Nissan Altima L32. Manual - part 1583

DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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8.

 DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 9

NO

>> Check voltage of related BCM terminals using CONSULT-III.

9.

 REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 10

10.

 FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction have been repaired securely.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that

the symptom is not detected.
Does the symptom reappear?

YES (DTC is detected)>>GO TO 8

YES (Symptom remains)>>GO TO 6

NO

>> Inspection End.

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< FUNCTION DIAGNOSIS >

FRONT WIPER AND WASHER SYSTEM

FUNCTION DIAGNOSIS

FRONT WIPER AND WASHER SYSTEM

System Diagram

INFOID:0000000004202186

System Description

INFOID:0000000004202187

OUTLINE

The front wiper is controlled by each function of BCM and IPDM E/R.

Control by BCM

• Combination switch reading function

• Front wiper control function

Control by IPDM E/R

• Front wiper control function

• Relay control function

FRONT WIPER BASIC OPERATION 

• BCM detects the combination switch condition by the combination switch reading function.

• BCM transmits the front wiper request signal to IPDM E/R with CAN communication depending on each

operating condition of the front wiper.

• IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front

wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.

FRONT WIPER LO OPERATION

• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the

front wiper LO operating condition.

Front wiper LO operating condition

- Ignition switch ON

- Front wiper switch LO or front wiper switch MIST (while pressing)

• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

FRONT WIPER HI OPERATION

• BCM transmits the front wiper request signal (HI) to IPDM E/R with CAN communication according to the

front wiper HI operating condition.

Front wiper HI operating condition

- Ignition switch ON

- Front wiper switch HI

• IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper

request signal (HI).

FRONT WIPER INT OPERATION

• BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication depending on the

front wiper INT operating condition and intermittent operation delay interval according to the wiper intermit-

tent dial position.

Front wiper INT operating condition

- Ignition switch ON

- Front wiper switch INT

ALCIA0043GB

FRONT WIPER AND WASHER SYSTEM

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< FUNCTION DIAGNOSIS >

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• IPDM E/R turns ON the integrated front wiper relay so that the front wiper is operated only once according to

the front wiper request signal (INT).

• BCM detects stop position/except stop position of the front wiper motor according to the front wiper auto stop

signal received from IPDM E/R with CAN communication.

• BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.

NOTE:

Front wiper intermittent operation can be set to the operation with vehicle speed by CONSULT-III. Refer to

BCS-26, "WIPER : CONSULT - III Function"

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Front wiper intermittent operation with vehicle speed

• BCM calculates the intermittent operation delay interval from the following

- Vehicle speed signal (received from the combination meter with CAN communication)

- Wiper intermittent dial position

*: When without vehicle speed setting

FRONT WIPER AUTO STOP OPERATION

• BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.

• IPDM E/R detects the front wiper auto stop signal from the front wiper motor and detects the front wiper

motor position (stop position/except stop position).

Wiper intermittent dial posi-

tion

Intermittent 

operation 

interval

Intermittent operation delay Interval (s)

Vehicle speed

Vehicle stopped or 

less than 5 km/h 

(3.1 MPH)

5 km/h (3.1MPH) 

or more or less 

than 35km/h (21.7 

MPH)

35 km/h (21.7 

MPH) or more or 

less than 65km/h 

(40.4 MPH)*

65 km/h 

(40.4MPH) or 

more

1

Short

↑

↓

Long

0.8

0.6

0.4

0.24

2

4

3

2

1.2

3

10

7.5

5

3

4

16

12

8

4.8

5

24

18

12

7.2

6

32

24

16

9.6

7

42

31.5

21

12.6

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< FUNCTION DIAGNOSIS >

FRONT WIPER AND WASHER SYSTEM

• 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.

NOTE:

• BCM stops the transmitting of the front wiper request signal when the ignition switch OFF.

• IPDM E/R turns the front wiper relay OFF when the ignition switch OFF.

FRONT WIPER OPERATION LINKED WITH WASHER

• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the

washer linked operating condition of the front wiper.

• BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 2 times

when the front washer switch OFF is detected.

Washer linked operating condition of front wiper

- Ignition switch ON

- Front washer switch ON (0.4 second or more)

• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

• The front washer motor is grounded through the combination switch when the front washer switch is ON.

FRONT WIPER FAIL

−SAFE OPERATION

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

PCS-43, "Fail Safe"

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