Infiniti QX56 (JA60). Manual - part 1049

WW-72

< SYMPTOM DIAGNOSIS >

WIPER AND WASHER SYSTEM SYMPTOMS

Front wiper does not 
stop.

HI only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
"FR WIP REQ"

IPDM E/R

—

LO only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
"FR WIP REQ"

IPDM E/R

—

INT only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
"FR WIP REQ"

Front wiper does not 
operate normally.

Intermittent adjustment 
cannot be performed.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

BCM

—

Intermittent control 
linked with vehicle 
speed cannot be per-
formed.

Check the vehicle speed detection wiper setting.
Refer to 

BCS-23, "WIPER : CONSULT-III Function (BCM - WIPER)"

.

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

BCM

—

Does not return to stop 
position (Repeatedly 
operates for 10 sec-
onds and then stops 
for 20 seconds. After 
that, it stops the opera-
tion).

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper auto stop signal 
circuit
Refer to 

WW-23, "Compo-

nent Function Check"

.

Rear wiper does not 
operate.

ON only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

INT only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

ON and INT

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

• BCM
• Harness between rear wiper motor and BCM
• Harness between rear wiper motor and ground
• Rear wiper motor
• Glass hatch ajar switch

Combination switch
Refer to 

WW-28, "Compo-

nent Function Check"

.

Symptom

Probable malfunction location

Inspection item

WIPER AND WASHER SYSTEM SYMPTOMS

WW-73

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

WW

N

O

P

Rear wiper does not 
stop.

ON only

• Combination switch
• BCM

Rear wiper motor circuit
Refer to 

WW-28, "Compo-

nent Function Check"

.

INT only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

Rear wiper does not 
operate normally.

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between rear wiper motor and BCM
• BCM

Combination switch
Refer to 

BCS-56, "Symptom 

Table"

.

BCM

—

Rear wiper does not 
return to the Stop posi-
tion (Stops after a five-
second operation).

• BCM
• Harness between rear wiper motor and BCM
• Rear wiper motor

Rear wiper auto stop signal 
circuit
Refer to 

WW-30, "Compo-

nent Function Check"

.

Rear wiper stops after 
operating for five sec-
onds when ignition 
switch is turned ON.

Symptom

Probable malfunction location

Inspection item

WW-74

< SYMPTOM DIAGNOSIS >

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000005146797

FRONT WIPER MOTOR PROTECTION FUNCTION

• IPDM E/R may stop the front wiper to protect the front wiper motor if any obstruction (operation resistance)

such as a large amount of snow is detected during the front wiper operation.

• At that time turn OFF the front wiper and remove the foreign object. Then wait for approximately 20 seconds

or more and reactivate the front wiper. The wiper will operate normally.

REAR WIPER MOTOR PROTECTION FUNCTION

• BCM may stop rear wiper to protect the rear wiper motor when the rear wiper is stopped for 5 seconds or

more due to a snowfall.

• Rear wiper operates normally one minute after the obstacles are removed with rear wiper OFF.

FRONT WIPER DOES NOT OPERATE

WW-75

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

WW

N

O

P

FRONT WIPER DOES NOT OPERATE

Description

INFOID:0000000005146798

The front wiper does not operate under any operation conditions.

Diagnosis Procedure

INFOID:0000000005146799

Regarding Wiring Diagram information, refer to 

WW-31, "Wiring Diagram"

.

1.

 CHECK WIPER RELAY OPERATION

IPDM E/R AUTO ACTIVE TEST

1. Start IPDM E/R auto active test. Refer to 

PCS-8, "System Description"

.

2. Check that the front wiper operates at the LO/HI operation.

CONSULT-III ACTIVE TEST

1. Select "FRONT WIPER" of IPDM E/R active test item.

2. While operating the test item, check front wiper operation.

Is front wiper operation normal?

YES

>> GO TO 5

NO

>> GO TO 2

2.

 CHECK FRONT WIPER MOTOR FUSE

1. Turn the ignition switch OFF.

2. Check that the following fuse is not blown.

Is the fuse blown?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 3

3.

 CHECK FRONT WIPER MOTOR GROUND OPEN CIRCUIT 

1. Disconnect front wiper motor.

2. Check continuity between front wiper motor harness connector

and ground.

Does continuity exist?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

 CHECK FRONT WIPER MOTOR OUTPUT VOLTAGE

CONSULT-III ACTIVE TEST

LO

: Front wiper LO operation

HI

: Front wiper HI operation

OFF

: Stop the front wiper.

Unit

Location

Fuse No.

Capacity

Front wiper motor

IPDM E/R

39

30 A

Front wiper motor

Ground

Continuity

Connector

Terminal

E23

1

Yes

WKIA2828E