INFINITI QX56 2004 Factory Service Manual

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FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
SchematicEKS007F8
WKWA2262E

FRONT WIPER AND WASHER SYSTEM
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Wiring Diagram — WIPER —EKS007F9
WKWA3099E

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FRONT WIPER AND WASHER SYSTEM
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WKWA1388E

FRONT WIPER AND WASHER SYSTEM
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WKWA3100E

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Terminals and Reference Values for BCMEKS007FA
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference Value (V)
(Approx.) Igni-
tion
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
32 R/G Combination switch output 5 ON

Light switch and wiper switch OFF

Wiper dial position 4
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
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E

FRONT WIPER AND WASHER SYSTEM
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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
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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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CONSULT-II Function (BCM)EKS007FE
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

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4. Select the desired part to be diagnosed on the “SELECT TEST
ITEM” screen.
DATA MONITOR
Operation Procedure
1. Touch “WIPER” on the “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on the “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on the “SELECT MONITOR ITEM” screen.
4. Touch “START”.
5. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is
selected, all the items will be monitored.
6. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop recording,
touch "STOP”.
Display Item List
LKIA0183E
ALL SIGNALS Monitors all the items.
SELECTION FROM MENU Selects and monitors the individual item selected.
Monitor item name
“OPERATION OR UNIT”Contents
IGN ON SW “ON/OFF” Displays “IGN Position (ON)/OFF, ACC Position (OFF)” status as judged from ignition switch signal.
IGN SW CAN “ON/OFF”Displays “IGN switch ON (ON)/Other OFF or ACC (OFF)" status as judged from CAN communica-
tions.
FR WIPER HI “ON/OFF” Displays “Front Wiper HI (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER LOW “ON/OFF” Displays “Front Wiper LOW (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER INT “ON/OFF” Displays “Front Wiper INT (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WASHER SW “ON/OFF” Displays “Front Washer Switch (ON)/Other (OFF)” status as judged from wiper switch signal.
INT VOLUME (1 - 7) Displays intermittent operation dial position setting (1 - 7) as judged from wiper switch signal.
FR WIPER STOP “ON/OFF” Displays “Stopped (ON)/Operating (OFF)” status as judged from the auto-stop signal.
VEHICLE SPEED “0.0 km/h” Displays vehicle speed as received from CAN communication.

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ACTIVE TEST
Operation Procedure
1. Touch “WIPER” on the “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on the “SELECT DIAG MODE” screen.
3. Touch item(s) to be tested and check operation of the selected item(s).
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
CONSULT-II Function (IPDM E/R)EKS007FF
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)".
Te s t i t e mDisplay on CONSULT-II
screenDescription
Front wiper HI output FR WIPER (HI) Front wiper HI can be operated by any ON-OFF operation.
Front wiper LO output FR WIPER (LO) Front wiper LO can be operated by any ON-OFF operation.
Front wiper INT output FR WIPER (INT) Front wiper INT can be operated by any ON-OFF operation.
IPDM E/R diagnostic Mode Description
SELF-DIAG RESULTS Displays IPDM E/R self-diagnosis results.
DATA MONITOR Displays IPDM E/R input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BBIA0369E
BCIA0029E