2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 842
Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector terminal 40 and ground.
40 - Ground: Approx. 5 V
Is the inspection result normal?
YES - Replace camera control unit.
NO - Replace AV control unit.
U1255
U1255 SATELLITE RADIO TUNER
Description
DTC Logic
Diagnosis Procedure
1.CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT
Check satellite radio tuner power supply and ground circuits. See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Testing
and Inspection/Component Tests and General Diagnostics/Power Supply and Ground Circuit/Satellite Radio Tuner.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair malfunctioning parts.
2.CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and satellite radio tuner connector.
3. Check continuity between AV control unit harness connector terminals 28, 29, 30 and satellite radio tuner harness connector terminals 8, 9,
10.
28 - 8: Continuity should exist.
29 - 9: Continuity should exist.
30 - 10: Continuity should exist.
4. Check continuity between AV control unit harness connector terminals 28, 29, 30 and ground.
28 - Ground: Continuity should not exist.
29 - Ground: Continuity should not exist.
30 - Ground: Continuity should not exist.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector.
2. Turn ignition switch ON.
