Radio Receiver Power Source Circuit: Procedure

1. Disconnect the RAD NO. 1 fuse from the engine room No. 2 relay block.
2. Disconnect the ACC fuse from the instrument panel junction block.
3. Measure the resistance of the fuses.

   Standard resistance 

   Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the E47 receiver connector.
   Fig 1: Checking Harness And Connector (Radio Receiver - Battery And Connector)

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

   Standard Voltage 

   Standard Resistance 

   Tester Connection	Switch Condition	Specified Condition
   E47-4 (B) - Body ground	Always	11 to 14 V
   E47-3 (ACC) - Body ground	Ignition switch ACC	11 to 14 V

   Tester Connection	Specified Condition
   E47-7 (GND) - Body ground	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

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