With Surround Sound

U1243 DISPLAY UNIT

DTC Logic








Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" With Surround Sound.

1. CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuits. Refer to "DISPLAY UNIT : Diagnosis Procedure" With Surround Sound.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace harness or connectors.

2. CHECK COMMUNICATION CIRCUIT CONTINUITY

1.Turn ignition switch OFF.
2.Disconnect display unit connector M92 and AV control unit connector M124.
3.Check continuity between display unit connector M92 terminals 9, 10 and AV control unit connector M124
terminals 77, 61.





4.Check continuity between display unit connector M92 terminals 9, 10 and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness or connectors.
CONT)

3. CHECK COMMUNICATION SIGNAL (DISP -> CONT)

1.Connect display unit connector M92 and AV control unit connector M124.
2.Turn ignition switch ON.
3.Check signal between display unit connector M92 terminal 9 and ground.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- GO TO 4.
NO- Replace AV control unit. Refer to "Removal and Installation AV Control Unit" With Surround Sound.
DISP)

4. CHECK COMMUNICATION SIGNAL (CONT -> DISP)

Check signal between display unit connector M92 terminal 10 and ground.





Is the inspection result normal?
YES- Inspection End.
NO- Replace display unit. Refer to "Removal and Installation" With Surround Sound.
Revision: March 20122013 Infiniti JX