Inspection Procedure

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

CHECK OUTER MIRROR CONTROL ECU (OUTER MIRROR CONTROL ECU POWER SOURCE)

Disconnect the M10 connector*1
Disconnect the L10 connector*2

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

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
M10-6 (BDR) - Body ground1 L10-6 (BDR) - Body ground2	Always	11 to 14 V
M10-4 (CPUB) - Body ground1 L10-4 (CPUB) - Body ground2	Always	11 to 14 V
M10-3 (SIG) - Body ground1 L10-3 (SIG) - Body ground2	Engine switch on (IG)	11 to 14 V
HINT: 1. for LH side 2. for RH side

Fig 1: Identifying M10 And L10 Connector Terminal

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
M10-1 (GND) - Body ground L10-1 (GND) - Body ground	Always	Below 1 Ω

Fig 2: Identifying M10 And L10 Connector Terminal

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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