Radio Receiver Power Source Circuit [09/2020 - ]: Procedure

1. Disconnect the K173 and K172 radio receiver assembly connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K172-1 (GND1) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   K172-4 (+B1) - K172-1 (GND1)	Always	11 to 14 V
   K172-15 (ACC1) - K172-1 (GND1)	Ignition switch ACC	11 to 14 V
   K173-19 (IG) - K172-1 (GND1)	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR