2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 840
Diagnosis Procedure
1.CHECK REAR DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check rear display unit power supply and ground circuits. See: Accessories and Optional Equipment/Entertainment Systems/Testing and
Inspection/Component Tests and General Diagnostics/Power Supply and Ground Circuit/Rear Display Unit.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair malfunctioning parts.
2.CHECK CONTINUITY SERIAL COMMUNICATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear display unit connector and video distributor connector.
3. Check continuity between rear display unit harness connector terminals 9, 10 and video distributor harness connector terminals 39, 40.
9 - 39: Continuity should exist.
10 - 40: Continuity should exist.
4. Check continuity between rear display unit harness connector terminals 9, 10 and ground.
9, 10 - Ground: Continuity should not exist.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK SERIAL COMMUNICATION SIGNAL
1. Connect rear display unit connector and video distributor connector.
2. Turn ignition switch ON.
3. Check signal between rear display unit harness connector terminal 9 and ground.
Is the inspection result normal?
YES - GO TO 4.
NO - Replace rear display unit.
4.CHECK SERIAL COMMUNICATION SIGNAL
Check signal between rear display unit harness connector terminal 10 and ground.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace video distributor.
With Mobile Entertainment System
