Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)

Disconnect the automatic light control sensor connector and B6 connector of the multiplex network body ECU.

Fig 1: Identifying Automatic Light Control Sensor And B6 Connector Of Multiplex Network Body ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

RESISTANCE REFERENCE CHART

Tester Connection	Condition	Specified Condition
CLTE (A27-3) - CLTE (B6-4)	Always	Below 1 Ω
CLTS (A27-4) - CLTS (B6-5)	Always	Below 1 Ω
CLTB (A27-1) - CLTB (B6-6)	Always	Below 1 Ω
CLTE (B6-4) - Body ground	Always	10 kΩ or higher
CLTS (B6-5) - Body ground	Always	10 kΩ or higher
CLTB (B6-6) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Reconnect the automatic light control sensor connector and B6 connector of the multiplex network body ECU.

Fig 2: Identifying B6 From Instrument Panel Junction Block Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard voltage

VOLTAGE CHART

Tester connection	Condition	Specified voltage
CLTE (B6-4) - CLTB (B6-6)	Ignition switch OFF Ω ON	Below 1 V Ω 10 to 14 V

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

OK: REPLACE AUTOMATIC LIGHT CONTROL SENSOR