Infiniti QX56 (Z62). Manual - part 1390

WW-38

< DTC/CIRCUIT DIAGNOSIS >

FRONT WIPER AUTO STOP SIGNAL CIRCUIT

FRONT WIPER AUTO STOP SIGNAL CIRCUIT

Component Function Check

INFOID:0000000006300472

1.

CHECK FRONT WIPER (AUTO STOP) SIGNAL

CONSULT-III DATA MONITOR

1.

Select “WIP AUTO STOP” of IPDM E/R data monitor item.

2.

Operate the front wiper.

3.

With the front wiper operation, check the monitor status.

Is the status of item normal?

YES

>> Auto stop signal circuit is normal.

NO

>> Refer to 

WW-38, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006300473

1.

CHECK IPDM E/R OUTPUT VOLTAGE

1.

Turn ignition switch OFF.

2.

Disconnect front wiper motor connector.

3.

Turn ignition switch ON.

4.

Check voltage between front wiper motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace front wiper motor.

NO

>> GO TO 2.

2.

CHECK FRONT WIPER MOTOR (AUTO STOP) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between IPDM E/R harness connector and front wiper motor harness connector.

4.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace harness.

Monitor item

Condition

Monitor status

WIP AUTO STOP

Front wiper motor

Stop position

STOP P

Except stop position

ACT P

(+)

(

−

)

Voltage (Approx.)

Front wiper motor

Connector

Terminal

E42

5

Ground

Battery voltage

IPDM E/R 

Front wiper motor

Continuity

Connector

Terminal

Connector

Terminal

E13

25

E42

5

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E13

25

Not existed

FRONT WIPER MOTOR GROUND CIRCUIT

WW-39

< DTC/CIRCUIT DIAGNOSIS >

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FRONT WIPER MOTOR GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000006300474

1.

CHECK FRONT WIPER MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front wiper motor connector.

3.

Check continuity between front wiper motor harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace harness.

Front wiper motor

Ground

Continuity

Connector

Terminal

E42

2

Existed

WW-40

< DTC/CIRCUIT DIAGNOSIS >

LIGHT & RAIN SENSOR

LIGHT & RAIN SENSOR

Component Function Check

INFOID:0000000006300475

1.

CHECK FRONT WIPER AUTO OPERATION

1.

Clean light & rain sensor detection area of windshield fully.

2.

When the front wiper switch is turned to AUTO position, front wiper operates once regardless of a rainy
condition.

Is front wiper (AUTO) operation normally?

YES

>> Light & rain sensor circuit is normal.

NO

>> Refer to 

WW-40, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006300476

1.

CHECK LIGHT & RAIN SENSOR FUSE

1.

Turn the ignition switch OFF.

2.

Check that the light & 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 LIGHT & RAIN SENSOR POWER SUPPLY

1.

Disconnect light & rain sensor connector.

2.

Check voltage between light & rain sensor harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK LIGHT & RAIN SENSOR GROUND CIRCUIT

Check continuity between light & rain sensor harness connector and ground.

Does continuity exist?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK LIGHT & RAIN SENSOR SIGNAL

1.

Connect light & rain sensor connector.

2.

Turn ignition switch ON.

3.

Check signal between BCM harness connector and ground with oscilloscope.

(+)

(

−

)

Voltage (Approx.)

Light & rain sensor

Connector

Terminal

R9

1

Ground Battery 

voltage

Light & rain sensor

Ground

Continuity

Connector

Terminal

R9

3

Existed

LIGHT & RAIN SENSOR

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< DTC/CIRCUIT DIAGNOSIS >

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Is the measurement value normal?

YES

>> Replace light & rain sensor.

NO

>> GO TO 5.

5.

CHECK LIGHT & RAIN SENSOR SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector and light & rain sensor connector.

3.

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

Does continuity exist?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

6.

CHECK LIGHT & 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-81, "Removal and Installation"

.

(+)

(

−

)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M68

11

Ground 

Ignition switch ON

Approx. 8.7V

JPMIA0156GB

BCM

Light & rain sensor

Continuity

Connector

Terminal

Connector

Terminal

M68

11

R9

2

Existed

BCM

Ground

Continuity

Connector

Terminal

M68

11

Not existed