Inspection Procedure

1. Disconnect the multi-display controller sub-assy connector R15 and television camera ECU connector T16.
2. Measure the resistance according to the value(s) in the table below.

   Standard: 

   MULTI-DISPLAY CONTROLLER SUB-ASSY AND TELEVISION CAMERA ECU TERMINALS RESISTANCE
   
   

   Tester connection	Condition	Specified condition
   R1 - R1	Always	Below 1 Ω
   G1 - G1	Always	Below 1 Ω
   B1 - B1	Always	Below 1 Ω
   SYNC1 - SYN1	Always	Below 1 Ω
   VR1 - VR1	Always	Below 1 Ω
   R1 - Body ground	Always	10 kΩ or higher
   G1 - Body ground	Always	10 kΩ or higher
   B1 - Body ground	Always	10 kΩ or higher
   SYNC1 - Body ground	Always	10 kΩ or higher
   VR1 - Body ground	Always	10 kΩ or higher

   Fig 1: Disconnecting Multi-Display Controller Sub-Assy Connector R15

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Disconnecting Television Camera ECU Connector T16

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: Go to next step. 

1. Reconnect the multi-display controller sub-assy connector R15.
2. Measure the waveform according to the table below.

   Standard: 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   R1 - Body ground	Navigation map is switched	A waveform synchronized with display signals is output
   G1 - Body ground	Navigation map is switched	A waveform synchronized with display signals is output
   B1 - Body ground	Navigation map is switched	A waveform synchronized with display signals is output
   SYN1 - Body ground	Navigation display is ON	A waveform synchronized with display signals is output

   Fig 3: Disconnecting Television Camera ECU Connector T16

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSY (SEE  MULTI-DISPLAY CONTROLLER SUB-ASSY  ) 
2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

HINT:

The waveform pattern may differ from those shown in the illustrations below due to differences in oscilloscope setting. A normal multi-display controller sub-assy operating condition can be determined if any waveform is output.

Oscilloscope wave

Terminal: SYNC-Body ground

Setting: 500 mV/DIV 10 mus/DIV

Condition: Navigation display is ON.

Fig 4: Oscilloscope Waveform Graph (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Oscilloscope wave

Terminal: R, G, B-Body ground

Setting: 200 mV/DIV 10 mus/DIV

Condition: Navigation map is switched.

Fig 5: Oscilloscope Waveform Graph (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002