On-Vehicle Inspection

WARNING: This page is about a different car, the 2006 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT AUTOMATIC LIGHT CONTROL SENSOR

Measure the continuity, waveform and voltage according to the value(s) in the table below.

NOTE: With connector connected, perform inspection from the backside of the connector.

Fig 1: Identifying Automatic Light Control Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

STANDARD VOLTAGE CONDITION CHART

Tester connection	Condition	Specified condition
6 - 3	Always	10 to 14 V
5 - 3	Ignition switch on (IG), Headlight dimmer SW in AUTO	Pulse generation (See WAVEFORM 1 )

STANDARD RESISTANCE CONDITION CHART

Tester connection	Condition	Specified condition
3 - Body ground	Always	Below 1

Waveform 1

WAVEFORM REFERENCE CHART

Item	Description
Terminal	CLTS (5) - CLTE (3)
Gauge	5 V/DIV, 5 ms/DIV
Condition	Ignition switch ON (IG), Headlight dimmer SW in AUTO

HINT:

If the ambient light becomes brighter, width A will become narrower.

Fig 2: Waveform Reference Chart