2006 INFINITI QX56 air condition

FRONT WIPER AND WASHER SYSTEMWW-27
C
DE
F
G H
I
J
L
M A
B
WW
Revision: November 2009 2006 QX56
2. IPDM E/R TO FRONT WIPER MOTOR AUTO STOP 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.
4. Check continuity between IPDM E/R harness connector terminal and ground.
OK or NG
OK >> Connect connectors. GO TO 3.
NG >> Repair harness or connector.
3. IPDM E/R TO FRONT WIPER MOTOR AUTO STOP CIRCUIT VOLTAGE
1. Turn ignition switch ON.
2. While front wiper motor is stopped and while operating, measure voltage between IPDM E/R terminal 43 and ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
NG >> Replace front wiper motor. Refer to WW-29, "
Wiper Motor and Linkage" .
Terminals
Continuity
Connector Terminal Connector Terminal
E122 43 E236Yes
WKIA2084E
Terminals
Continuity
Connector Terminal
E122 43Ground No
WKIA2088E
IPDM E/R
(– ) Condition Voltage
(Approx.)
(+)
Connector Terminal
E122 43 Ground Wiper operating
Battery
voltage
Wiper stopped 0V
WKIA2085E

WW-40
REAR WIPER AND WASHER SYSTEM
Revision: November 20092006 QX56
How to Proceed With Trouble DiagnosisEKS00BEF
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-32, "
System Description" .
3. Perform the Preliminary Check. Refer to WW-40, "
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 InspectionEKS00BEG
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 is blown, be sure to eliminate cause of problem before installing new fuse. 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
color Signal name Measuring condition
Reference Value (V)
(Approx.)
Ignition
switch Operation or condition
Unit
Power source Fuse No.
Front and rear washer motor Ignition ON or START 9
BCM Ignition ON or START
59
Battery f

REAR WIPER AND WASHER SYSTEMWW-41
C
DE
F
G H
I
J
L
M A
B
WW
Revision: November 2009 2006 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 or short between BCM and fuse.
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.
Terminals Ignition switch position
(+) (– )O FF O N
Connector Terminal
M18 38 Ground0V
Battery voltage
M20 70 Battery voltage Battery voltage
WKIA2089E
Terminals
Ignition switch
condition Continuity
Connector Terminal
M20 67 Ground OFF Yes
WKIA2090E

REAR WIPER AND WASHER SYSTEMWW-45
C
DE
F
G H
I
J
L
M A
B
WW
Revision: November 2009 2006 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-43,
"ACTIVE TEST" . When rear wiper is operating, check voltage
between BCM connector terminals and ground.
OK or NG
OK >> Replace rear wiper motor. Refer to WW-50, "Rear Wiper Motor" .
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
BCMRear wiper motor
Continuity
Connector Terminal Connector Terminal
M18 26
D704 1
Ye s
M19 44 2
WKIA1415E
Rear wiper motor
Continuity
Connector Terminal
D704 3
Ground Yes
5
WKIA1416E
BCM
(– ) Condition Voltage
(Approx.)
(+)
Connector Terminal
M19 54
Ground Operating Fluctuating
55 End of travel
(stopped) 0V
WKIA1417E