Nissan Maxima Service and Repair Manual: U1255 satellite radio tuner

Nissan Maxima Service and Repair Manual / Driver information & multimedia / Audio, visual & navigation system / DTC/circuit diagnosis / U1255 satellite radio tuner

Descriptio

Part name  Description 
SATELLITE RADIO TUNER 
  • Inputs the satellite radio signal from satellite radio antenna and outputs the sound signal to the AV control unit.
  • It is controlled with the AV control unit and serial communication (communication signal and request signal). 

DTC Logic

Nissan Maxima. DTC Logic

Diagnosis Procedure

1.CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT

Check satellite radio tuner power supply and ground circuit

2.CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

Nissan Maxima. CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect AV control unit connector M116 and satellite radio tuner connector B111.
  3. Check continuity between AV control unit harness connector M116 (A) and satellite radio tuner harness connector B111 (B).
  4. Check continuity between AV control unit harness connector M116 (A) and groun

Nissan Maxima. CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

Nissan Maxima. CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

Nissan Maxima. CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

3.CHECK AV CONTROL UNIT VOLTAGE

Nissan Maxima. 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 M116 and ground.

Nissan Maxima. CHECK AV CONTROL UNIT VOLTAGE

4.CHECK SATELLITE RADIO TUNER

Nissan Maxima. CHECK SATELLITE RADIO TUNER

  1. Turn ignition switch OFF.
  2. Disconnect AV control unit connector.
  3. Connect satellite radio tuner.
  4. Turn ignition switch ON.
  5. Check voltage between satellite radio tuner harness connector terminal ground.

Nissan Maxima. CHECK SATELLITE RADIO TUNER

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    U1300 AV comm circuit
    Description U1300 is indicated when a communication signal malfunction occurs. U1300 is indicated along with DTCs that identify components connected to the AV control unit through communication l ...

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