Radio Receiver Power Source Circuit: Wiring Diagram

1. Disconnect the radio receiver connector.
2. Measure the resistance according to the value in RADIO RECEIVER ASSEMBLY (RESISTANCE)  .

   Standard resistance 

   RADIO RECEIVER ASSEMBLY (RESISTANCE)
   
   

   Tester connection	Condition	Specified condition
   GND - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the values in RADIO RECEIVER ASSEMBLY (VOLTAGE)  .

   Standard voltage 

   RADIO RECEIVER ASSEMBLY (VOLTAGE)
   
   

   Tester connection	Condition	Specified condition
   +B - GND ((2)) ((3))	Always	10 to 14 V
   B - GND ((1))	Always	10 to 14 V
   ACC - GND	Ignition SW ACC	10 to 14 V
   (1) 10 Speaker without Navigation System (2) 6 Speaker with Rear Seat Entertainment System (3) 6 Speaker without Rear Seat Entertainment System

   Fig 2: Inspecting Radio Receiver Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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