Contents Section: Exterior Lights All sections

Lighting (Diagnostics - Introduction): Other Lexus GS III рестайлинг

Exterior Lights 18 illustrations ~852 words

PRECAUTION

  1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See procedure Theft Deterrent System Refer to «INITIALIZATION»(ref-386951-S21829001392011022400000) Intuitive Parking Assist System Variable Gear Ratio Steering System
  2. PRECAUTION OF HEADLIGHT BULB REPLACEMENT When any defect such as deformation, cracks, dents, chipping is identified on the discharge headlight (especially, on the light control ECU), replace it with a new one. Even if the operation seems to be normal, the fail-safe function may be defective. Since bulbs of the discharge headlight and halogen bulbs (for headlight and fog light) have pressurized gas inside and can easily be broken if scratched or dropped, special care should be taken. When handling the bulb, hold the plastic or metal part and do not touch the glass part with bare hands. Never touch the high voltage socket of the discharge headlight with the headlight dimmer switch ON, as this could generate 20,000 V and lead to a serious accident. Never connect a tester to the high voltage socket of the discharge headlight for measurement, as this may lead to a serious accident because of high voltage. When performing operations related to the discharge headlight, keep it away from water such as rain, turn off the light control switch, and disconnect the cable from the negative (-) battery terminal and the connector of the light control ECU in advance to avoid electric shock. When performing operations related to the discharge headlight, operate it after assembling has been finished and never operate it without a bulb installed. Only illuminate the discharge headlight using the vehicle's power source.

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Scheme 115: SYSTEM DIAGRAM

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CUSTOMIZE PARAMETERS

HINT

The following items can be customized.

Note. When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a mote of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting.

DisplayDefaultContentsSetting
I/L when ACC OFFONFunction to light the interior light when the power switch is operated from ON (IG or ACC) to OFFON / OFF
Lighting Time15sFunction to change the lighting time after closing the door. (It will quickly fade out in case of turning the power switch ON (IG))7.5s / 15s / 30s
Light ControlONFunction to light up step light and door inside handle light when the power switch is ON (IG) and shift position is not PON / OFF
I/L ON / UnlockONFunction to light the interior light, etc. when the door is unlocked with a transmitter, door key or door lock control switch.ON / OFF
Seat Light ControlAVAILFunction to light up the seat light when unlocking with the door key cylinderNOT AVL / AVAIL
Steering Light ControlAVAILFunction to light up the steering light when unlocking with the door key cylinderNOT AVL / AVAIL
Shift Light ControlAVAILFunction to light up the shift light when unlocking with the door key cylinderNOT AVL / AVAIL

ILLUMINATED ENTRY

HINT

Sensitivity adjustment can hardly be confirmed. Check by driving the customer's vehicle.

DisplayDefaultContentsSetting
Light Auto OFF Delay30sFunction to keep on lighting the headlight for a certain period of time after closing all the doors with the power switch turned from ON to OFF under the condition that the light control switch is at HEAD or AUTO with the headlight ONOFF / 30s / 60s / 90s
SensitivityNORMALFunction to adjust the sensitivity of lighting illumination*1.LIGHT2 / LIGHT1 / NORMAL / DARK1 / DARK2
Disp Ex ON SenNORMALChanges brightness when lowering lights such as combination meter indicator light, A/C indicator light, and clock light. Refer to the illustration*2.LIGHT2 / LIGHT1 / NORMAL / DARK1 / DARK2
Disp Ex OFF SenNORMALChanges brightness when lowering lights such as combination meter indicator light, A/C indicator light, and clock light. Refer to the illustration*3.LIGHT2 / LIGHT1 / NORMAL / DARK1 / DARK2
Foot Light Time (Driver's Side)*415sFunction to set how long foot light stays on (driver's side)OFF / 7.5s / 15s / 30s
Foot Light Time (Passenger's Side)*415sFunction to set how long foot light stays on (passenger's side)OFF / 7.5s / 15s / 30s
Foot Light Set upONFunction to light up foot lightON / OFF
DRL Function*ONDRL controlON / OFF

LIGHT CONTROL

HINT

*:Except Canada

ILLUSTRATION*1 Lighting Brightness Setting DARK2 DARK1 NORMAL LIGHT1 LIGHT2

ILLUSTRATION*2 Brightness of lowering the lights Setting DARK2 DARK1 NORMAL LIGHT1 LIGHT2

ILLUSTRATION*3 Brightness when canceling the lowering of the lights Setting DARK2 DARK1 NORMAL LIGHT1 LIGHT2

HINT

*4: When customizing the foot light, make sure the driver seat and front passenger seat are set to the same setting.

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  1. Door linked personal light illumination control Mode 1: When door is opened, personal light of opened door illuminates Mode 2: When door is opened, both front personal lights and rear personal lights illuminate Mode 3: Front personal lights and rear personal lights are not linked to doors To change modes, press the map light assembly DOOR and ON switch simultaneously, and then turn the power switch from off to on (IG). Each this operation will change the mode (Mode 1 --> Mode 2 --> Mode 3 --> Mode 1). HINT: After changing modes, the front personal lights respond by blinking as follows: Mode 1: once Mode 2: twice Mode 3: three times
  2. Map light assembly ON switch linked illumination control Mode 4: When map light assembly ON switch is pressed, front personal lights, rear personal lights, front seat lights and rear seat lights illuminate Mode 5: When map light assembly ON switch is pushed, front seat lights and rear seat lights illuminate To change modes, press the map light assembly ON, DOOR and OFF switches simultaneously, and then turn the power switch from off to on (IG). Each this operation will change the mode (Mode 4 --> Mode 5 --> Mode 4). HINT: After changing modes, the front personal lights responds by blinking as follows: Mode 4: four times Mode 5: five times

FAIL-SAFE CHART

  1. FAIL-SAFE Light control ECU The light control ECU executes the fail-safe actions listed below in accordance with the item that has been detected. Item Outline Detection of Abnormal Input Voltage If voltage that is input to light control ECU deviates from operating voltage (9 to 16 V), ECU stops illuminating headlights, and resumes illuminating headlight when voltage reverts to operating voltage range However, if input voltage decreases after headlights have illuminated, headlight will remain illuminated until bulbs are extinguished Detection of Abnormal Output (open or short circuit) or Flashing Bulb If abnormal condition (open or short circuit) occurs in voltage that is output by light control ECU, or if bulb flashes, ECU stops illuminating headlights and will maintain this state until power is reinstated (by turning headlight control switch from ON or OFF) Detection of Bulb Open If bulb is not inserted in its socket, ECU stops generating high voltage until bulb is inserted correctly and power is reinstated by turning headlight control switch from OFF to ON or turning power switch from OFF to ON (IG)