Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BODY ECU)

Disconnect the radio receiver connector E70 and main body ECU connector E60.

Measure the resistance according to the values in the table below.

Standard resistance

RESISTANCE SPECIFICATION

Tester connection	Condition	Specified condition
ADIM - ACAN	Always	Below 1 Ω
ADIM - Body ground	Always	10 kΩ or higher

Fig 1: Identifying Radio Receiver Connector E70 And Main Body ECU Connector E60

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT RADIO RECEIVER

Connect the main body ECU connector.
Turn the engine switch on (IG).
Turn the light control switch to the TAIL or HEAD position.

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

Standard voltage

VOLTAGE SPECIFICATION

Tester connection	Condition	Specified condition
ADIM - Body ground	Light control switch in TAIL or HEAD	10 to 14 V

Fig 2: Identifying Radio Receiver Connector

NG: GO TO LIGHTING SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

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