a vehicle starts on curb, the travelling vehicle posture changes from the posture during parking, so that the beam direction changes. To control the improper beam direction caused by such vehicle posture change, the headlamp automatic levelling-ECU calculates the vehicle pitch angle based on the average of height sensor values obtained for 12 seconds after the vehicle speed becomes constant. This beam direction control while driving at a constant speed is performed only once between a vehicle stop and the next stop. If driving is started at a constant speed on the gravel or rough road, to prevent unnecessary control resulting from detection of road uneven surface, the beam direction control is launched after the driving speed becomes constant on pavement.

CONSTRUCTION DIAGRAM

SYSTEM COMPONENT AND FUNCTION

Parts name	Functional description
Column switch (lighting switch)	When the lighting switch is set to the headlamp position, the headlamp relay (LO) inside the front-ECU turns ON to transmit the signal to the headlamp automatic levelling-ECU.
Front-ECU
Height sensor (front)	Detects the elongation/contraction of the front suspension and transmits the signal to the headlamp automatic levelling-ECU.
Height sensor (rear)	Detects the elongation/contraction of the rear suspension and transmits the signal to the headlamp automatic levelling-ECU.
Vehicle speed sensor	Transmits vehicle speed signals to the headlamp automatic levelling-ECU.
Headlamp assembly (integrating motor)	Drives the headlamp reflector by receiving signals from the headlamp automatic levelling-ECU.
Headlamp automatic levelling warning lamp	Located in the combination meter. Lights up for warning when an abnormality occurs in the headlamp automatic levelling system.
Headlamp automatic levelling-ECU	Controls the motor integrated in the headlamp assembly based on the signals form switches and sensors to control the beam direction according to the vehicle posture.
Diagnosis connector	Outputs diagnosis codes.

SYSTEM BLOCK DIAGRAM

FAIL-SAFE FUNCTION

Trouble spot	Trouble condition	Headlamp automatic levelling warning lamp	Countermeasures for trouble
Height sensor	Open or short circuit	ON	Control stop
Vehicle speed signal	Open or short circuit	-	Continues control when parking
Motor (integrated in headlamp assembly)	Open circuit	-	Control stop
Motor (integrated in headlamp assembly)	Short	ON	Control stop
Headlamp automatic levelling-ECU	Open or short circuit	-	Control stop
Headlamp automatic levelling-ECU	ECU is out of control	-	Program reset by ECU self-diagnosis
Headlamp signal	Open or short circuit	-	Control stop

AUTO LAMP FUNCTION

The auto lamp function automatically turns ON/OFF the headlamp and tail lamp according to the headlamp (low-beam) and tail lamp illumination request signals which are sent from the lighting control sensor (lamp sensor) to the front-ECU via the CAN converter-ECU, when the ignition switch is in the "ON" position and the lighting switch is in the "AUTO" position.
The lamp sensor and the rain sensor are incorporated into the lighting control sensor. The lamp sensor is used for the auto lamp function, and the rain sensor for the rain sensitive wiper function ^*.

note ^*: For the rain sensitive wiper function, refer to GROUP 51, Windshield Wiper and Washer .
The lighting control sensor (lamp sensor) detects the front and surrounding brightness of the vehicle. With this detection, it is judged that the vehicle enters a tunnel or just drives under a bridge. When it is judged that the vehicle drives through a tunnel, the headlamp and tail lamp are automatically turned ON. When it is judged that the vehicle drives under a bridge, the headlamp and tail lamp are not turned ON automatically. When the vehicle surroundings get dark in case such as evening, the headlamp and tail lamp are automatically turned ON.
The timing that the headlamp and tail lamp are automatically turned ON when the vehicle surroundings get dark in case such as evening can be adjusted by the customise function. (Refer to Customise Function .)