ignition INFINITI FX35 2007 Service Manual

TROUBLE DIAGNOSES WT-31
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Revision: 2006 July 2007 FX35/FX45
Preliminary CheckNES000GZ
BASIC INSPECTION
1. CHECK ALL TIRE PRESSURES

Check all tire pressures. Refer to WT-41, "Tire" .
OK or NG
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. CHECK LOW TIRE PRESSURE WARNING LAMP ACTIVATION
1. Check low tire pressure warning lamp activation.
2. Does low tire pressure warning lamp activate for 1 second when ignition switch is turned “ON”?
Does warning lamp activate?
YES >> GO TO 3.
NO >> Check fuse and combination meter.
3. CHECK CONNECTOR
1. Disconnect BCM harness connectors M3 and M4.
2. Check terminals for damage or loose connection.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TRANSMITTER TOOL

Check activation tool battery.
OK or NG
OK >> Perform self-diagnosis.
NG >> Replace activation tool battery.

WT-32
TROUBLE DIAGNOSES
Revision: 2006 July 2007 FX35/FX45
Malfunction Code/Symptom ChartNES000H0
Code/Symptom Malfunction part Reference
page
06
07
08
09 Front-left tire pressure drops to 86 kPa (0.88 kg/cm
2 , 12.5 psi) or less.
Front-right tire pressure drops to 86 kPa (0.88 kg/cm2 , 12.5 psi) or less.
Rear-right tire pressure drops to 86 kPa (0.88 kg/cm2 , 12.5 psi) or less.
Rear-left tire pressure drops to 86 kPa (0.88 kg/cm2 , 12.5 psi) or less. —
15
16
17
18 Front-left tire pressure drops to 173 kPa (1.8 kg/cm
2 , 25 psi) or less.
Front-right tire pressure drops to 173 kPa (1.8 kg/cm2 , 25 psi) or less.
Rear-right tire pressure drops to 173 kPa (1.8 kg/cm2 , 25 psi) or less.
Rear-left tire pressure drops to 173 kPa (1.8 kg/cm2 , 25 psi) or less. —
21
22
23
24 Transmitter no data (front - left)
Transmitter no data (front - right)
Transmitter no data (rear - right)
Transmitter no data (rear - left) WT-33
31
32
33
34 Transmitter checksum error (front - left)
Transmitter checksum error (front - right)
Transmitter checksum error (rear - right)
Transmitter checksum error (rear - left) WT-33
35
36
37
38 Transmitter pressure data error (front - left)
Transmitter pressure data error (front - right)
Transmitter pressure data error (rear - right)
Transmitter pressure data error (rear - left) WT-34
41
42
43
44 Transmitter function code error (front - left)
Transmitter function code error (front - right)
Transmitter function code error (rear - right)
Transmitter function code error (rear - left) WT-33
45
46
47
48 Transmitter battery voltage low (front - left)
Transmitter battery voltage low (front - right)
Transmitter battery voltage low (rear - right)
Transmitter battery voltage low (rear - left) WT-33
52 Vehicle speed signal
WT-35
Low tire pressure warning lamp does not
come on when ignition switch is turned
on. Fuse or combination meter
BCM connector or circuit
BCM WT-36
Low tire pressure warning lamp stays on
when ignition switch is turned on. Combination meter
BCM connector or circuit
BCM WT-36
Low tire pressure warning lamp blinks
when ignition switch is turned on. BCM connector or circuit
BCM
Transmitter's mode off
ID registration not yet WT-37
Run-flat tire warning lamp stays on when
ignition switch is turned on. Combination meter
Tire pressure DI-5
Turn signal lamp blinks when ignition
switch is turned on. BCM connector or circuit
BCM WT-38
ID registration can not be operated. Transmitter
Remote keyless entry receiver connector or circuit
Remote keyless entry receiver
BCM connector or circuit
BCM WT-38

WT-36
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Low Tire Pressure Warning Lamp Does Not Come On When Ignition Switch Is
Tu r n e d O n
NES000H5
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
1. Perform “CONSULT-II Start Procedure”. Refer to GI-38, "
CONSULT-II Start Procedure" .
2. Select “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
3. Check display contents in self-diagnostic results.
Is
“CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-49, "CAN System Specification Chart" .
NO >> No malfunction. GO TO 2.
2. CHECK COMBINATION METER

Check combination meter function.
OK or NG
OK >> GO TO 3.
NG >> Check combination meter. Refer to DI-5, "
System Description" .
3. CHECK LOW TIRE PRESSURE WARNING LAMP

