Stereo Component Amplifier Power Source Circuit: Procedure

1. Disconnect the F2 and F18 stereo component amplifier assembly connectors.
   Fig 1: Identifying F2 And F18 Stereo Component Amplifier Connectors

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F2-2 (GND) - Body ground	Always	Below 1 Ω
   F2-6 (GND2) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   F2-3 (+B2) - F2-2 (GND)	Always	11 to 14 V
   F2-1 (+B) - F2-2 (GND)	Always	11 to 14 V
   F18-12 (ACC) - F2-2 (GND)	Engine switch on (ACC)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Stereo Component Amplifier Assembly)
   *2	Front view of wire harness connector (to Stereo Component Amplifier Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2