Function, structure, operation of body, cab, accessories

1. Headlight system

This circuit comprises the headlights, ignition switch, lighting switch and passing switch on the combination switch, and BCM. When the lighting switch is turned ON in the headlight position, the headlight relay or BCM will be activated and the headlights will be illuminated. When the headlights are illuminated, the optical axis of the headlight can be faced upward and downward alternately using the lighting switch. The passing switch is not related to the position of the headlight switch. The optical axis will face upward only when the switch lever is being pulled up.

2. Clearance light system

This circuit comprises the clearance lights, ignition switch, lighting switch on the combination switch, and BCM. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated and the clearance lights will be illuminated.

3. Automatic headlight system

This circuit comprises the headlights, ignition switch, lighting switch on the combination switch, rain and light sensor, and BCM. When the lighting switch is turned to AUTO position, the BCM turns ON or OFF each light according to the brightness detected by the rain and light sensor.

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4. Fog light system

This circuit comprises the fog lights, ignition switch, lighting switch and fog light switch on the combination switch, and relays. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated. When the fog light switch is turned ON while keeping this state, the fog light relay will be activated and the fog lights will be illuminated.

5. Rear fog light system

This circuit comprises the rear fog lights, ignition switch, lighting switch and rear fog light switch on the combination switch, and relays. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated. When the rear fog light switch is turned ON while keeping this state, the rear fog light relay will be activated and the rear fog lights will be illuminated.

6. Turn signal light and hazard light system

This circuit comprises the turn signal lights, ignition switch, turn signal switch on the combination switch, hazard warning switch, and flasher unit or BCM. When the turn signal switch or hazard warning flasher switch is turned ON, the flasher unit or BCM will be activated and the turn signal lights will be illuminated. The turn signal lights are illuminated by the answer-back function of the keyless entry system, etc.

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7. Dome light system

This circuit comprises the dome light, door switches, BCM, etc. The BCM illuminates the dome light when the door switch is turned ON.

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8. Taillight and stoplight system

This circuit comprises the taillights, stoplights, ignition switch, lighting switch on the combination switch, stoplight switch, and BCM. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated and the taillights will be illuminated. The stoplights illuminate according to the operation of the stoplight switch.

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9. License plate light system

This circuit comprises the license plate lights, ignition switch, lighting switch on the combination switch, and BCM. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated and the license plate lights will be illuminated.

10. Illumination light system

This circuit comprises the illumination lights, ignition switch, lighting switch on the combination switch, and BCM. When the lighting switch is turned ON in the headlight or taillight position, the taillight relay or BCM will be activated and the illumination lights will be illuminated.

11. Backup light system

M/T models

This circuit comprises the backup lights and the backup light switch. When the backup light switch installed to the transmission is turned ON, the backup lights will illuminate.

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A/T models

This circuit comprises the backup light and inhibitor switch. When the inhibitor switch installed to the transmission is turned ON, the backup light illuminates.

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12. Bulb location diagram

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1. Windshield wiper and washer system

The wiper and washer system comprise the following units. The system is activated when the vehicle is running or the ignition switch is in the ON position.

The BCM controls the wiper low/high speed drive, the wiper intermittent or automatic drive, and the windshield washer linked drive of the wiper motor. The BCM detects that each wiper switch and the windshield washer switch are ON.

1) Windshield washer

When the windshield washer switch is turned ON, the washer motor will operate. Slightly later the BCM drives the wiper motor at a low speed.

2) Wiper intermittent drive

When the wiper switch is at the INT position, the BCM drives the wiper motor intermittently at low speed.

3) Wiper automatic drive

When the wiper switch is at the AUTO position, the BCM drives the wiper motor at proper speed according to the rainfall detected by the rain and light sensor and the vehicle driving speed.

4) Wiper low-speed drive

When the wiper switch is at the LO position, the BCM drives the wiper motor at low speed.

5) Wiper high-speed drive

When the wiper switch is at the HI position, the BCM drives the wiper motor at high speed.

1. Layout of switches

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1. Instrument panel cluster system

The following meters, gauges, warning lights, and indicator lights are assembled to the instrument panel cluster.

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These components cannot be replaced separately because they are integrated with the instrument panel cluster.
They communicate with control units such as the ECM, the TCM, the BCM, and the EHCU via CAN.

