tire pressure INFINITI M35 2007 Factory User Guide

BCS-8
BCM (BODY CONTROL MODULE)
Revision: 2007 April2007 M35/M45
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Intelligent Key system Intelligent Key unit

All door locking actuator

Trunk lid opener actuator

Turn signal lamp (LH, RH)

Combination meter
Power door lock system

Power window main switch (door lock and unlock switch)

Power window sub switch (passenger side)
(door lock and unlock switch)All-door locking actuator
Power supply (IGN) to power win-
dow, sunroofIgnition power supply Power window and sunroof system
Power supply (BAT) to power win-
dow, sunroof and power seatBattery power supplyPower window, sunroof system
and power seat
Panic alarm

Key slot

Intelligent KeyIPDM E/R
Theft warning system

All-door switch

Hood switch

Intelligent Key

Power window main switch (door lock and unlock switch)

IPDM E/R

Security indicator lamp
Auto light system

Optical sensor

Combination switchIPDM E/R
Exterior lamp battery saver control

Ignition switch

Combination switchIPDM E/R

Headlamp

Tail lampCombination switch

IPDM E/R

Combination meter
Front fog lamp Combination switch

IPDM E/R

Combination meter
Turn signal lamp Combination switch

Turn signal lamp

Combination meter
Hazard lamp Hazard switch

Turn signal lamp

Combination meter
Interior room lamp timer

Key switch

Power window main switch (door lock and unlock switch)

Front door switch driver side

All-door switchInterior room lamp
Key warning chime*
1
Key switch

Front door switch driver sideCombination meter
(warning buzzer)
Light warning chime

Combination switch

Front door switch driver sideCombination meter
(warning buzzer)
Tire pressure monitoring system Low tire pressure warning control unitCombination meter
(warning buzzer)
(warning lamp)
Seat belt warning chime

Combination meter [Seat belt buckle (driver side) switch]

Ignition switchCombination meter
(warning buzzer)
Vehicle-speed-sensing intermittent
wiper

Combination switch

Unified meter and A/C amp.IPDM E/R
Rear window defogger

Multifunction switch

NAVI control unit*2

AV control unit*3
IPDM E/R

BRC-8
[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Revision: 2007 April2007 M35/M45
TCS

Traction Control System is a function that electronically controls engine torque, brake fluid pressure and
A/T gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals
from 4 wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels
(rear wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid
pressure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine
torque by the control unit. Further more, throttle position is continuously controlled to ensure the optimum
engine torque at all times.

During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.

Electrical system diagnosis by CONSULT-II is available.
VDC

Vehicle Dynamics Control system detects driver's steering operation amount and brake pedal travel from
steering angle sensor and pressure sensor. Using information from yaw rate/side G sensor and wheel
sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle driving
stability by controlling brake application to 4 wheels and engine output.

During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.

Electrical system diagnosis by CONSULT-II is available.
ECD
Receives deceleration degree commandment value signal from ICC sensor integrated unit, and controls brake
fluid pressure with the motor [built-in ABS actuator and electric unit (control unit)].
Operation That Is Not "System Error" NFS000Q7
ABS

When starting engine or just after starting vehicle, brake pedal may vibrate or the motor operating sound
may be heard from engine room. This is a normal states of the operation check.

During ABS operation, brake pedal lightly vibrates and a mechanical sound may be heard. This is normal.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
TCS

Depending on road circumstances, driver may have a sluggish feel. This is normal, because optimum
traction has highest priority under TCS operation.

When vehicle is passing through a road where surface friction varies, downshifting or depressing acceler-
ator pedal fully may activate TCS temporarily.
VDC

During VDC operation, body and brake pedal lightly vibrate and mechanical sounds may be heard. This is
normal.

If vehicle is rotated on turn table, or rolled and rocked on ship, ABS warning lamp, VDC OFF indicator
lamp, and SLIP indicator lamp may turn on. In this case, start engine on normal road again. If ABS warn-
ing lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off after restart, it is normal.

When starting TCS or VDC under rapid acceleration or hard turn, operating sound by brake pedal is gen-
erated. However, this is not malfunction. This is because TCS and VDC are functioning normally.

