ignition INFINITI QX4 2005 Factory Service Manual

FRONT WIPER AND WASHER SYSTEM
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Revision: October 20052005 QX56
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)EKS00BE2
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.
FR WIPER LOW "ON/OFF"Displays "Front Wiper LOW (ON)/Other (OFF)" status as judged from wiper switch sig-
nal.
FR WIPER INT "ON/OFF"Displays "Front Wiper INT (ON)/Other (OFF)" status as judged from wiper switch sig-
nal.
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.Monitor item name
"OPERATION OR UNIT"Contents
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

FRONT WIPER AND WASHER SYSTEM
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Revision: October 20052005 QX56
All Signals, Main Signals, Selection From Menu
NOTE:
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the dis-
play may not be correct.
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
Trouble DiagnosisEKS00BE3
FRONT WIPER DOES NOT OPERATE
CAUTION:
During IPDM E/R fail-safe control, front wipers may not operate. Refer to PG-17, "
CAN COMMUNICA-
TION LINE CONTROL" to make sure that it is not in fail-safe status.
Inspection Procedure
1. CHECK IPDM E/R TO FRONT WIPERS (1)
With CONSULT-II
1. Select "IPDM E/R" with CONSULT-II, and select "ACTIVE
TEST" on "SELECT DIAG MODE" screen.
2. Select "FRONT WIPER" on "SELECT TEST ITEM" screen.
Without CONSULT-II
1. Turn on front wipers using auto active test. Refer to PG-22,
"Auto Active Test" .
2. Confirm front wiper operation.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
Item nameCONSULT-II
screen displayDisplay or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
Front wiper
requestFR WIP REQ STOP/1LO/LO/HI x x x Signal status input from BCM.
Wiper auto stop WIP AUTO STOP ACT P/STOP P x x x Output status of IPDM E/R.
Wiper protection WIP PROT OFF/LS/HS/BLOCK x x x Control status of IPDM E/R.
Te s t i t e mCONSULT-II
screen displayDescription
Front wiper (HI, LO) output FRONT WIPER With a certain operation (OFF, HI, LO) front wiper relays can be operated.
SKIA3486E

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FRONT WIPER AND WASHER SYSTEM
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2. IPDM E/R TO FRONT WIPERS (2) INSPECTION
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connectors and front wiper motor connector.
3. Check continuity between IPDM E/R harness connector termi-
nals and front wiper motor harness connector terminals.
4. Check continuity between IPDM E/R harness connector termi-
nals and ground.
5. Check continuity between IPDM E/R harness connector terminal
and ground.
6. Check continuity between front wiper motor harness connector
terminal 1 and ground.
OK or NG
OK >> Connect connectors. GO TO 3.
NG >> Check for open circuit in harness between front wiper
motor and ground.
Terminals
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E12132 (L)
E233 (L)
Ye s 35 (L/B) 2 (L/B)
E122 43 (L/Y) 6 (L/Y)
WKIA2082E
Te r m i n a l s
Continuity
ConnectorTerminal
(wire color)
E12132 (L)
Ground No 35 (L/B)
E122 43 (L/Y)
WKIA2099E
Te r m i n a l s
Continuity
ConnectorTe r m i n a l
(wire color)
E122 38 (B)
Ground Yes
E124 59 (B)
WKIA2100E
Te r m i n a l s
Continuity
ConnectorTe r m i n a l
(wire color)
E23 1 (B) Ground Yes
WKIA2083E

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FRONT WIPER AND WASHER SYSTEM
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FRONT WIPER STOP POSITION IS INCORRECT
Inspection Procedure
1. IPDM E/R TO FRONT WIPER MOTOR (1) INSPECTION
With CONSULT-II
Select "IPDM E/R" with CONSULT-II. With data monitor, confirm that
"WIP AUTO STOP" changes from "ACT P" to "STOP P" according to
wiper operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and
Installation of IPDM E/R" .
NG >> GO TO 2.
2. IPDM E/R TO FRONT WIPER MOTOR (2) 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 and
front wiper motor harness connector.
4. Check continuity between IPDM E/R harness connector terminal
and ground.
5. Check continuity between front wiper motor harness connector
terminal 1 and ground.
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.

