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Audio, Visual & Navigation System (Display Audio): Diagnosis Nissan Note E12

Entertainment Systems 4 illustrations ~2380 words

Audio Unit Self Diagnosis Results

Only Unit Part Is Displayed In Red
Screen switchDescriptionPossible cause
Control unitMalfunction is detected in audio unit power supply and ground circuits.Audio unit power supply or ground circuits. Refer to " AUDIO UNIT: DIAGNOSIS PROCEDURE ". If no malfunction is detected in audio unit power supply and ground circuits, replace audio unit. Refer to " REMOVAL AND INSTALLATION ".
A Connecting Cable Between Units Is Displayed In Yellow
Area with yellow connection linesDescriptionPossible cause
Control unit <==> BT HF UnitWhen one of the following is detected: malfunction is detected in Bluetooth® control unit power supply and ground circuits. malfunction is detected in AV communication circuits between audio unit and Bluetooth® control unit.Bluetooth® control unit power supply or ground circuits. Refer to " BLUETOOTH® CONTROL UNIT: DIAGNOSIS PROCEDURE ". AV communication circuits between audio unit and Bluetooth® control unit.

Scheme 52

Scheme 52: Audio Unit Confirmation/Adjustment
Scheme 52: Audio Unit Confirmation/Adjustment
  1. Select Confirmation/Adjustment.
  2. Select each switch on the Confirmation/Adjustment screen to display the relevant trouble diagnosis screen. Press the BACK switch to return to the initial Confirmation/Adjustment screen.

Scheme 53

Scheme 53: Display Diagnosis
Scheme 53: Display Diagnosis

Speaker Test

Select Speaker Test to display the Speaker Diagnosis screen. Press Start to generate a test tone in a speaker. Press Start again to generate a test tone in the next speaker. Press End to stop the test tones.

Scheme 54

Scheme 54: Speaker Test
Scheme 54: Speaker Test

AV COMM Diagnosis

  1. Displays the communication status between audio unit (master unit) and Bluetooth® control unit.
  2. The error counter displays OK if any malfunction was not detected in the past and displays 0 if a malfunction is detected. It increases by 1 if the condition is normal at the next ignition switch ON cycle. The upper limit of the counter is 39.
  3. The error counter is erased if Reset is pressed.
ItemsStatus (Current)Counter (Past)
BUS OFFOK/???OK/0 - 39
C Rx (BTHF-H/U)OK/???OK/0 - 39
NOTE: "???" indicates UNKWN.
NOTE
"???" indicates UNKWN.

Scheme 55

Scheme 55
Scheme 55

AUDIO UNIT: Diagnosis Procedure

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK FUSE Check that the following fuses are not blown. Terminal No. Signal name Fuse No. 7 ACC power supply 18 (10A) 19 Battery power supply 29 (15A) Are the fuses blown? YES: Replace the blown fuse after repairing the affected circuit. NO: GO TO 2.
  2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect audio unit connector M45. Check voltage between audio unit connector M45 and ground. Audio unit Ground Condition Voltage (Approx.) Connector Terminal M45 7 - Ignition switch: ON Battery voltage 19 Ignition switch: OFF Is the inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK GROUND CIRCUIT Turn ignition switch OFF. Disconnect audio unit connector M40. Check continuity between audio unit connectors and ground. Audio unit Ground Continuity Connector Terminal M45 20 - Yes M40 44 46 48 Is the inspection result normal? YES: Inspection End. NO: Repair or replace harness or connectors.

