Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position and press the intelligent tester main switch ON.

Select the items below in the DATA LIST, and read the displays on the intelligent tester.

BODY

ITEM MEASUREMENT CONDITION CHART

Item	Measurement Item/ Display (Range)	Normal Condition	Diagnostic Note
ILLUMINATE RATE	Illuminate rate/(0.8ms to 22.0ms)	Value is output according to ambient light	-

NG: Go to next step

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

CHECK HARNESS OR CONNECTOR (BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)

Disconnect the automatic light control sensor connector and body ECU connector.

Measure the resistance according to the value(s) in the table below.

Fig 1: Checking Harness Or Connector (Body ECU - Automatic Light Control Sensor)

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Condition	Specified Condition
CLTE (A10-3) - CLTE (B4-4)	Always	Below 1 Ω
CLTS (A10-5) - CLTS (B4-5)	Always	Below 1 Ω
CLTB (A10-6) - CLTB (B4-6)	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next step

REPLACE AUTOMATIC LIGHT CONTROL SENSOR
1. Return to normal operation.
NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

OK: END