VDC may not operate normally or ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp
may turn on when driving special roads with extremely steep slant (banks on circuit road and so on.) How-
ever, it is not malfunction when returning to a normal state after restarting the engine. In that case, be sure
to erase the memory of self-diagnosis. Refer to BRC-24, "
ERASE MEMORY" .

Yaw rate /side G sensor malfunction may occur under hard turn like spin turn, rapid acceleration turn, drift
run, etc., when VDC function is OFF (VDC OFF switch is turned on). It is not malfunction if it is possible to
return to a normal position after restarting engine. Then erase the memory of self-diagnosis. Refer to
BRC-24, "
ERASE MEMORY" .

VDC OFF indicator lamp and SLIP indicator lamp may simultaneously turn on when low tire pressure
warning lamp turns on. This is not a VDC system error but results from characteristic change of tires.

TROUBLE DIAGNOSIS
BRC-23
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2007 April2007 M35/M45
Note 1: Confirm tire pressure is normal.
Note 2: Only AWD models.
Note 3: A brief moment of ON/OFF condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it
is an operation for checking.
Note 4: On and off timing for warning lamp and indicator lamp. Refer to BRC-33, "
ON and OFF Timing for Warning Lamp and Indicator
Lamp" .
CONSULT-II Functions (ABS)NFS000QF
CONSULT-II MAIN FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
VDC FAIL SIG VDC fail-safe signalIn VDC fail-safe ON
VDC is normal OFF
CRANKING SIG Crank operationCrank is active ON
Crank is inactive OFF
USV[FR-RL]
USV[FL-RR]
HSV[FR-RL]
HSV[FL-RR]
(Note 3)VDC switch-over valveWhen actuator (switch-over valve) is
active (“ACTIVE TEST” with CONSULT-
II) or actuator relay is inactive (when in
fail-safe mode)ON
When actuator (switch-over valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF
V/R OUTPUT
(Note 3)Solenoid valve relay activatedWhen the solenoid valve relay is active ON
When the solenoid valve relay is not
active (in the fail-safe mode)OFF
M/R OUTPUT Actuator motor and motor relay activatedWhen the actuator motor and motor relay
are active (“ACTIVE TEST” with CON-
SULT-II)ON
When the actuator motor and motor relay
are inactiveOFF Monitor item Display contentData monitor
ConditionReference value in nor-
mal operation
Diagnostic test mode Function Reference
WORK SUPPORTThis mode enables a technician to adjust some devices faster and
more accurately by following the indications on CONSULT-II.BRC-6, "
Adjustment of Steer-
ing Angle Sensor Neutral
Position"
SELF-DIAG RESULTS Self-diagnostic results can be read and erased quickly.BRC-24, "Self-Diagnosis"
DATA MONITORInput/Output data in the ABS actuator and electric unit (control unit)
can be read.BRC-28, "Data Monitor"
CAN DIAG SUPPORT MNTRThe results of transmit/receive diagnosis of communication can be
read.LAN-44, "CAN Diagnostic
Support Monitor"
ACTIVE TESTDiagnostic Test Mode in which CONSULT-II drives some actuators
apart from the ABS actuator and electric unit (control unit) and also
shifts some parameters in a specified range.BRC-30, "Active Test"
FUNCTION TESTPerformed by CONSULT-II instead of a technician to determine
whether each system is “OK” or “NG”.—
ECU PART NUMBER ABS actuator and electric unit (control unit) part number can be read. —

BRC-34
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSIS FOR SYSTEMPFP:00000
Wheel Sensor CircuitNFS000QL
CAUTION:
Do not check between wheel sensor terminals.
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK TIRE
Check air pressure, wear and size.
Are air pressure, wear and size within standard?
YES >> GO TO 3.
NO >>

Adjust air pressure, or replace tire.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
3. CHECK SENSOR AND SENSOR ROTOR

Check sensor rotor for damage.

