Infiniti QX56 (Z62). Manual — part 1390
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< 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
.
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
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< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
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N
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P
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
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< 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
.
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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D
E
F
G
H
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K
M
A
B
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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
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