Ins INFINITI QX56 2004 Factory Service Manual

REAR WIPER AND WASHER SYSTEM
WW-41
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
How to Proceed With Trouble DiagnosisEKS007FS
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-33, "
System Description" .
3. Perform the Preliminary Check. Refer to WW-41, "
Preliminary Inspection" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the rear wiper operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary InspectionEKS007FT
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
Inspection procedure
1. CHECK FUSE
Check if wiper or washer fuse is blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
55 SB Rear wiper output circuit 1 ONRise up position (rear wiper arm on
stopper)0V (except battery voltage at ini-
tial rear wiper ON to lift arm off
stop)
A Position (full clockwise stop
position)Battery voltage
Forward sweep (counterclockwise
direction)Battery voltage
B Position (full counterclockwise stop
position)0V
Reverse sweep (clockwise direction) 0V
67 B Ground ON — 0V
70 W/B Battery power OFF — Battery voltage Te r m i -
nal No.Wire
colorSignal nameMeasuring condition
Reference Value (V)
(Approx.) Ignition
switchOperation or condition
Unit Power source Fuse and fusible link No.
Front and rear washer motor Ignition ON or START 9
BCMIgnition ON or START 59
Batteryf

WW-42
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector terminals and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fusible link.
3. GROUND CIRCUIT INSPECTION (BCM)
Check for continuity between the BCM terminal and ground.
OK or NG
OK >> Inspection End.
NG >> Repair/replace BCM ground circuit.
BCM
(–)Ignition switch position
(+)
OFF ON
ConnectorTe r m i n a l
(Wire color)
M18 38 (W/L)
Ground0V Battery voltage
M20 70 (W/B) Battery voltage Battery voltage
WKIA2089E
BCM
Ignition switch
conditionContinuity
ConnectorTe r m i n a l
(wire color)
M20 67 (B) Ground OFF Yes
WKIA2090E

REAR WIPER AND WASHER SYSTEM
WW-43
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
CONSULT-II Function (BCM)EKS007FU
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn the
ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on the “SELECT SYSTEM” screen.
If "BCM" is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E
BCIA0030E

WW-46
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
4. CHECK REAR WIPER MOTOR AUTO STOP CIRCUITS
1. Disconnect BCM connector M18.
2. Check continuity between BCM harness connector terminals
and rear wiper motor harness connector terminals.
OK or NO
OK >> GO TO 5.
NO >> Repair harness or connector.
5. CHECK REAR WIPER MOTOR AUTO STOP SWITCH GROUNDS
Check continuity between rear wiper motor harness connector D704
terminals and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK REAR WIPER OPERATING
1. Connect BCM connectors and rear wiper motor connector.
2. Turn ignition switch ON.
3. Select “RR WIPER” during "ACTIVE TEST". Refer to WW-44,
"ACTIVE TEST" . When rear wiper is operating, check voltage
between BCM connector terminals.
OK or NG
OK >> Replace rear wiper motor. Refer to WW-51, "Removal and Installation of Rear Wiper Motor" .
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installation of BCM" .
BCM Rear wiper motor
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
M18 26 (Y/L)
D7041 (Y/L)
Ye s
M19 44 (O) 2 (O)
WKIA2093E
Rear wiper motor
Continuity
ConnectorTe r m i n a l
(wire color)
D7043 (B)
Ground Yes
5 (B)
WKIA2094E
BCM
(–) ConditionVoltage
(Approx.) (+)
ConnectorTerminal
(wire color)
M1954 (Y)
GroundOperating Fluctuating
55 (SB)End of travel
(stopped)0V
WKIA2095E

REAR WIPER AND WASHER SYSTEM
WW-47
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
7. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “WIPER” data monitor, make
sure “RR WIPER INT”, “RR WIPER ON” turn ON-OFF according to
operation of wiper switch.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Check the wiper switch. Refer to BCS-3, "
COMBINA-
TION SWITCH READING FUNCTION" .
Rear Wiper Stop Position Is IncorrectEKS007FW
1. CHECK AUTO STOP SWITCH INPUT SIGNALS
Select “BCM” on CONSULT-II. With “WIPER” data monitor, make
sure “RR WIPER STOP” and "RR AUTO STOP 2" turn ON-OFF
according to wiper operation.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installation of BCM" .
NG >> GO TO 2.
2. CHECK AUTO STOP CIRCUITS FOR SHORT TO GROUND
1. Turn ignition switch to OFF.
2. Disconnect BCM and rear wiper motor connectors.
3. Check continuity between BCM harness connector terminals
and ground.
OK or NO
OK >> GO TO 3.
NO >> Repair harness or connector.When wiper switch is in
INT position: RR WIPER INT ON
When wiper switch is in
ON position: RR WIPER ON ON
SKIA4243E
When wiper switch is OFF
and arm on stop: RR WIPER STOP ON
: RR AUTO STOP 2 ON
When wiper switch is ON
and arm in position A: RR WIPER STOP OFF
: RR AUTO STOP 2 ON
When wiper switch is ON
counterclockwise sweep: RR WIPER STOP OFF
: RR AUTO STOP 2 OFF
When wiper switch is ON
and arm in position B: RR WIPER STOP ON
: RR AUTO STOP 2 OFF
When wiper switch is ON
clockwise sweep: RR WIPER STOP OFF
: RR AUTO STOP 2 OFF
When wiper switch is ON
and arm in position A: RR WIPER STOP ON
: RR AUTO STOP 2 OFF
WKIA1418E
BCM
Continuity
ConnectorTe r m i n a l
(wire color)
M18 26 (Y/L)
Ground No
M19 44 (O)
WKIA2096E