1) Speedometer

The speedometer indicates based on the signal output from the ECM. The ECM corrects the vehicle speed signal from the EHCU and sends it to the instrument panel cluster via CAN communication.

2) Tachometer

The tachometer indicates the engine speed based on the engine speed signal output from the ECM. The ECM detects the signal from the CKP sensor, and the engine speed signal is input to the instrument panel cluster via CAN communication.

3) Fuel gauge

The fuel gauge displays the remaining fuel level based on the signal output from the fuel tank unit. The fuel gauge displays the remaining fuel level as low when the resistance detected by the fuel tank unit is high.
The fuel gauge displays the remaining fuel level as high when the resistance detected by the fuel tank unit is low.

4) Engine coolant temperature gauge

The engine coolant temperature gauge displays the engine coolant temperature based on the engine coolant temperature signal output from the ECM. The ECM detects the engine coolant temperature signal from the engine coolant temperature sensor, and the signal is input to the engine coolant temperature gauge via CAN communication.

2. Warning light, indicator light

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3. Multi-information display (MID)

The multi-information display has the ability to display the following information. The trip knob operation enables the display switching and other operations.

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1) Full display

2) Display area 1

3) Display area 2

4) Display area 3

5) Display area 4

4. Navigation bar

When the MID mode R/L switch is pressed, the navigation bar is displayed on the multi-information display. The following can be selected on the navigation bar.

*1 Displayed only for 9 inch display equipped models.
*2 Displayed only when Manual is selected in the illumination mode.

1) Operation-Related Information Display (Trip Meter A/B)

The average fuel efficiency, instantaneous fuel efficiency, elapsed time, and average vehicle speed can be switched to display for TRIP A or TRIP B. If the odometer/trip meter indication is TRIP A, each data of interval A is displayed, and if it is TRIP B, each data of interval B is displayed. Each displayed data can be reset by pressing and holding the MID mode confirm switch.

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2) Eco graph display

The accelerator opening position and instantaneous fuel efficiency can be displayed.

3) Audio system linked display

The information from the audio system can be displayed.

4) Driving support system information display

Information on the preceding vehicle and lane detected by the stereo camera can be displayed.

Adaptive Cruise Control (ACC)

When the preceding vehicle is detected, the inter-vehicular distance with the preceding vehicle is displayed in 3 levels.

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Lane Departure Warning (LDW), Lane Departure Prevention (LDP), Lane Keep Assist System (LKAS)

Information on the recognized lanes is displayed. Also, the operational status of each system is displayed.

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Emergency Lane Keeping (ELK)

The operating states of the ELK are displayed.

5) Illumi level display

Only when the manual illumination mode is selected, this item is displayed on the MID. The instrument panel cluster and MID brightness can be separately adjusted in 6 levels.

6) Settings

The following meter settings can be changed.

5. Liquid crystal display (LCD)

The LCD has the ability to display the following information.
The trip knob operation enables the display switching and other operations.

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1) Display area 1

When the odometer is displayed on Display area 3, pressing and holding the trip knob can switch the following displays.

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2) Display area 2

3) Display area 3

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6. Gear shift indicator (GSI)

The gear shift indicator (GSI) is a function that assists fuel efficient driving. For manual transmission models, it shows the current and recommended gear positions on the display in the instrument panel cluster based on driving information (vehicle speed, engine speed, or clutch conditions, etc.) sent from the ECM or TCM to the instrument panel cluster via CAN communication.

1) Gear shift indicator (GSI) display

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2) Gear shift indicator (GSI) display method

When the possible travel distance is displayed on Display area 3, pressing and holding the trip knob can change it to one of the following 3 patterns.

1. Room mirror with automatic anti-glare function

The room mirror with automatic anti-glare function detects the surrounding brightness by each sensor and automatically activates the anti-glare function. When the ignition switch is ON and the automatic anti-glare mode is ON, day and night determination is performed based on the brightness detected by the ambient light sensor. If it is determined that it is daytime or the auto-glare mode is OFF, the automatic anti-glare function is not activated. If it is determined that it is nighttime, the automatic anti-glare function is activated when the light from the rear is brighter than the ambient light.

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By applying a voltage to the gel contained inside the mirror, the reflectivity of the mirror is adjusted to reduce glare. The reflectivity of the mirror is steplessly adjusted according to the difference between the amounts of light detected by the rear light sensor and the ambient light sensor.

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1. Instrument panel cluster system circuit diagram