Check wheel sensor for damage, disconnection or looseness.
OK or NG
OK >> GO TO 4.
NG >>

Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
4. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30 and
malfunctioning wheel sensor connector E41(FR-RH), E59(FR-LH), B466(RR-RH), B467(RR-LH). Check
terminal to see if it is deformed, disconnected, loose, etc., Repair or replace it if any malfunction condition
is found.
2. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-24, "
Self-Diagnosis" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
Self-diagnosis results
FR RH SENSOR-1, -2
FR LH SENSOR-1, -2
RR RH SENSOR-1, -2
RR LH SENSOR-1, -2
ABS SENSOR [ABNORMAL SIGNAL]

COMBINATION METERS
DI-9
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2007 April2007 M35/M45
FA I L - S A F E
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunc-
tion.
Solution for communication error between the unified meter and A/C amp. and combination meter
Function Specifications
Speedometer
Reset to zero by suspending communication. Tachometer
Fuel gauge
Water temperature gauge
Illumination control Meter illumination When suspending communication, change to nighttime mode.
Dot matrix LCDPush engine starter
The display turns off by suspending communication. A/T position
ICC system
Buzzer The buzzer turns off by suspending communication.
Warning lamp/indicator lampABS warning lamp
The lamp turns on by suspending communication. Brake warning lamp
CRUISE warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
A/T CHECK warning lamp
The lamp turns off by suspending communication. AWD warning lamp
Oil pressure warning lamp
Door warning lamp
Malfunction indicator lamp
CRUISE indicator lamp
SET indicator lamp
Low tire pressure warning lamp
AFS OFF indicator lamp
Front fog indicator lamp
High beam indicator
Turn signal indicator lamp
Key warning lamp

DI-28
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS003UG
For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated in
the A/C auto amp.
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. inputs necessary information for combination meter from each unit with CAN
communication and so on.

Unified meter and A/C amp. outputs signals with communication line (TX, RX) between unified meter and
A/C amp. and combination meter.

Unified meter and A/C amp. corresponds a CONSULT-II function (self-diagnostic results, CAN diagnostic
support monitor and data monitor).
Input/output Signals
Between unified meter and A/C amp. and combination meter.
Unit Input from combination meter Output to combination meter
Unified meter and A/C amp.

Refuel status signal

Low-fuel warning lamp condition signal

Delivery destination data signal

Combination meter receive error signal

Combination meter specifications signal

Odo date signal

Vehicle speed signal

Turn indicator signal

High beam request signal

Ring illumination request signal

Position light request signal

Front fog lamp request signal

SET indicator lamp signal

CRUISE indicator lamp signal

Engine speed signal

Fuel level sensor signal (resistance value)

Engine coolant temperature signal

CAN communication condition signal of A/T

A/T position indicator signal

Manual mode indicator signal

A/T CHECK warning lamp signal

AWD warning lamp signal

Low tire pressure warning lamp signal

VDC OFF indicator lamp signal

SLIP indicator lamp signal

ABS warning lamp signal

Brake warning lamp signal

Malfunction indicator lamp signal

Oil pressure switch signal

Door switch signal

Buzzer request signal

ICC warning lamp signal

Meter display signal

AFS OFF indicator signal

DI-32
UNIFIED METER AND A/C AMP
Revision: 2007 April2007 M35/M45
DATA MONITOR
Operation Procedure
1. Touch “METER A/C AMP” on “SELECT SYSTEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “MAIN SIG-
NALS” is selected, main items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
X: Applicable MAIN SIGNALS Monitors main signals.
SELECTION FROM MENU Selects and monitors individual signal.
SKIA4957E
Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUDescription
SPEED METER [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is input from ABS
actuator and electric unit (control unit).
SPEED OUTPUT [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is transmitted to
each unit with CAN communication.
TACHO METER [rpm] X X Displays the value of engine speed signal, which is input from ECM.
W TEMP METER [°C] or [°F] X XDisplays the value of engine coolant temperature signal, which is
input from ECM.
FUEL METER [lit.] X XDisplays the value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] or [mile] X XDisplays the value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (control unit), fuel gauge and fuel
consumption from ECM.
FUEL W/L [ON/OFF] X X Displays [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF] X Displays [ON/OFF] condition of malfunction indicator lamp.
AIR PRES W/L [ON/OFF] X Displays [ON/OFF] condition of low tire pressure warning lamp.
SEAT BELT W/L [ON/OFF] X Displays [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Displays [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Displays [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Displays [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Displays [ON/OFF] condition of turn indicator.
FR FOG IND [ON/OFF] X Displays [ON/OFF] condition of front fog indicator.
OIL W/L [ON/OFF] X Displays [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] X Displays [ON/OFF] condition of VDC/TCS OFF indicator lamp.
ABS W/L [ON/OFF] X Displays [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Displays [ON/OFF] condition of brake warning lamp. *

