Combination INFINITI QX56 2004 Factory Service Manual

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REAR WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
33 R/Y Combination switch output 4 ON
Light switch and wiper switch OFF

Wiper dial position 4
34 L Combination switch output 3 ON

Light switch and wiper switch OFF

Wiper dial position 4
35 O/B Combination switch output 2 ON

Light switch and wiper switch OFF

Wiper dial position 4
36 R/W Combination switch output 1 ON
38 W/L Ignition switch (ON) ON — Battery voltage
42 GRGlass hatch ajar switch
signalONHatch glass closed Battery voltage
Hatch glass open 0V
44 ORear wiper auto stop
switch 1ONRise up position (rear wiper arm on
stopper)0V
A Position (full clockwise stop
position)Battery voltage
Forward sweep (counterclockwise
direction)Fluctuating
B Position (full counterclockwise stop
position)0V
Reverse sweep (clockwise direction) Fluctuating
54 Y Rear wiper output circuit 2 ONRise up position (rear wiper arm on
stopper)0V
A Position (full clockwise stop
position)0V
Forward sweep (counterclockwise
direction)0V
B Position (full counterclockwise stop
position)Battery voltage
Reverse sweep (clockwise direction) Battery voltage Te r m i -
nal No.Wire
colorSignal nameMeasuring condition
Reference Value (V)
(Approx.) Ignition
switchOperation or condition
SKIA5292E
SKIA5291E
SKIA5292E

REAR WIPER AND WASHER SYSTEM
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MA
B
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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

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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
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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