Inspection Procedure

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

Resistance 

Fig 1: Disconnecting Multi-Display Controller Connector R15 And Television Camera ECU Connector T16

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step. 

1. Reconnect the multi-display controller connector R1 5.
2. Measure the waveform according to the table below.

   OK 

   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 2: Disconnecting Television Camera ECU Connector T16

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   HINT:

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

3. Oscilloscope waveform
   1. Terminal: SYNC - Body ground Setting:

      500 mV/DIV 10 s/DIV

      Condition: Navigation display is ON.

   2. Terminal: R, G, B - Body ground

      Setting: 200 mV/DIV 10 s/DIV

      Condition: Navigation map is switched.

Fig 3: Signal Waveform Graph

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NG: REPLACE MULTI-DISPLAY CONTROLLER 

OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL