Nissan Maxima Service and Repair Manual: Communication signal circuit

SATELLITE RADIO TUNER

SATELLITE RADIO TUNER : Description

Communication signals are exchanged between the AV control unit and satellite radio tuner using the communication circuits.

SATELLITE RADIO TUNER : Diagnosis Procedure

1.CHECK HARNESS - 1

Nissan Maxima. CHECK HARNESS - 1

  1. Turn ignition switch OFF.
  2. Disconnect satellite radio tuner (factory installed) connector B111 and AV control unit connector M153.
  3. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 28 and AV control unit harness connector M153 (B) terminal 28.
  4. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 28 and ground.

Nissan Maxima. CHECK HARNESS - 1

Nissan Maxima. CHECK HARNESS - 1

2.CHECK HARNESS - 2

Nissan Maxima. CHECK HARNESS - 2

  1. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 29 and AV control unit harness connector M153 (B) terminal 29.
  2. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 29 and ground.

3.CHECK HARNESS - 3

Nissan Maxima. CHECK HARNESS - 3

  1. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 30 and AV control unit harness connector M153 (B) terminal 30.
  2. Check continuity between satellite radio tuner (factory installed) harness connector B111 (A) terminal 30 and ground.

Nissan Maxima. CHECK HARNESS - 3

Nissan Maxima. CHECK HARNESS - 3

4.CHECK REQ1 SIGNAL

Nissan Maxima. CHECK REQ1 SIGNAL

  1. Connect satellite radio tuner (factory installed) connector and AV control unit connector.
  2. Turn ignition switch to ACC.
  3. Check signal between satellite radio tuner (factory installed) harness connector B111 terminal 28 and ground with CONSULT or oscilloscope

Nissan Maxima. CHECK REQ1 SIGNAL

5.CHECK TXD SIGNAL

Nissan Maxima. CHECK TXD SIGNAL

Check signal between satellite radio tuner (factory installed) harness connector B111 terminal 29 and ground with CONSULT or oscilloscope

Nissan Maxima. CHECK TXD SIGNAL

6.CHECK RXD SIGNAL

Nissan Maxima. CHECK RXD SIGNAL

Check signal between satellite radio tuner (factory installed) harness connector B111 terminal 30 and ground with CONSULT or oscilloscope.

Nissan Maxima. CHECK RXD SIGNAL

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