2004 INFINITI QX56 battery

FRONT WIPER AND WASHER SYSTEM
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Revision: August 20072004 QX56
Terminals and Reference Values for IPDM E/R EKS007FB
Work FlowEKS007FC
1. Confirm the symptom or customer complaint.
2. Understand the system description, refer to WW-4, "
System Description" .
3. Perform preliminary inspection, refer to WW-13, "
Preliminary Inspection" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does wiper function operate normally? If it operates normally, GO TO 6. If not, GO TO 4.
6. Inspection End.
Preliminary InspectionEKS007FD
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
Inspection procedure
1. CHECK FUSE
Check if wiper or washer fuse is blown.
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
38 W/L Ignition switch (ON) ON — Battery voltage
39 W CAN-H ON — —
40 R CAN-L ON — —
67 B Ground — — 0V
70 W/B Battery power OFF — Battery voltage Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference Value (V)
(Approx.) Igni-
tion
switchOperation or condition
SKIA5292E
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
32 L Low speed signal ON Wiper switchOFF 0V
LO Battery voltage
35 L/B High speed signal ON Wiper switchOFF 0V
HI Battery voltage
43 L/Y Wiper auto stop signal ONWiper operating Battery voltage
Wiper stopped 0V
38 B Ground — — 0V
39 W CAN-H ON — —
40 R CAN-L ON — —
59 B Ground — — 0V
Unit Power source Fuse and fusible link No.
Front and rear washer motor Ignition switch ON or START 9
Front wiper relay Battery 39

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FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
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" .
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 BCM terminal and ground.
OK or NG
OK >> Inspection End.
NG >> Repair/replace BCM ground circuit.
BCMIgnition switch ON or START 59
Batteryf Unit Power source Fuse and fusible link No.
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
WKIA2089E
BCM
Ignition switch
conditionContinuity
ConnectorTe r m i n a l
(wire color)
M20 67 (B) Ground OFF Yes
WKIA2090E

FRONT WIPER AND WASHER SYSTEM
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Revision: August 20072004 QX56
3. IPDM E/R INSPECTION
With CONSULT-II
1. Turn ignition switch ON.
2. Select "HI" on "ACTIVE TEST" screen.
3. When front wiper relay and front wiper high relay are operating, check voltage between IPDM E/R termi-
nals and ground.
Without CONSULT-II
1. Turn on front wipers using the auto active test. Refer to PG-23, "
Auto Active Test" .
2. When front wiper relay and front wiper high relay are operating,
check voltage between IPDM E/R terminals and ground.
OK or NG
OK >> Replace the front wiper motor. Refer to WW-29, "Removal and Installation of Wiper Motor and
Linkage" .
NG >> Replace IPDM E/R. Refer to PG-29, "
Removal and Installation of IPDM E/R" .
4. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “FR WIPER INT”, “FR WIPER LOW” and “FR WIPER HI” turn
ON-OFF according to operation of wiper switch.
OK or NG
OK >> GO TO 5.
NG >> Check wiper switch. Refer to BCS-3, "
COMBINATION
SWITCH READING FUNCTION" .
5. BCM INSPECTION
Select "BCM" on CONSULT-II. Carry out self-diagnosis of BCM.
Displayed self-diagnosis results
NO DTC>> Replace the BCM. Refer to BCS-19, "Removal and
Installation of BCM" .
CAN COMM CIRCUIT>> Check CAN communication line of BCM.
GO TO BCS-13, "
CAN Communication Inspection Using
CONSULT-II (Self-Diagnosis)" .
IPDM E/R
(–) ConditionVo l ta g e
(Approx.) (+)
Connector Terminal (wire color)
E12132 (L)
GroundStopped 0V
LO operation Battery voltage
35 (L/B)Stopped 0V
HI operation Battery voltage
WKIA2101E
WKIA1018E
SKIA1039E

