Nissan Sentra Service Manual: Diagnosis system (BCM)

Nissan Sentra Service Manual / Body exterior, doors, roof & vehicle security / Security control system / Without intelligent key system / Diagnosis system (BCM)

Common item

Common item : consult function (bcm - common item)

Application item

Consult performs the following functions via can communication with bcm.

Direct diagnostic mode	Description
ECU identification	The bcm part number is displayed.
Self Diagnostic Result	The BCM self diagnostic results are displayed.
Data monitor	The bcm input/output data is displayed in real time.
Active test	The BCM activates outputs to test components.
Work support	The settings for bcm functions can be changed.
Configuration	The vehicle specification can be read and saved. The vehicle specification can be written when replacing bcm.
CAN DIAG SUPPORT MNTR	The result of transmit/receive diagnosis of can communication is displayed.

System application

Bcm can perform the following functions.

Immu

Immu

Immu : consult function (bcm - immu)

Self diagnostic result

Refer to bcs-109, "dtc index".

Active test

Work support

Work support

Diagnosis system (IPDM E/R)

Diagnosis system (IPDM E/R)

Diagnosis description

Auto active test

Description

In auto active test, the ipdm e/r sends a drive signal to the following systems to check their operation.
Front wiper (LO, HI)
Parking lamp
License plate lamp
Tail lamp
Front fog lamp (if equipped)
Headlamp (LO, HI)
A/C compressor (magnet clutch) (if equipped)
Cooling fan

Operation Procedure

NOTE:

Never perform auto active test in the following conditions.

Passenger door is open
CONSULT is connected

Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper operation)

NOTE:

When auto active test is performed with hood opened, sprinkle water on windshield beforehand.

Turn the ignition switch OFF.
Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the ignition switch OFF.
Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test starts.
After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:

When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
When auto active test is not activated, door switch may be the cause. Check door switch. Refer to DLK-255, "Component Inspection".

Inspection in Auto Active Test

When auto active test is actuated, the following operation sequence is repeated 3 times.

Concept of Auto Active Test

Concept of Auto Active Test

IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communication.
Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto active test starts successfully.
The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis Chart in Auto Active Test

Consult function (ipdm e/r)

Consult function (ipdm e/r)

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with IPDM E/R.

Direct Diagnostic Mode	Description
Ecu Identification	The IPDM E/R part number is displayed.
Self Diagnostic Result	The IPDM E/R self diagnostic results are displayed.
Data Monitor	The IPDM E/R input/output data is displayed in real time.
Active Test	The IPDM E/R activates outputs to test components.
CAN Diag Support Mntr	The result of transmit/receive diagnosis of CAN communication is displayed.

Ecu identification

The IPDM E/R part number is displayed.

SELF DIAGNOSTIC RESULT

Refer to PCS-48, "DTC Index".

DATA MONITOR

ACTIVE TEST

ACTIVE TEST

CAN DIAG SUPPORT MNTR

CAN DIAG SUPPORT MNTR

Refer to LAN-13, "CAN Diagnostic Support Monitor".

System description

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