Disconnect BCM harness connectors M3 and M4.
Does the warning lamp activate?
YES >> Replace BCM. Refer to BCS-14, "Removal and Installation of BCM" .
NO >> Check combination meter and repair or replace.
Low Tire Pressure Warning Lamp Stays On When Ignition Switch Is Turned OnNES000H6
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Disconnect BCM harness connectors M3 and M4.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK POWER SUPPLY CIRCUIT (BATTERY)
Make sure voltage between BCM harness connector M4 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check BCM power supply circuit for open or short.
Te r m i n a l Voltage
(+) (–)
42, 55 Ground 12V
SEIA0435E

TROUBLE DIAGNOSIS FOR SYMPTOMS WT-37
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Revision: 2006 July 2007 FX35/FX45
3. CHECK POWER SUPPLY CIRCUIT (IGN)
1. Turn ignition switch ON.
2. Make sure voltage between BCM harness connector M3 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check BCM power supply circuit for open or short.
4. CHECK GROUND CIRCUIT

Check continuity between BCM harness connector M4 and
ground.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NG >> Repair or replace BCM ground circuit.
Low Tire Pressure Warning Lamp Blinks When Ignition Switch Is Turned OnNES000H7
NOTE:
If warning lamp blink below, the system is normal.
Blink Mode A

This mode shows transmitter status is OFF-mode.
Perform transmitter wake up operation. Refer to WT-22, "
Trans-
mitter Wake Up Operation" .
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Disconnect BCM harness connector M3.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
Terminal Voltage
(+) (–)
38 Ground 12V
SEIA0436E
Terminal Continuity
(+) (–)
49, 52 Ground Yes
SEIA0610E
SEIA0347E

WT-38
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 July 2007 FX35/FX45
2. CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

Check continuity between BCM harness connector M3 and
ground.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NG >> Repair or replace harness connector.
Run-Flat Tire Warning Lamp Stays On When Ignition Switch is Turned OnNES000L0
DIAGNOSTIC PROCEDURE
1. CHECK ALL TIRE PRESSURES

Check all tire pressures. Refer to WT-41, "Tire" .
OK or NG
OK >> Check combination meter. Refer to DI-5, "COMBINATION METERS" .
NG >> Adjust tire pressure to specified value or change the tires.
Turn Signal Lamp Blinks When Ignition Switch Is Turned OnNES000H8
DIAGNOSTIC PROCEDURE
1. CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

Check continuity between BCM harness connector M3 and
ground.
OK or NG
OK >> Check turn signal lamp operation. Refer to LT- 9 0 , "Sys-
tem Description" .
NG >> Repair or replace harness connector.
ID Registration Can Not Be CompletedNES000H9
DIAGNOSTIC PROCEDURE
1. ID REGISTRATION (ALL)

Perform ID registration of all transmitters.
Can ID registration of all transmitters be completed?
YES >> INSPECTION END
NO >> GO TO WT-33, "
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS" .
Terminal
Continuity
(+) (–)
15 Ground No
SEIA0438E
Terminal Continuity
(+) (–)
15 Ground No
SEIA0438E

WW-4
FRONT WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45
FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationNKS00326
System DescriptionNKS00327

All front wiper relays (HI, LO) are included in IPDM E/R (intelligent power distribution module engine
room).

Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input termi-
nals. Terminal combination status is read by BCM (body control module) when switch is turned ON.

BCM controls front wiper LO, HI, and INT (intermittent) operation.

IPDM E/R operates wiper motor according to CAN communication signals from BCM.
OUT LINE
Power is supplied at all times

through 50 A fusible link (letter M, located in fuse, fusible link and relay box.)

to BCM terminal 55,

through 15 A fuse [No. 22, located in fuse block (J/B)]

to BCM terminal 42,

through 30 A fuse (No. 73, located in IPDM E/R)

to front wiper relay, located in IPDM E/R,

through 15 A fuse (No. 78, located in IPDM E/R) and

through 10 A fuse (No. 71, located in IPDM E/R)

to CPU located in IPDM E/R.
When the ignition switch is ON or START position, power is supplied

to ignition relay located in IPDM E/R, from battery direct,

through 15 A fuse [No. 1, located in fuse block (J/B)]

to BCM terminal 38,

through ignition relay, located in IPDM E/R
PKIC9701E

WW-6
FRONT WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45
Wiper Dial Position Setting
Example: For wiper intermittent dial position 1
Using combination switch reading function, BCM detects ON/OFF status of INT VOLUME 1, 2, and 3.
When combination switch status is as listed below, BCM determines that it is wiper intermittent dial position 1.

