Inspection Procedure

1. Disconnect the L62 navigation connector.
2. Disconnect the R32 controller connector.
   Fig 1: Identifying Display And Navigation Assembly 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
   
   

   Tester Connection	Condition	Specified Condition
   L62-11 (RR-) - R32-9 (R3-)	Always	Below 1 Ω
   L62-12 (RR+) - R32-8 (R3+)	Always	Below 1 Ω
   L62-9 (RL-)-R32-11(L3-)	Always	Below 1 Ω
   L62-10 (RL+) - R32-10 (L3+)	Always	Below 1 Ω
   L62-13 (SGD2)-R32-12 (SLD3)	Always	Below 1 Ω
   L62-11 (RR-) - Body ground	Always	10 kΩ or higher
   L62-12 (RR+) - Body ground	Always	10 kΩ or higher
   L62-9 (RL-) - Body ground	Always	10 kΩ or higher
   L62-10 (RL+)-Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Reconnect the L62 navigation connector.
Fig 2: Identifying Display And Navigation Assembly Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.

   Signal waveform 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   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: REPLACE DISPLAY AND NAVIGATION ASSEMBLY  (See REMOVAL )

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