Inspection Procedure

1. Disconnect the R32 controller connector.
2. Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.
   Fig 1: Identifying R32 Controller Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Signal waveform 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   R32-9 (R3-) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
   R32-8 (R3+) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
   R32-11 (L3-) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
   R32-10 (L3+) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output

NG: Go to step 2 

OK: REPLACE MULTI-DISPLAY CONTROLLER  (See REMOVAL  )

1. Disconnect the L62 navigation connector
2. Disconnect the R32 controller connector.
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
   L62-11 (RR-) - R32-9 (R3-)	Always	Below 1 Ω
   L62-12 (RR+) - R32-8 (R3+)
   L62-9 (RL-) - R32-11 (L3-)
   L62-10 (RL+) - R32-10 (L3+)
   L62-13 (SGD2) - R32-12 (SLD3)
   L62-11 (RR-) - Body ground	Always	10 kΩ or higher
   L62-12 (RR+) - Body ground
   L62-9 (RL-) - Body ground
   L62-10 (RL+) - Body ground

   Fig 2: Checking Harness And Connector (Display And Navigation Assembly - Multi-Display Controller)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE DISPLAY AND NAVIGATION ASSEMBLY  (see REMOVAL )