BLUETOOTH® CONTROL UNIT: Diagnosis Procedure

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK FUSE Check that the following fuses are not blown. Terminal No. Signal name Fuse No. 1 Battery power supply 29 (15A) 2 ACC power supply 17 (10A) 3 Ignition signal 5 (10A) Are the fuses blown? YES: Replace the blown fuse after repairing the affected circuit. NO: GO TO 2.
  2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect Bluetooth® control unit connector B33. Check voltage between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Condition Voltage (Approx.) Connector Terminal B33 1 - Ignition switch: OFF Battery voltage 2 Ignition switch: ACC 3 Ignition switch: ON Is the inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK GROUND CIRCUIT Turn ignition switch OFF. Check continuity between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Continuity Connector Terminal B33 4 - Yes 20 22 23 24 27 Is the inspection result normal? YES: Inspection End. NO: Repair or replace harness or connectors.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR CHECK Check the audio unit and speaker connectors for the following: Proper connection Damage Disconnected or loose terminals Is the inspection result normal? YES: GO TO 2. NO: Repair the terminals or connectors.
  2. CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY Disconnect audio unit connector M45 and suspect front door speaker connector. Check continuity between audio unit connector M45 and suspect front door speaker connector. Audio unit Front door speaker Continuity Connector Terminal Connector Terminal M45 2 D12 (LH) 1 Yes 3 2 11 D112 (RH) 1 12 2 Check continuity between audio unit connector M45 and ground. Audio unit Ground Continuity Connector Terminal M45 2 - No 3 11 12 Is the inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK FRONT DOOR SPEAKER SIGNAL Connect audio unit connector M45 and suspect front door speaker connector. Turn ignition switch to ACC. Push audio unit POWER switch. Check signal between the terminals of audio unit connector M45. Audio unit connector M45 Condition Reference value (+) (-) Terminal Terminal 2 3 Audio signal output 11 12 Is the inspection result normal? YES: Replace front door speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S05437301942014120500000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CONNECTOR CHECK Check the audio unit and speaker connectors for the following: Proper connection Damage Disconnected or loose terminals Is the inspection result normal? YES: GO TO 2. NO: Repair the terminals or connectors.
  2. CHECK REAR DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY Disconnect audio unit connector M45 and suspect rear door speaker connector. Check continuity between audio unit connector M45 and suspect rear door speaker connector. Audio unit Rear speaker Continuity Connector Terminal Connector Terminal M45 4 D207 (LH) 1 Yes 5 2 13 D307 (RH) 1 14 2 Check continuity between audio unit connector M45 and ground. Audio unit Ground Continuity Connector Terminal M45 4 - No 5 13 14 Is the inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK REAR DOOR SPEAKER SIGNAL Connect audio unit connector M45 and suspect rear door speaker connector. Turn ignition switch to ACC. Push audio unit POWER switch. Check signal between the terminals of audio unit connector M45. Audio unit connector M45 Condition Reference value (+) (-) Terminal Terminal 4 5 Audio signal output 13 14 Is the inspection result normal? YES: Replace rear door speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S16946709802014120500000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK BLUETOOTH® VOICE SIGNAL CIRCUIT CONTINUITY Turn ignition switch OFF. Disconnect audio unit connector M40 and Bluetooth® control unit connector B33. Check continuity between audio unit connector M40 and Bluetooth® control unit connector B33. Audio unit Bluetooth® control unit Continuity Connector Terminal Connector Terminal M40 25 B33 9 Yes Check continuity between audio unit connector M40 and ground. Audio unit Ground Continuity Connector Terminal M40 25 - No Is inspection result normal? YES: GO TO 2. NO: Repair or replace harness or connectors.
  2. CHECK BLUETOOTH® VOICE SIGNAL GROUND CIRCUIT CONTINUITY Check continuity between audio unit connector M40 and Bluetooth® control unit connector B33. Audio unit Bluetooth® control unit Continuity Connector Terminal Connector Terminal M40 24 B33 10 Yes Is inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK BLUETOOTH® VOICE SIGNAL Connect audio unit connector M40 and Bluetooth® control unit connector B33. Turn ignition switch to ACC. Press switch. Check signal between the terminals of audio unit connector M40. Audio unit connector M40 Condition Reference value (+) (-) Terminal Terminal 25 24 During voice guide output with switch pressed. Is the inspection result normal? YES: Replace Bluetooth® control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S35295769732014120500000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK CONTROL SIGNAL CIRCUIT CONTINUITY Turn ignition switch OFF. Disconnect Bluetooth® control unit connector B33. Check continuity between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Continuity Connector Terminals B33 20 - Yes 22 23 24 27 Is the inspection result normal? YES: Replace Bluetooth® control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S35295769732014120500000) ". NO: Repair or replace harness or connectors.

