Infiniti FX35, FX50 (S51). Manual - part 1953

WASHER SWITCH

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WASHER SWITCH

Description

INFOID:0000000005234761

• Washer switch is integrated with combination switch.
• Combination switch switches polarity between front washer operating and rear washer operating to supply

power to the washer pump on ground.

Component Inspection

INFOID:0000000005234762

1.

CHECK WIPER SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect combination switch connector.

3.

Check continuity between the combination switch terminals.

Does continuity exist?

YES

>> Wiper and washer switch is normal.

NO

>> Replace combination switch (Wiper and washer switch).

JPLIA0163GB

A

:  Terminal  4

B

:  Terminal  6

C

:  Terminal  3

D

:  Terminal  1

JPLIA0164GB

Combination switch

Condition

Continuity

Terminal

1

6

Front washer switch ON

Existed

3

4

1

4

Rear washer switch ON

3

6

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RAIN SENSOR

RAIN SENSOR

Description

INFOID:0000000005234763

Rain sensor judges a wiping speed for front wiper by rain condition
and the vehicle conditions. And it transmits the wiping speed request
signal to the BCM via the rain sensor serial link.

Component Function Check

INFOID:0000000005234764

1.

CHECK FRONT WIPER AUTO OPERATION

1.

Clean rain sensor detection area of windshield fully.

2.

When the front wiper switch is turned to INT position, front wiper operates once regardless of a rainy con-
dition.

Is front wiper (AUTO) operation normally?

YES

>> Rain sensor circuit is normal.

NO

>> Refer to 

WW-36, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005234765

1.

CHECK RAIN SENSOR FUSE

1.

Turn the ignition switch OFF.

2.

Check that the rain sensor 10A fuse (#6) is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 2.

2.

CHECK RAIN SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect rain sensor connector.

3.

Turn ignition switch ON.

4.

Check voltage between rain sensor harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK RAIN SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between rain sensor harness connector and ground.

JPLIA1188ZZ

Terminal

Voltage (Approx.)

(+)

(

−

)

Rain sensor connector

Terminal

R9

1

Ground Battery 

voltage

RAIN SENSOR

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Does continuity exist?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK RAIN SENSOR SIGNAL

1.

Connect rain sensor connector.

2.

Turn ignition switch ON.

3.

Check signal between BCM harness connector and ground with oscilloscope.

Is the measurement value normal?

YES

>> Replace rain sensor. Refer to 

WW-124, "Exploded View"

.

NO

>> GO TO 5.

5.

CHECK RAIN SENSOR SIGNAL CIRCUIT FOR OPEN

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector and rain sensor harness connector.

Does continuity exist?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

6.

CHECK RAIN SENSOR SIGNAL CIRCUIT FOR SHORT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Repair or replace harness.

NO

>> Replace BCM. Refer to 

BCS-83, "Exploded View"

.

Rain sensor

Ground

Continuity

Connector

Terminal

R9

3

Existed

Terminal

Condition

Signal

(Reference value)

(+)

(

−

)

BCM

connector

Terminal

M123

112

Ground 

Ignition 

switch ON

Approx. 8.7V

JPMIA0156GB

BCM

Rain sensor

Continuity

Connector

Terminal

Connector

Terminal

M123

112

R9

2

Existed

BCM

Ground

Continuity

Connector

Terminal

M123

112

Not existed

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REAR WIPER MOTOR CIRCUIT

REAR WIPER MOTOR CIRCUIT

Component Function Check

INFOID:0000000005234766

1.

CHECK REAR WIPER ON OPERATION

CONSULT-III ACTIVE TEST

1.

Select “RR WIPER” of BCM active test item.

2.

With operating the test item, check rear wiper operation.

Is rear wiper operation normally?

YES

>> Rear wiper motor circuit is normal.

NO

>> Refer to 

WW-38, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005234767

1.

CHECK REAR WIPER MOTOR OUTPUT VOLTAGE

CONSULT-III ACTIVE TEST

1.

Turn the ignition switch OFF.

2.

Disconnect rear wiper motor connector.

3.

Turn the ignition switch ON.

4.

Select “RR WIPER” of BCM active test item.

5.

With operating the test item, check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK REAR WIPER MOTOR SHORT CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Repair the harness or connector.

NO

>> Replace BCM. Refer to 

BCS-83, "Exploded View"

.

3.

CHECK REAR WIPER MOTOR OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector and rear wiper motor harness connector.

On

: Rear wiper ON operation

Off

: Stop the rear wiper.

Terminals

Test item

Voltage (Approx.)

(+)

(

−

)

BCM

Ground

REAR WIPER

Connector

Terminal

M120

26

On

Battery voltage

Off

0 V

BCM

Ground

Continuity

Connector

Terminal

M120

26

Not existed