Check for open circuit in harness between front wiper
motor and ground.
SKIA5301E
Terminals
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E122 43 (L/Y) E23 6 (L/Y) Yes
WKIA2084E
Te r m i n a l s
Continuity
Connector Terminal (wire color)
E122 43 (L/Y) Ground No
WKIA2088E
Te r m i n a l s
Continuity
Connector Terminal (wire color)
E23 1 (B) Ground Yes
WKIA2083E

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FRONT WIPER AND WASHER SYSTEM
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2. IPDM E/R TO FRONT WIPERS (2) 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. Select "LO" on "ACTIVE TEST" screen.
3. 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-22, "
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-31, "Removal and Installation of Wiper Motor and Linkage"
.
NG >> Replace IPDM E/R. Refer to PG-28, "
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-20, "Removal and Installa-
tion of BCM" .
NG >> Replace wiper switch. Refer to WW-33, "
Removal and
Installation of Wiper and Washer Switch" .
Terminals
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
Te r m i n a l s
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

FRONT WIPER AND WASHER SYSTEM
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ONLY FRONT WIPER HI DOES NOT OPERATE
Inspection Procedure
1. IPDM E/R TO FRONT WIPERS (1) INSPECTION
With CONSULT-II
1. Select "IPDM E/R" with CONSULT-II, and select "ACTIVE
TEST" on "SELECT DIAG MODE" screen.
2. Select "FRONT WIPER" on "SELECT TEST ITEM" screen.
3. Select "HI" on "ACTIVE TEST" screen.
4. Confirm front wiper high operation.
Without CONSULT-II
1. Turn on front wipers using auto active test. Refer to PG-22,
"Auto Active Test" .
2. Confirm front wiper operation.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. IPDM E/R TO FRONT WIPERS (2) 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.
SKIA3486E
Te r m i n a l s
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E121 35 (L/B) E23 2 (L/B) Yes
WKIA2087E

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2. IPDM E/R TO FRONT WIPER MOTOR (2) 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 (3) INSPECTION
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-28, "Removal and Installation of IPDM E/R" .
NG >> Replace front wiper motor. Refer to WW-31, "
Removal and Installation of Wiper Motor and Link-
age" .
Terminals
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E122 43 (L/Y) E23 6 (L/Y) Yes
WKIA2084E
Te r m i n a l s
Continuity
Connector Terminal (wire color)
E122 43 (L/Y) Ground No
WKIA2088E
Te r m i n a l s
Voltag e
(Approx.) (+)
(–) Condition
ConnectorTe r m i n a l
(wire color)
E122 43 (L/Y) GroundWiper operatingBattery
voltage
Wiper stopped 0
WKIA2085E

REAR WIPER AND WASHER SYSTEM
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REAR WIPER AND WASHER SYSTEMPFP:28710
Components Parts and Harness Connector LocationEKS00BEB
System DescriptionEKS00BEC

The wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input ter-
minals. Terminal combination status is read by the BCM (body control module) when switch is turned ON.

The BCM controls rear wiper ON and INT (intermittent) operation.
Power is supplied at all times

through 50A fusible link (letter f , located in fusible link box)

to BCM terminal 70.
With the ignition switch in ON or START position, power is supplied

through 10A fuse [No. 9, located in fuse block (J/B)]

to combination switch terminal 14, and

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38.
Ground is supplied

to BCM terminal 67 and

to combination switch terminal 12

through grounds M57, M61 and M79.
WKIA3462E

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REAR WIPER OPERATION
When the ignition switch is in the ON or START position, and the rear wiper switch is in the ON position, the
BCM detects a rear wiper ON request through the combination switch (wiper switch) reading function.
The BCM will first check the status of the glass hatch ajar switch before supplying power to the rear wiper
motor. If the glass hatch ajar switch is closed (ground) the BCM will not turn on the rear wiper motor. If the
glass hatch ajar switch is open (not grounded) the BCM will control the rear wiper motor as follows.
The BCM controls rear wiper motor operation by switching direction of current flow between the two rear wiper
motor output circuits.
Power is supplied to output circuit 1 for forward operation (counterclockwise sweep),