DI-78
LANE DEPARTURE WARNING SYSTEM
Revision: 2007 April2007 M35/M45
Camera Aiming AdjustmentNKS003VI
OUTLINE
Adjust the camera aiming every time the LDW camera unit is removed or installed.
CAUTION:

Place the vehicle on the level ground when the camera aiming adjustment is operated.

Follow the CONSULT-II when adjusting the camera aiming. (Camera aiming adjustment cannot be
operated without CONSULT-II.)
PREPARATION

Keep all tires inflated to correct pressures. Adjust the tire pressure to the specified pressure value.

There is no-load in vehicle. Check if coolant, engine oil are filled up to correct level and fuel tank is full.

Shift the gear into “P” position and release the parking brake.

Clean the windshield.
NOTE:
Do not place anything reflective on the upper surface of instrument panel.
TARGET SETTING
Preparation Aiming Adjustment Jig
For aiming adjustment, prepare the following jigs and targets.
PKIB4693E

DTC P0101 MAF SENSOR
EC-193
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
DTC P0101 MAF SENSORPFP:22680
Component DescriptionNBS004UO
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor ModeNBS004UP
Specification data are reference values.
On Board Diagnosis LogicNBS004UQ
PBIA9559J
MONITOR ITEM CONDITION SPECIFICATION
MAS A/F SE-B1 See EC-143, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
CAL/LD VALUE

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No loadIdle 5% - 35%
2,500 rpm 5% - 35%
MASS AIRFLOW

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No loadIdle 2.0 - 6.0 g·m/s
2,500 rpm 7.0 - 20.0 g·m/s
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101Mass air flow sensor cir-
cuit range/performanceA)A high voltage from the sensor is sent to ECM
under light load driving condition.

Harness or connectors
(The sensor circuit is open or
shorted.)

Mass air flow sensor

EVAP control system pressure
sensor

Intake air temperature sensor
B)A low voltage from the sensor is sent to ECM
under heavy load driving condition.

Harness or connectors
(The sensor circuit is open or
shorted.)

Intake air leaks

Mass air flow sensor

EVAP control system pressure
sensor

Intake air temperature sensor

EC-906
[VK45DE]
DTC P0101 MAF SENSOR
Revision: 2007 April2007 M35/M45
DTC P0101 MAF SENSORPFP:22680
Component DescriptionNBS005C5
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor ModeNBS005C6
Specification data are reference values.
On Board Diagnosis LogicNBS005C7
PBIA9559J
MONITOR ITEM CONDITION SPECIFICATION
MAS A/F SE-B1 See EC-847, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
CAL/LD VALUE

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No loadIdle 14% - 33%
2,500 rpm 12% - 25%
MASS AIRFLOW

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No loadIdle 2.0 - 6.0 g·m/s
2,500 rpm 7.0 - 20.0 g·m/s
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101Mass air flow sensor circuit
range/performanceA)A high voltage from the sensor is sent to ECM
under light load driving condition.

Harness or connectors
(The sensor circuit is open or
shorted.)

Mass air flow sensor

EVAP control system pressure
sensor

Intake air temperature sensor
B)A low voltage from the sensor is sent to ECM
under heavy load driving condition.

Harness or connectors
(The sensor circuit is open or
shorted.)

Intake air leaks

Mass air flow sensor

EVAP control system pressure
sensor

Intake air temperature sensor