Nissan Sentra B18 (2020-2025) Service Manual: Normal Operating Condition
Description
RELATED TO NOISE
The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference, etc.).
The following noise results from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other sources. It is not a malfunction.
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Fading noise: This noise occurs because of variations in the field strength in a narrow range due to mountains or buildings blocking the signal.
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Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the antenna at a different time from the waves which reflect off mountains or buildings.
The Nissan Sentra vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning. Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and operation of each piece of electrical equipment, and determine the cause.
Note:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical components, one by one.
Type of Noise and Possible Cause
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Occurrence condition |
Possible cause |
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|---|---|---|
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Occurs only when engine is ON. |
A continuous growling noise occurs. The speed of the noise varies with changes in the engine speed. |
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The occurrence of the noise is linked with the operation of the fuel pump. |
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Noise only occurs when various electrical components are operating. |
A cracking or snapping sound occurs with the operation of various switches. |
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The noise occurs when various motors are operating. |
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The noise occurs constantly, not just under certain conditions. |
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A cracking or snapping sound occurs while the Nissan Sentra vehicle is being driven, especially when it is vibrating excessively. |
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RELATED TO HANDS-FREE PHONE
|
Symptom |
Cause and Counter measure |
|---|---|
|
Does not recognize cellular phone connection (No connection is displayed on the display at the guide). |
Some Bluetooth® enabled cellular phones may not be recognized by the in-Nissan Sentra vehicle phone module. Refer to “RELATED TO HANDS-FREE PHONE (Check Compatibility)” in Symptom Table. |
|
Cannot use hands-free phone. |
Customer will not be able to use a hands-free phone under the following conditions:
While a cellular phone is connected through the Bluetooth® wireless connection, the battery power of the cellular phone may discharge quicker than usual. The Bluetooth® Hands-Free Phone System cannot charge cellular phones. |
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The other party’s voice cannot be heard by hands-free phone. |
When the radio wave condition is not ideal or ambient sound is too loud, it may be difficult to hear the other person’s voice during a call. |
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Poor sound quality. |
Do not place the cellular phone in an area surrounded by metal or far away from the in-Nissan Sentra vehicle phone module to prevent tone quality degradation and wireless connection disruption. |
Multi Av System
Symptom Table
Symptom Table
RELATED TO AUDIO
Symptoms
Check items
Probable ...
Other materials:
Mixture ratio self-learning value
clear
Description
This describes how to erase the mixture ratio self-learning value. For the
actual procedure, follow the instructions
in “Diagnosis Procedure”.
Work Procedure
1.START
With CONSULT
Start engine and warm it up to normal operating temperature.
Select “SELF-LEARNI ...
Locking with power door lock switch
Door lock switch
To lock all the doors without a key, push the door
lock switch (driver’s or front passenger’s side) to
the lock position 1 . When locking the door this
way, be certain not to leave the key inside the
vehicle.
To unlock all the doors without a key, push the
door lock ...
Av Control Unit
List of Ecu Reference
List of ECU Reference
ECU
Reference
AV control unit
Values on the Diagnosis Tool
...