through BCM terminal 55

to rear wiper motor terminal 4.
Ground is supplied

to rear wiper motor terminal 6

through BCM terminal 54

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 1 power and ground supplied, the rear wiper motor operates in a counterclockwise sweep
direction until auto stop switch 1 closes (full sweep position). Auto stop switch 1 supplies ground

to BCM terminal 44

through rear wiper motor terminal 2

through rear wiper motor terminal 5

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 1 and turns on output circuit 2.
Power is supplied to output circuit 2 for reverse operation (clockwise sweep),

through BCM terminal 54

to rear wiper motor terminal 6.
Ground is supplied

to rear wiper motor terminal 4

through BCM terminal 55

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 2 power and ground supplied the rear wiper motor operates in a clockwise sweep direction
until auto stop switch 2 closes (full sweep position). Auto stop switch 2 supplies ground

to BCM terminal 26

through rear wiper motor terminal 1

through rear wiper motor terminal 3

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 2 and turns on output circuit 1. This pro-
cess repeats until the rear wiper switch or ignition switch is turned off.
If the ignition switch is turned to OFF during operation, the rear wiper motor will immediately stop. If the igni-
tion switch is turned ON after this condition, and the BCM does not receive a rear wiper switch ON or INT sig-
nal, the BCM will operate the rear wiper to the auto stop position.
If the BCM does not receive a change in status in either auto stop switch 1 or auto stop switch 2 within a 5 sec-
ond period of output circuit 1 or output circuit 2 operation, the BCM will turn off output circuit 1 and output cir-
cuit 2.
If the BCM detects the rear door glass ajar signal during rear wiper motor operation, the BCM will operate the
rear wiper motor to the auto stop position. Once the rear door glass ajar signal returns to open (not grounded)
for 5 or more seconds, the BCM will resume rear wiper motor operation.
INTERMITTENT OPERATION
The rear wiper motor operates the wiper arm at low speed approximately every 7 seconds.
When the wiper switch is in the rear wiper INT position, the BCM detects a rear wiper INT request through the
combination switch (wiper switch) reading function.

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The BCM controls rear wiper motor operation by switching direction of current flow between the two rear wiper
motor output circuits.
Power is supplied to output circuit 1 for forward operation (counterclockwise sweep),

through BCM terminal 55

to rear wiper motor terminal 4.
Ground is supplied

to rear wiper motor terminal 6

through BCM terminal 54

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 1 power and ground supplied, the rear wiper motor operates in a counterclockwise sweep
direction until auto stop switch 1 closes (full sweep position). Auto stop switch 1 supplies ground

to BCM terminal 44

through rear wiper motor terminal 2

through rear wiper motor terminal 5

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 1 and turns on output circuit 2.
Power is supplied to output circuit 2 for reverse operation (clockwise sweep),

through BCM terminal 54

to rear wiper motor terminal 6.
Ground is supplied

to rear wiper motor terminal 4

through BCM terminal 55

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 2 power and ground supplied the rear wiper motor operates in a clockwise sweep direction
until auto stop switch 2 closes (full sweep position). Auto stop switch 2 supplies ground

to BCM terminal 26

through rear wiper motor terminal 1

through rear wiper motor terminal 3

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 2 and starts the timing function of 7 sec-
onds. After approximately 7 seconds the BCM turns on output circuit 1. This process repeats until the rear
wiper switch or ignition switch is turned off.
AUTO STOP OPERATION
When the rear wiper switch is turned off, the BCM will continue the cycle of output circuit 1 or output circuit 2
until auto stop switch 1 and auto stop switch 2 are both in the closed position. When the BCM receives ground
signals from auto stop switch 1 and auto stop switch 2 simultaneously, output circuit 1 and output circuit 2 are
both turned off.
REAR WASHER OPERATION
When the ignition switch is in the ON or START position, and the front and rear washer switches are OFF, the
front and rear washer motor is supplied power

through 10A fuse (No. 9, located in the fuse block J/B)

through combination switch (wiper switch) terminal 14

through combination switch (wiper switch) terminal 11

to front and rear washer motor terminal 2, and

through combination switch (wiper switch) terminal 13

to front and rear washer motor terminal 1.
When the rear wiper switch is in rear washer position, the BCM detects a rear washer signal by BCM wiper
switch reading function. Combination switch ground is supplied

to front and rear washer motor terminal 1