Inspection Procedure

1. Disconnect the L16 display connector.
2. Disconnect the L5 terminal connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   L16-7 (R1+) - L5-1 (VAR+)	Below 1 Ω
   L16-8 (L1+) - L5-2 (VAL+)	Below 1 Ω
   L16-23 (SGND) - L5-3 (VA-)	Below 1 Ω
   L16-24 (ADPG) - L5-8 (ADPG)	Below 1 Ω
   L16-7 (R1+) - Body ground	10 kΩ or higher
   L16-8 (L1+) - Body ground	10 kΩ or higher

Fig 1: Identifying L16 Display And L5 Terminal Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to Next Step 

1. Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions shown in the table below.

   OK 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   L5-1 (VAR+) - Body ground	External device system is playing, sound is being produced	Waveform synchronized with sound is output
   L5-2 (VAL+) - Body ground	External device system is playing, sound is being produced	Waveform synchronized with sound is output

Fig 2: Checking Video Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE VIDEO TERMINAL 

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