Radio Receiver Power Source Circuit: Procedure

1. Disconnect the radio receiver assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 10 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   H51-20 (GND) - Body ground	Always	Below 1 Ω

   FOR 6 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   H48-7 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   FOR 10 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   H51-1 (B) - H51-20 (GND)	Power switch off	11 to 14 V
   H51-11 (ACC) - H51-20 (GND)	Power switch on (ACC)	11 to 14 V

   FOR 6 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   H48-4 (B) - H48-7 (GND)	Power switch off	11 to 14 V
   H48-3 (ACC) - H48-7 (GND)	Power switch on (ACC)	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2