Lexus GS300/400 (2000 year). Service manual - part 82
I04038
I04039
BE–42
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
2343
8 – Ground
Headlight dimmer switch HIGH beam or FLASH
Continuity
1 – Ground
Ignition switch LOCK or ACC
No voltage
1 – Ground
Ignition switch ON or START
Battery positive voltage
5 – Ground
Engine Stop
No voltage
5 – Ground
Engine Running
Battery positive voltage
7 – Ground
Constant
Battery positive voltage
9 – Ground
Constant
Battery positive voltage
If circuit is specified, try replacing the relay with a new one.
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
16.
INSPECT AUTOMATIC LIGHT CONTROL
AUTO ON:
(a)
Turn the ignition switch ON.
(b)
Turn the light control switch to AUTO.
(c)
Gradually cover the top of the sensor.
(d)
Check the accessory lights and the headlights should turn
ON.
17.
INSPECT AUTOMATIC LIGHT CONTROL
AUTO OFF:
(a)
Gradually expose the sensor.
(b)
Check the headlights and the accessory lights should turn
OFF.
18.
INSPECT LIGHT–OFF CONDITION
(a)
Turn the ignition switch ON.
(b)
Gradually cover the top of the sensor.
Lights auto ON:
(c)
Check that the lights go off under the following conditions.
(1)
Light control switch is OFF.
(2)
The area surrounding the sensor gets bright.
(3)
The driver’s door is opened with the ignition switch
OFF.