INT VOLUME 1: ON (Continuity exists between combination switch output 3 and input 1.)

INT VOLUME 2: ON (Continuity exists between combination switch output 5 and input 1.)

INT VOLUME 3: ON (Continuity exists between combination switch output 4 and input 2.)
BCM determines front wiper intermittent operation delay interval from wiper intermittent dial position 1 and
vehicle speed, and sends wiper request signal (INT) to IPDM E/R.
AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base.
When wiper arms are not located at base of windshield with wiper switch OFF, ground is provided

from IPDM E/R terminal 21

to front wiper motor terminal 1, in order to continue wiper motor operation at low speed.
When wiper arms reach base of windshield, front wiper motor terminals 5 and 2 are connected,
and Ground is supplied

to IPDM E/R terminal 32

through front wiper motor terminals 5 and 2

through grounds E21, E50 and E51.
Then the IPDM E/R sends auto stop operation signal to BCM through CAN communication.
When the BCM receives auto-stop operation signal, BCM sends wiper stop signal to IPDM E/R through CAN
communication.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WASHER OPERATION
When wiper switch is in front wiper washer position with ignition switch on, BCM detects front wiper switch is
on the washer position by BCM wiper switch reading function (Refer to WW-8, "
COMBINATION SWITCH
READING FUNCTION" ), combination switch (wiper switch) ground is supplied

to combination switch terminal 13

through front and rear washer pump terminal 1

to front and rear washer pump terminal 2

through combination switch terminal 11

to combination switch terminal 12

through grounds M35, M45 and M85.
With ground supplied, front and rear washer pump is operated.
When BCM detects that front and rear washer pump has operated for 0.4 seconds or linger, BCM operates
front wiper motor for low speed.
When BCM detects washer switch is OFF, low speed operation cycles approximately 2 times and stops.
MIST OPERATION
When wiper switch is turned to MIST position, wiper low speed operation cycles once and then stops.
For additional information about wiper operation under this condition, Refer to WW-5, "
LOW SPEED WIPER
OPERATION" .
Wiper intermittent dial position Intermittent operation
interval Combination switch
INT VOLUME 1 INT VOLUME 2 INT VOLUME 3
1 Short
↑
↓
Long ON ON ON
2ONONOFF
3ONOFFOFF
4 OFF OFF OFF
5OFFOFFON
6 OFF ON ON
7 OFF ON OFF

FRONT WIPER AND WASHER SYSTEM WW-7
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Revision: 2006 July 2007 FX35/FX45
If switch is held in MIST position, low speed operation continues.
FAIL-SAFE FUNCTION
If an abnormality occurs in CAN communications, IPDM E/R holds the condition just before fail-safe status is
initiated until ignition switch is turned OFF. (If wipers were operating in LO just before the initiation of fail-safe
status, they continue to operate in LO until ignition switch is turned OFF.)

FRONT WIPER AND WASHER SYSTEM WW-15
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Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Values for BCMNKS0032C
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper inter-
mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT-II. Refer to LT-
11 7, "DATA MONITOR" .
Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
4PU/W Combination
switch input 3 ON Lighting,
turn, wiper
switch
(Wiper inter-
mittent dial
position 4) OFF Approx. 0 V
Any of the conditions below

Front wiper switch MIST

Front wiper switch INT

Front wiper switch LO Approx. 1.0 V
5Y/R Combination
switch input 2 ON Lighting,
turn, wiper
switch OFF
(Wiper intermittent dial position 4) Approx. 0 V
Any of the conditions below

Front washer switch
(Wiper intermittent dial position 4)

Wiper intermittent dial position 1

Wiper intermittent dial position 5

Wiper intermittent dial position 6
Approx. 1.0 V
PKIB4959J
PKIB4959J

WW-16
FRONT WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45
6SB Combination
switch input 1 ON Lighting,
turn, wiper
switch OFF
(Wiper intermittent dial position 4) Approx. 0 V
Any of the conditions below

Front wiper switch HI
(Wiper intermittent dial position 4)

Wiper intermittent dial position 3
Approx. 1.0 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 2 Approx. 1.7 V
Any of the conditions below

Wiper intermittent dial position 6

Wiper intermittent dial position 7 Approx. 0.8 V
32 GY/R Combination
switch output 5 ON Lighting,
turn, wiper
switch OFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 2

Wiper intermittent dial position 6

Wiper intermittent dial position 7 Approx. 1.0 V
Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
PKIB4959J
PKIB4952J
PKIB4955J
PKIB4960J
PKIB4956J