WW-48
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
3. CHECK REAR WIPER MOTOR AUTO STOP SWITCH GROUNDS
Check continuity between rear wiper motor harness connector D704
terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK REAR WIPER OPERATING
1. Connect BCM connectors and rear wiper motor connector.
2. Turn ignition switch ON.
3. Turn rear wiper switch ON, then to OFF when wiper arm
reaches mid sweep.
4. Check voltage between rear wiper motor connector D704 termi-
nal 6 (Y) and ground.
OK or NG
OK >> Replace rear wiper motor. Refer to WW-51, "Removal
and Installation of Rear Wiper Motor" .
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installation of BCM" .
Only Rear Wiper Does Not OperateEKS007FX
1. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “WIPER” data monitor, make
sure “RR WIPER ON” turns ON-OFF according to operation of wiper
switch.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Check the wiper switch. Refer to BCS-3, "
COMBINA-
TION SWITCH READING FUNCTION" .
Rear wiper motor
Continuity
ConnectorTe r m i n a l
(wire color)
D7041 (Y/L)
GroundNo
2 (O)
3 (B)
Ye s
5 (B)
WKIA2097E
Battery voltage should exist on the reverse wipe
until arm is seated in the stop.
WKIA2098E
When rear wiper switch is in
ON position: RR WIPER ON ON
SKIA4248E

REAR WIPER AND WASHER SYSTEM
WW-49
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
Only Rear Wiper Intermittent Does Not OperateEKS007FY
1. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “WIPER” data monitor, make
sure “RR WIPER INT” turns ON-OFF according to operation of wiper
switch.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Check the wiper switch. Refer to BCS-3, "
COMBINA-
TION SWITCH READING FUNCTION" .
Wiper Does Not Wipe When Rear Washer OperatesEKS007FZ
1. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “WIPER” data monitor, make
sure “RR WASHER SW” turns ON-OFF according to operation of
rear washer switch.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Check the wiper switch. Refer to BCS-3, "
COMBINA-
TION SWITCH READING FUNCTION" . When rear wiper switch is in
INT position: RR WIPER INT ON
SKIA4249E
When rear wiper switch is in
WASHER position: RR WASHER SW ON
SKIA4250E

WW-50
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
Removal and Installation of Rear Wiper Arm, Adjustment of Rear Wiper Arm
Stop Location
EKS007G0
REMOVAL
1. Operate the rear wiper motor and stop it at the auto stop position.
2. Remove rear wiper arm cover by gripping bottom edge and
rotating cover up. Remove mounting nut, and remove the wiper
arm.
INSTALLATION
1. Prior to wiper arm installation, turn on wiper switch to operate wiper motor and then turn it “OFF” (Auto
Stop).
2. Clean up the pivot area as illustrated. This will reduce the possi-
bility of wiper arm looseness.
3. Install rear wiper arm so that the arm rests in the stopper, then
tighten wiper arm nut to specification.
LKIA0608E
Rear wiper arm nut : 11.2 N·m
(1.1 kg-m, 8 ft-lb)
SEL024J

REAR WIPER AND WASHER SYSTEM
WW-51
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
Removal and Installation of Rear Wiper Motor EKS007G1
REMOVAL
1. Remove rear wiper arm. Refer to WW-50, "Removal and Instal-
lation of Rear Wiper Arm, Adjustment of Rear Wiper Arm Stop
Location" .
2. Remove pivot cap.
3. Remove back door finisher lower. Refer to EI-41, "
BACK DOOR
TRIM" .
4. Remove the hatch glass latch. Refer to BL-136, "
BACK DOOR
LOCK" .
5. Disconnect rear wiper motor connector.
6. Remove rear wiper motor mounting bolts, and remove rear
wiper motor.
INSTALLATION
CAUTION:

Do not drop the wiper motor or cause it to contact other parts.
WKIA3425E
1. Wiper arm cover 2. Wiper arm and blade 3. Pivot cap
4. Rear wiper motor 5. Wiper arm stop 6. Rear wiper arm mounting nut
LKIA0416E

WW-52
REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
1. Clean up the pivot area as illustrated. This will reduce possibility
of wiper arm looseness.
2. Install rear wiper motor to the vehicle.
3. Connect rear wiper motor connector.
4. Install hatch glass latch and adjust as necessary. Refer to BL-
136, "BACK DOOR LOCK" .
5. Install back door finisher lower. Refer to EI-41, "
BACK DOOR
TRIM" .
6. Attach pivot cap.
7. Attach wiper arm. Refer to WW-50, "
Removal and Installation of
Rear Wiper Arm, Adjustment of Rear Wiper Arm Stop Location"
.
Rear Washer Nozzle AdjustmentEKS007G2

This vehicle is equipped with a non-adjustable rear washer nozzle.

If not satisfied with washer fluid spray coverage, confirm that the washer nozzle is installed correctly.

If the washer nozzle is installed correctly, and the washer fluid spray coverage is not satisfactory, replace
the washer nozzle.
Rear Washer Tube LayoutEKS007G3
Removal and Installation of Rear Washer NozzleEKS007G4
REMOVAL
1. Remove the rear spoiler. Refer to EI-26, "REAR SPOILER" .
2. Remove rear washer tube from nozzle.
3. Release retaining clips, and remove washer nozzle.
INSTALLATION
Installation is in the reverse order of removal.
SEL024J
WKIA1925E
LKIA0418E