Nissan Sentra. Manual - part 940

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SYSTEM

SYSTEM

System Diagram

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System Description

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FRONT WIPER CONTROL (BASIC)

1. BCM detects the combination switch position by the combination switch reading function.

2. BCM transmits the front wiper request signal to the IPDM E/R using CAN communication.

3. IPDM E/R controls the integrated front wiper relay and front wiper high relay based on the status of the

front wiper request signal.

4. IPDM E/R provides power to operate the front wiper motor.

LOW SPEED OPERATION

1. Ignition switch ON.

2. Front wiper switch in LO or MIST position.

3. BCM reads the combination switch position and transmits the front wiper request signal (LO) to IPDM E/R

using CAN communication.

4. IPDM E/R turns ON the front wiper relay.

HIGH SPEED OPERATION

1. Ignition switch ON.

2. Front wiper switch in HI.

3. BCM reads the combination switch position and transmits the front wiper request signal (HI) to IPDM E/R

using CAN communication.

4. IPDM E/R turns ON the front wiper relay and the front wiper high relay.

INTERMITTENT OPERATION

1. Ignition switch ON.

2. Front wiper switch INT.

3. BCM reads the combination switch position. BCM calculates the delay interval based on the table below

and then transmits the front wiper request signal (INT) to IPDM E/R using CAN communication.

4. IPDM E/R turns ON the front wiper relay only once.

5. BCM detects stop position of the front wiper motor based on the front wiper stop position signal received

from the IPDM E/R.

6. BCM transmits the front wiper request signal (INT) again after the delay interval.

ABLIA2794GB

SYSTEM

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AUTO STOP OPERATION

1. Front wiper switch is turned OFF.

2. BCM monitors wiper switch position by combination switch reading position function.

3. BCM stops transmitting the front wiper request signal to the IPDM E/R.

4. IPDM E/R detects the front wiper auto stop signal from the position of the front wiper motor (stop position/

except stop position).

5. When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front

wiper motor returns to the stop position.

6. IPDM E/R turns the front wiper relay OFF when the front wiper motor has reached the stop position.

MIST OPERATION

1. Ignition switch ON.

2. Front washer switch in OFF position.

3. Front wiper switch in MIST position.

4. BCM reads the combination switch position and transmits the front wiper request signal (LO) to IPDM E/R

using CAN communication.

5. IPDM E/R turns ON the front wiper relay.

6. The front wiper operates once after the front washer operation.

WIPER/WASHER OPERATION

1. Ignition switch ON.

JPLIA0094GB

Intermittent switch position

Length of delay

Delay interval (s)

7

Short

↑

↓

Long

0.4

6

1

5

2

4

3

3

5

2

10

1

16

JPLIA0095GB

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SYSTEM

2. Front washer switch ON.

3. The front washer switch provides ground for the front washer motor.

4. BCM reads the combination switch position and transmits the front wiper request signal (LO) to IPDM E/R

using CAN communication.

5. BCM transmits the front wiper request signal (LO) to IPDM E/R using CAN communication.

6. IPDM E/R turns ON the front wiper relay.

7. The front wiper operates.

NOTE:

BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 3 times after

front washer switch OFF is detected.

Fail-Safe

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FAIL

−SAFE OPERATION

IPDM E/R performs the fail-safe function when the front wiper auto stop circuit is malfunctioning. Refer to

PCS-19, "Fail-safe"

 (with Intelligent Key system) or 

PCS-47, "Fail-Safe"

 (without Intelligent Key system).

DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

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DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)

COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

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APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

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

Sub System

Direct Diagnostic Mode

ECU id

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CAN DIAG SUP

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Door lock

DOOR LOCK

×

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

×

Air conditioner

AIR CONDITIONER

×

Intelligent Key system

INTELLIGENT KEY

×

×

×

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×