Inspection Procedure

1. Disconnect the stereo component amplifier connectors
2. Measure the resistance according to the value(s) in the table below

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   P27-2 (GND) - Body ground	Always	Below 1 Ω
   P27-6 (GND2) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying Stereo Component Amplifier Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   P27-1 (+B) - P27-2 (GND)	Always	11 to 14 V
   P27-3 (+B2) - P27-2 (GND)	Always	11 to 14 V
   P30-12 (ACC) - P27-2 (GND)	Engine switch on (ACC)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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