Lexus ES300 (1997 year). Manual — part 106
Z08559
2
1
3
4
4
3
2
1
BE1838
BE1840
N21565
N21566
BE–30
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
1414
1997 LEXUS ES300 (RM511U)
12.
INSPECT DAYTIME RUNNING LIGHT NO.3 RELAY
CIRCUIT
(See page
)
13.
INSPECT DAYTIME RUNNING LIGHT NO.4 RELAY
CONTINUITY
Condition
Tester connection
Specified condition
Constant
3 – 4
Continuity
Apply B+ between
terminals 3 and 4.
1 – 2
Continuity
If continuity is not as specified, replace the relay.
14.
INSPECT DAYTIME RUNNING LIGHT NO.4 RELAY
CIRCUIT
(See page
)
15.
INSPECT LIGHT AUTO TURN OFF SYSTEM
(See Integration relay circuit on page
)
16.
Auto ON:
INSPECT AUTOMATIC LIGHT CONTROL
(a)
Turn the ignition switch ON.
(b)
Turn the light control switch to AUTO.
(c)
Gradually cover the top of the sensor.
(d)
Verify that the accessory lights and the headlights turn
ON.
17.
Auto OFF:
INSPECT AUTOMATIC LIGHT CONTROL
(a)
Gradually expose the sensor.
(b)
Verify that the headlights and the accessory lights turn
OFF.
N12998
Clockwise
Counterclockwise
Z14888
Wire Harness Side
1 2 3 4 5 6 7 8
h–8–1–D
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
BE–31
1415
1997 LEXUS ES300 (RM511U)
18.
INSPECT LIGHT–OFF CONDITION
(a)
Turn the ignition switch ON.
(b)
Gradually cover the top of the sensor.
Lights auto ON:
(c)
Verify that the lights will go out when light control switch
position is OFF or the area surrounding the sensor gets
bright or open the driver’s door while the ignition switch is
OFF.
19.
INSPECT LIGHTS–ON CONDITION
(a)
Open the driver’s door while the ignition switch is OFF.
(b)
Turn the light control switch to AUTO leaving the door
open and cover the top of the sensor, and verify that the
lights go on when the ignition switch is turned ON.
20.
ADJUST AUTOMATIC LIGHT CONTROL SENSOR
(a)
Adjustment of the light control is performed by turning the
sensitivity knob on the sensor.
(b)
This will determine at what light condition the automatic
control will take place.
If response is too quick, turn the knob counterclock-
wise.
If response is too slow, turn the knob clockwise.
21.
Connector disconnected:
INSPECT SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the con-
nector on the wire harness side, as shown in the chart.
Tester connection
Condition
Specified condition
3 – Ground
Door courtesy switch OFF
No continuity
3 – Ground
Door courtesy switch ON
Continuity
5 – Ground
Light control switch OFF, TAIL or AUTO
No continuity
5 – Ground
Light control switch HEAD
Continuity
6 – Ground
Light control switch OFF, TAIL or HEAD
No continuity
6 – Ground
Light control switch AUTO
Continuity
7 – Ground
Light Control Switch OFF or AUTO
No continuity
7 – Ground
Light Control Switch TAIL or HEAD
Continuity
N12999
From Back Side
1
3
5
6
8
BE–32
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
1416
1997 LEXUS ES300 (RM511U)
Tester connection
Condition
Specified condition
1 – Ground
Ignition switch position LOCK or ACC
No voltage
1 – Ground
Ignition switch position ON
Battery positive voltage
2 – Ground
Constant
Battery positive voltage
If circuit is as specified, perform the inspection on the following
page.
If the circuit is not as specified, inspect the circuit connected to
other parts.
22.
Connector connected:
INSPECT SENSOR CIRCUIT
Connect the wire harness side connector to the sensor and in-
spect wire harness side connector from the back side.
HINT:
Ignition switch ON.
Light control switch AUTO.
Vehicle’s surroundings are bright.
Tester connection
Condition
Specified condition
1 – Ground
Ignition switch position ON
10 V or more
1 – Ground
Ignition switch position OFF
1 V or less
3 – Ground
Door courtesy switch ON
1 V or less
3 – Ground
Door courtesy switch OFF
9 V or more
5 – Ground
Vehicle’s surroundings are dark
1.8 V or less
5 – Ground
Dimmer switch position Flash
0.3 V or less
6 – Ground
Vehicle’s surroundings are dark
1.5 V or less
8 – Ground
Vehicle is under the direct sun light.
(Sensor is not covered)
3.7 V or more
8 – Ground
Vehicle’s surroundings are dim.
(Sensor is covered and taillights are ON)
1.32
∼
2.32 V
8 – Ground
Vehicle’s surroundings are dark.
(Sensor is covered and headlights are ON)
0.42 V
If circuit is as specified, try replacing the sensor with a new one.
If the circuit is not as specified, inspect the circuit connected to
other parts.
BE04Z–02
N21568
Adjusting Screw A
Adjusting Nut C
Adjusting Screw B
BE6182
Beam Angle Gauge
(Vertical Direction)
OK
OK
OK
Bubble
Beam is
Upward
Front
Beam is
Downward
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
BE–33
1417
1997 LEXUS ES300 (RM511U)
ADJUSTMENT
1.
ADJUSTING HEADLIGHT AIM ONLY
(a)
Put the vehicle in below conditions.
Make sure the body around the headlight is not de-
formed.
Park the vehicle on a level spot.
The driver gets into the driver’s seat and puts the
vehicle in a state ready for driving (with a full tank).
Bounce the vehicle several times.
(b)
Adjust the headlight in vertical direction.
If the bubble is outside the acceptable range of the beam angle
gauge, adjust it using adjusting screw A.
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