On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 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.

Fig 1: Identifying Automatic Light Control Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard voltage

VOLTAGE SPECIFICATION

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 b waveform 1)

Standard resistance

RESISTANCE SPECIFICATION

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

Waveform 1

WAVEFORM REFERENCE

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: Identifying Waveform 1 Graph