Inspection Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying Multi-Display Controller Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Switch Condition	Specified Condition
   R32-5 (MUT5) - Body ground	Turn engine switch to ACC, audio system is playing → Changing modes	Above 3.5 V → Below 1 V

NG: Go to step 2 

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

1. Disconnect the L62 navigation connector.
2. Disconnect the R32 controller connector.
   Fig 2: Identifying Navigation Assembly And Multi-Display Controller Connector Terminal

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   L62-8 (MUTE) - R32-6 (MUT5)	Always	Below 1 Ω
   L62-8 (MUTE) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE DISPLAY AND NAVIGATION ASSEMBLY  (See REMOVAL )