RGB (B: BLUE) SIGNAL CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect display unit connector and AV control unit connector.
3. Check continuity between display unit harness connector terminal 18 and AV control unit harness connector terminal 63.
   

   Display unit		AV control unit		Continuity
   Connector	Terminals	Connector	Terminals
   M71	18	M82	63	Existed

   
   
4. Check continuity between display unit harness connector terminal 18 and ground.
   

   Display unit		Ground	Continuity
   Connector	Terminals
   M71	18		Not existed

   
   

YES>>GO TO 2.

NO>>Repair harness or connector.

1. Connect display unit connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector terminal 18 and ground.
   

   (+)		(−)	Condition		Reference value
   Display unit
   Connector	Terminal
   M71	18	Ground	Ignition switch ON	Start confirmation/adjustment mode, and then display color bar by selecting “Color Spectrum Bar” on DISPLAY DIAGNOSIS screen.

   
   

YES>>Replace display unit.

NO>>Replace AV control unit.