Power Source Circuit: Procedure

1. Disconnect the E66 connector.
   Fig 1: Identifying Outer Mirror Control ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition	Specified Condition
   E66-3 (B) - Body ground	Always	10 to 14 V
   E66-4 (ACC) - Body ground	Engine switch on (ACC)	10 to 14 V

   Standard resistance

   Tester Connection	Condition	Specified Condition
   E66-9 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE WIRE HARNESS 

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