Nissan Sentra B18 (2020-2025) Service Manual: Additional Service When Replacing Control Unit (bcm)
Description
CAUTION:
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Be sure to perform the configuration saving and writing or reregistration when replacing the BCM.
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When replacing the BCM, always replace it with a new one. The functions controlled by the BCM may not operate properly in case of reuse of the BCM from another Nissan Sentra vehicle.
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Before pairing of the BCM and Intelligent Key unit, always write BCM configuration, or not doing so, the BCM control function will not operate normally.
Work Procedure
BEFORE REPLACEMENT
When replacing the BCM, save or print current vehicle specifications with CONSULT before replacement.
Note:
If “Before ECU Replacement” of “Nissan Sentra Vehicle Configuration” cannot be used, use “Manual Configuration” after replacing the BCM.
AFTER REPLACEMENT
CAUTION:
After replacing the BCM, always perform “Operation Log Selection” or “Manual Configuration” with CONSULT, or not doing so, the BCM control function will not operate normally.
After installing a new BCM service part, if the Intelligent Key UNLOCK button is pressed before performing the configuration with CONSULT, certain BCM configuration parameters will be permanently locked in the default setting; one of these parameters is remote engine start.
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Complete the procedure of “Re/programming, Configuration” in order.
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Configuration is different for each Nissan Sentra vehicle model. Confirm configuration of each vehicle model.
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If you set incorrect “Vehicle Configuration”, incidents might occur.
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It is not necessary to register Intelligent Keys to a new BCM.
Work Procedure
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SAVING Nissan Sentra Vehicle SPECIFICATION
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CONSULT-
Select “Re/programming, Configuration”.
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Select the operation according to the CONSULT screen.
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Perform “Before ECU Replacement” of “Nissan Sentra Vehicle Configuration” to write vehicle specification.
If “Before ECU Replacement” of “Nissan Sentra Vehicle Configuration” cannot be used, use the “Manual Configuration” after replacing BCM. Refer to Work Procedure.
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GO TO 2.
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REPLACE BCM
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Replace BCM. Refer to Removal and Installation.
GO TO 3.
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WRITING Nissan Sentra Vehicle SPECIFICATION
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CONSULT
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Select “Re/programming, Configuration”.
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Select the operation according to the reference. Refer to Work Procedure.
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GO TO 4.
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PAIRING OF BCM AND INTELLIGENT KEY UNIT
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CAUTION:
When before pairing of BCM and Intelligent Key unit, always write the BCM configuration, or not doing so, the BCM control function will not operate normally.
Perform pairing of BCM and Intelligent Key unit. Press UNLOCK button of Intelligent Key.
GO TO 5.
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REGISTER OF Nissan Sentra Vehicle IDENTIFICATION NUMBER
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CONSULT
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Select “VIN REGISTRATION” in "Work Support" mode of "BCM".
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Refer to CONSULT and follow the on-screen instructions.
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GO TO 6.
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TIRE PRESSURE SENSOR ID REGISTRATION
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Perform tire pressure sensor ID registration procedure. Refer to Work Procedure.
Work End.
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Configuration (bcm)
Description
Description
Vehicle specifications need to be written with
CONSULT, because it is the not automatically write after replacing
the BCM.
Configuration as follows:
...
Other materials:
Avoiding collision and rollover
WARNING
Failure to operate the Nissan Sentra in a safe, attentive, and prudent manner
may result in loss of vehicle control, a serious accident, or a rollover.
Always remain alert and practice defensive driving techniques whenever operating
your Nissan Sentra.
Strictly obey all traffic laws a ...
Dtc Confirmation Procedure
DTC Confirmation
Procedure
PERFORM DTC CONFIRMATION
CONSULT
Ignition switch ON.
CAUTION:
Never start the engine.
...
Abs branch line circuit
Diagnosis Procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the abs actuator and electric unit
(control unit) for damage, bend
and loose connection (unit side and connector side).
...