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK REVERSE INPUT SIGNAL Turn ignition switch ON. Shift the selector lever to R (reverse). Check voltage between audio unit connector M40 and ground. Audio unit Ground Condition Voltage (Approx.) (+) (-) Connector Terminal M40 50 - Selector lever in R (reverse) Battery Voltage Is inspection result normal? YES: GO TO 2. NO: Repair or replace harness or connectors.
  2. CHECK CAMERA POWER SUPPLY CIRCUIT CONTINUITY Turn ignition switch OFF. Disconnect audio unit connector M40 and rear view camera connector. Check continuity between audio unit connector M40 and rear view camera connector D501. Audio unit Rear view camera Continuity Connector Terminal Connector Terminal M40 34 D501 2 Yes Check continuity between audio unit connector M40 and ground. Audio unit Ground Continuity Connector Terminal M40 34 No Is inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK CAMERA POWER SUPPLY VOLTAGE Connect audio unit connector M40 and rear view camera connector. Turn ignition switch ON. Shift the selector lever to R (reverse). Check voltage between audio unit connector M40 and ground. Audio unit Ground Condition Voltage (Approx.) (+) (-) Connector Terminal M40 34 - Selector lever is in "R". 6.0 V Is inspection result normal? YES: GO TO 4. NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ".
  4. CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY Turn ignition switch OFF. Disconnect audio unit connector M40 and rear view camera connector. Check continuity between audio unit connector M40 and rear view camera connector D501. Audio unit Rear view camera Continuity Connector Terminal Connector Terminal M40 35 D501 4 Yes Check continuity between audio unit connector M40 and ground. Audio unit Ground Continuity Connector Terminal M40 35 No Is inspection result normal? YES: GO TO 5. NO: Repair or replace harness or connectors.
  5. CHECK CAMERA GROUND CIRCUIT CONTINUITY Check continuity between audio unit connector M40 and rear view camera connector D501. Audio unit Rear view camera Continuity Connector Terminal Connector Terminal M40 33 D501 1 Yes Is inspection result normal? YES: GO TO 6. NO: Repair or replace harness or connectors.
  6. CHECK CAMERA IMAGE SIGNAL Connect audio unit connector M40 and rear view camera connector. Turn ignition switch ON. Shift the selector lever to R (reverse). Check signal between audio unit connector M40 and ground. Audio unit Ground Condition Reference value (+) (-) Connector Terminal M40 35 - Camera image displayed. Is inspection result normal? YES: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ". NO: Replace rear view camera. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S10925277182014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK HARNESS BETWEEN BLUETOOTH® CONTROL UNIT AND MICROPHONE Turn ignition switch OFF. Disconnect Bluetooth® control unit connector B33 and microphone connector R15. Check continuity between Bluetooth® control unit connector B33 and microphone connector R15. Bluetooth® control unit Microphone Continuity Connector Terminal Connector Terminal B33 7 R15 1 Yes 8 2 29 4 Check continuity between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Continuity Connector Terminal B33 7 - No 29 Are continuity results as specified? YES: GO TO 2. NO: Repair harness or connectors.
  2. CHECK MICROPHONE POWER SUPPLY Connect Bluetooth® control unit connector B33 and microphone connector R15. Turn ignition switch ON. Check voltage between microphone connector R15 and ground. Microphone Ground Voltage (Approx.) (+) (-) Connector Terminal R15 4 - 5V Is the voltage reading as specified? YES: GO TO 3. NO: Replace Bluetooth® control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S35295769732014120500000) ".
  3. CHECK MICROPHONE SIGNAL Check signal between terminals of Bluetooth® control unit connector B33. Bluetooth® control unit connector B33 Condition Reference value (+) (-) Terminal Terminal 7 8 Speak into microphone. Were voltage readings as specified? YES: Replace Bluetooth® control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S35295769732014120500000) ". NO: Replace microphone. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15374004332014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE Turn ignition switch OFF. Disconnect combination switch connector M88. Check resistance between the terminals of combination switch connector M88. Combination switch connector M88 Condition Resistance ohms (Approx.) Terminal Terminal 14 17 Depress SOURCE switch. 1 Depress switch. 121 Depress switch. 321 Depress switch. 723 15 Depress - switch. 1 Depress + switch. 121 Depress switch. 321 Is the inspection result normal? YES: GO TO 2. NO: Replace steering switches. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S12481344832014120500000) ".
  2. CHECK HARNESS BETWEEN BLUETOOTH® CONTROL UNIT AND COMBINATION SWITCH Disconnect Bluetooth® control unit connector B33 and combination switch connector M30. Check continuity between Bluetooth® control unit connector B33 and combination switch connector M30. Bluetooth® control unit Combination switch Continuity Connector Terminal Connector Terminal B33 12 M30 24 Yes 13 31 14 33 Check continuity between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Continuity Connector Terminal B33 12 - No 13 14 Is the inspection result normal? YES: GO TO 3. NO: Repair or replace harness or connectors.
  3. CHECK COMBINATION SWITCH Check continuity between combination switch connectors M88 and M30. Combination switch Continuity Connector Terminal Connector Terminal M88 14 M30 24 Yes 15 31 17 33 Is the inspection result normal? YES: GO TO 4. NO: Replace spiral cable. Refer to " «REMOVAL AND INSTALLATION»(ref-675573-S26258277352014120500000) ".
  4. CHECK HARNESS BETWEEN BLUETOOTH® CONTROL UNIT AND AUDIO UNIT Disconnect audio unit connector M45. Check continuity between Bluetooth® control unit connector B33 and audio unit connector M45. Bluetooth® control unit Audio unit Continuity Connector Terminal Connector Terminal B33 17 M45 6 Yes 18 16 19 15 Check continuity between Bluetooth® control unit connector B33 and ground. Bluetooth® control unit Ground Continuity Connector Terminal B33 17 - No 18 19 Is the inspection result normal? YES: GO TO 5. NO: Repair or replace harness or connectors.
  5. CHECK AUDIO UNIT VOLTAGE Connect Bluetooth® control unit connector B33 and audio unit connector M45. Turn ignition switch ON. Check voltage between the terminals of audio unit connector M45. Audio unit connector M45 Voltage (Approx.) Terminal Terminal 6 15 5.0 V 16 Is the inspection result normal? YES: Replace Bluetooth® control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S35295769732014120500000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S15276131922014120500000) ".

Regarding Wiring Diagram information, refer to " WIRING DIAGRAM ".

  1. CHECK USB INTERFACE HARNESS CONTINUITY Turn ignition switch OFF. Disconnect audio unit connector M44 and USB interface connector M72. Check continuity between audio unit connector M44 and USB interface connector M72. Audio unit USB interface Continuity Connector Terminal Connector Terminal M44 53 M72 4 Yes 54 1 55 2 56 3 57 5 Check continuity between audio unit connector M44 and ground. Audio unit - Continuity Connector Terminal M44 53 Ground No 55 Is the inspection result normal? YES: Replace the USB interface. Refer to " «REMOVAL AND INSTALLATION»(ref-675623-S19303449532014120500000) ". NO: Repair or replace harness or connectors.

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