Diagnosis Procedure

Check display unit power supply and ground circuit. Refer to "DISPLAY UNIT: DIAGNOSIS PROCEDURE ".

Is the inspection result normal? 

YES: GO TO 2.

NO: Repair malfunctioning parts.

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

   Display unit		AV control unit		Continuity
   Connector	Terminals	Connector	Terminals
   M71	11	M202	51	Existed
   	22		39

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

   Display unit		Ground	Continuity
   Connector	Terminals
   M71	11		Not existed
   	22

   Is the inspection result normal? 

   YES: GO TO 3.

   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 and ground.

   (+)		(-)	Condition	Reference value
   Display unit
   Connector	Terminal
   M71	22	Ground	When adjusting display brightness.

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Replace AV control unit. Refer to "EXPLODED VIEW ".

Check signal between display unit harness connector and ground.

(+)		(-)	Condition	Reference value
Display unit
Connector	Terminal
M71	11	Ground	When adjusting display brightness.

Is the inspection result normal? 

YES: INSPECTION END

NO: Replace display unit. Refer to "EXPLODED VIEW ".