Inspection Procedure

1. INSPECT DISC PLAYER CHANGER (+B, ACC, GND) 
   1. Disconnect the disc player changer connector C3.
   2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION
      
      

      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: 

   SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   +B - GND	Always	10 to 14 V
   ACC - GND	Ignition SW ACC	10 to 14 V

   Fig 1: Disconnecting Disc Player Changer Connector C3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Go to step 2 

   OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  DIAGNOSTIC TROUBLE CODE CHART   OR  PROBLEM SYMPTOMS TABLE  

2. CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSY - DISC PLAYER CHANGER) 

1. Disconnect the radio and navigation assy connector R4 and disc player changer connector C3.
2. Measure the resistance according to the value (s) in the table below.

Standard: 

Fig 2: Disconnecting Radio And Navigation Assy Connector R4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Disconnecting Disc Player Changer Connector C3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE RADIO AND NAVIGATION ASSY (SEE  RADIO RECEIVER ASSY  )