Inspection Procedure

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   GND - Body ground	Always	Below 1 Ω

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

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   B - GND	Always	10 to 14 V
   +B - GND	Always	10 to 14 V
   ACC - GND	Ignition switch on (ACC)	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 1: Disconnecting Radio Receiver Connectors

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