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Home >> Lexus >> 2001 >> IS 300 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Automatic Headlights >> Circuit Tests >> Automatic Light Control Sensor Circuit >> Automatic Light Control Sensor Circuit Values (LX470)

Automatic Light Control Sensor Circuit Values (LX470)

SENSOR CIRCUIT VALUES - HARNESS DISCONNECTED (LX470)

Tester Connection Condition Circuit Value
1 & Ground Ignition Switch In ON Position Battery Voltage
1 & Ground Ignition Switch In LOCK Or ACC Position No Voltage
2 & Ground Constant Battery Voltage
3 & Ground Driver's Door Courtesy Switch In OFF Position No Continuity
3 & Ground Driver's Door Courtesy Switch In ON Position Continuity
5 & Ground Light Control Switch In HEAD Position Continuity
6 & Ground Light Control Switch In AUTO Position Continuity
7 & Ground Light Control Switch In TAIL Position Continuity
SENSOR CIRCUIT VALUES - HARNESS CONNECTED (LX470)

Tester Connection Condition Circuit Value
1 & Ground Ignition Switch In ON Position 10 Volts Or Greater
1 & Ground Ignition Switch In OFF Position One Volt Or Less
3 & Ground Driver's Door Courtesy Switch in OFF Position 9 Volts Or Greater
3 & Ground Driver's Door Courtesy Switch in ON Position One Volt Or Less
5 & Ground Light Control Switch In FLASH Position 0.3 Volt Or Less
5 & Ground Vehicle In Direct Sun Light 1.8 Volts Or Less
7 & Ground Vehicle In Direct Sun Light 1.5 Volts Or Less