Nissan Cube. Manual - part 1042

DIAGNOSIS AND REPAIR WORK FLOW

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< BASIC INSPECTION >

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Is the symptom described?

YES

>> GO TO 7.

NO

>> Monitor input data from related sensors or check voltage of related module terminals using CON-

SULT.

7.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-40, "Intermittent Incident"

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8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

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< SYSTEM DESCRIPTION >

FRONT WIPER AND WASHER SYSTEM

SYSTEM DESCRIPTION

FRONT WIPER AND WASHER SYSTEM

System Diagram

INFOID:0000000009945815

System Description

INFOID:0000000009945816

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
Combination meter indicates low washer fluid warning judged with the signal from the washer level switch. For
details of low washer fluid warning, refer to 

MWI-24, "INFORMATION DISPLAY : System Description"

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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).

JPLIA1515GB

FRONT WIPER AND WASHER SYSTEM

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< SYSTEM DESCRIPTION >

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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
• 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 stop

position 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:
Factory setting of the front wiper intermittent operation is the operation without vehicle speed. Front wiper
intermittent operation can be set to the operation with vehicle speed by CONSULT. Refer to 

WW-14, "WIPER :

CONSULT Function (BCM - WIPER)"

 (with Intelligent Key) or 

WW-16, "WIPER : CONSULT Function (BCM -

WIPER)"

 (without Intelligent Key).

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

Unit: Second

*: 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 stop position signal from the front wiper motor and detects the front wiper

motor position (stop position/except stop position).

Wiper intermittent 

dial position

Intermittent 

operation 

interval

Intermittent operation delay Interval

Vehicle speed

0 – 5 km/h

(0 – 3.1 MPH)

5 – 35 km/h

(3.1 – 21.7 MPH)

35 – 65 km/h

(21.7 – 40.4 MPH)*

65 km/h (40.4 MPH) 

or more

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Short

↑

↓

Long

0.8

0.6

0.4

0.24

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2

1.2

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10

7.5

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12.6

JPLIA1256GB

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< SYSTEM DESCRIPTION >

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 is OFF.
• IPDM E/R turns the front wiper relay OFF when the ignition switch is 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 washer pump is grounded through the combination switch with the front washer switch ON.

FRONT WIPER FAIL

−

SAFE OPERATION

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

PCS-30, "Fail-Safe"

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JPLIA0410GB