Av Communication Line Check (Between Display Control Unit And Av Switch)

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AV SWITCH CIRCUIT

Turn ignition switch OFF.
Disconnect display control unit connector and AV switch connector.

Check continuity between display control unit and AV switch.

CONTINUITY SPECIFICATION

Terminals				Continuity
Display control unit (+)		AV switch (-)
Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
M95	28 (V)	M98	6(V)	Yes
	30 (LG)		8(LG)

Check continuity between display control unit and ground.

CONTINUITY SPECIFICATION

Terminals			Continuity
Display control unit (+)		-
Connector	Terminal (Wire color)
M95	28 (V)	Ground	No
	30 (LG)

Fig 1: Checking Continuity Between Display Control Unit And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.
NG: Repair harness or connector.

CHECK AV COMMUNICATION SIGNAL
1. Connect display control unit connector and AV switch connector.
2. Turn ignition switch ON.
3. Check signal between display control unit harness connector M95 terminal 28 (V) and 30 (LG) with CONSULT-II or oscilloscope.
1. 28 (V), 30 (LG) - Ground: Refer to TERMINALS AND REFERENCE VALUE FOR DISPLAY CONTROL UNIT .
OK or NG
1. OK: Replace AV switch. Refer to REMOVAL AND INSTALLATION FOR AV SWITCH .
2. NG: Replace display control unit. Refer to REMOVAL AND INSTALLATION OF DISPLAY CONTROL UNIT .
  
  Fig 2: Checking Signal Between Display Control Unit Harness Connector M95 Terminal 28 (V) And 30 (LG)
  Courtesy of NISSAN MOTOR CO., U.S.A.