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FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
2. IPDM E/R TO FRONT WIPERS CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and front wiper motor connector.
3. Check continuity between IPDM E/R harness connector terminal
and front wiper motor harness connector terminal.
OK or NG
OK >> GO TO 3.
NG >> Check for short circuit or open circuit in harness
between IPDM E/R and front wiper motor.
3. IPDM E/R INSPECTION
With CONSULT-II
1. Connect IPDM E/R connector and front wiper motor connector.
2. Turn ignition switch ON.
3. Select "LO" on "ACTIVE TEST" screen.
4. When front wiper relay is operating, check voltage between IPDM E/R terminals.
Without CONSULT-II
1. Connect IPDM E/R connector and front wiper motor connector.
2. Turn on front wipers using the auto active test. Refer to PG-23, "
Auto Active Test" .
3. When front wiper relay is operating, check voltage between
IPDM E/R terminals.
OK or NG
OK >> Replace the wiper motor. Refer to WW-29, "Removal and Installation of Wiper Motor and Linkage"
.
NG >> Replace IPDM E/R. Refer to PG-29, "
Removal and Installation of IPDM E/R" .
4. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “FR WIPER HI” 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 >> Replace wiper switch. Refer to WW-31, "
Removal and
Installation of Wiper and Washer Switch" .
IPDM E/R Front wiper motor
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E121 32 (L) E23 3 (L) Yes
WKIA2086E
IPDM E/R
Vo ltag e
(Approx.) (–) (+)
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E122 38 (B)
E121 32 (L) Battery voltage
E124 59 (B)
WKIA3198E
WKIA1018E

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FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
3. IPDM E/R INSPECTION
With CONSULT-II
1. Connect IPDM E/R connector and front wiper motor connector.
2. Turn ignition switch ON.
3. Select "HI" on "ACTIVE TEST" screen.
4. When front wiper high relay is operating, check voltage between IPDM E/R terminals.
Without CONSULT-II
1. Connect IPDM E/R connector and front wiper motor connector.
2. Turn on front wipers using the auto active test. Refer to PG-23, "
Auto Active Test" .
3. When front wiper high relay is operating, check voltage between
IPDM E/R terminals.
OK or NG
OK >> Replace the wiper motor. Refer to WW-29, "Removal and Installation of Wiper Motor and Linkage"
.
NG >> Replace IPDM E/R. Refer to PG-29, "
Removal and Installation of IPDM E/R" .
4. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “FR WIPER HI” 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 >> Replace wiper switch. Refer to WW-31, "
Removal and
Installation of Wiper and Washer Switch" .
ONLY FRONT WIPER INT DOES NOT OPERATE
Inspection Procedure
1. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “FR 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 >> Replace wiper switch. Refer to WW-31, "
Removal and
Installation of Wiper and Washer Switch" .
IPDM E/R
Voltage
(Approx.) (–) (+)
ConnectorTerminal (wire
color)ConnectorTerminal (wire
color)
E122 38 (B)
E121 35 (L/B) Battery voltage
E124 59 (B)
WKIA3200E
WKIA1018E
WKIA1018E

REAR WIPER AND WASHER SYSTEM
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Revision: August 20072004 QX56
Terminals and Reference Values for BCMEKS007FR
Te r m i -
nal No.Wire
colorSignal nameMeasuring condition
Reference Value (V)
(Approx.) Ignition
switchOperation or condition
2 SB Combination switch input 5 ON

Light switch and wiper switch OFF

Wiper dial position 4
3 G/Y Combination switch input 4 ON

Light switch and wiper switch OFF

Wiper dial position 4
4 Y Combination switch input 3 ON

Light switch and wiper switch OFF

Wiper dial position 4
5 G/B Combination switch input 2 ON

Light switch and wiper switch OFF

Wiper dial position 4
6 V Combination switch input 1 ON
26 Y/LRear wiper auto stop
switch 2ONRise up position (rear wiper arm on
stopper)0V
A Position (full clockwise stop
position)0V
Forward sweep (counterclockwise
direction)Fluctuating
B Position (full counterclockwise stop
position)Battery voltage
Reverse sweep (clockwise direction) Fluctuating
32 R/G Combination switch output 5 ON

Light switch and wiper switch OFF

Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E

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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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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