Inspection Procedure

1. Disconnect the radio receiver R16 connector.
2. Measure the resistance according to the values in BATTERY - RADIO RECEIVER (RESISTANCE)  .

   Standard resistance 

   BATTERY - RADIO RECEIVER (RESISTANCE)
   
   

   Tester Connection	Condition	Specified Condition
   GND (R16-20) - Body ground (1)	Always	Below 1 Ω
   GND (R16-7) - Body ground (2)	Always	Below 1 Ω
   (1) Separate Type Amplifier (2) Built-in Type Amplifier

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

   Standard voltage 

   BATTERY - RADIO RECEIVER (VOLTAGE)
   
   

   Tester Connection	Condition	Specified Condition
   +B (R16-1) - GND (R16-20) (1)	Always	10 to 14 V
   B (R16-4) - GND (R16-7) (2)	Always	10 to 14 V
   ACC (R16-11) - GND (R16-20) (1)	Ignition SW ACC	10 to 14 V
   ACC (R16-3) - GND (R16-7) (2)	Ignition SW ACC	10 to 14 V
   (1) Separate Type Amplifier (2) Built-in Type Amplifier

   Fig 1: Checking Harness And Connector (Battery - Radio Receiver)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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