ECO mode INFINITI M35 2007 Factory Service Manual

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 M35/M45
PRECAUTIONS FOR INTELLIGENT KEY SYSTEM

In the Intelligent Key system of model Y50, the transponder (the chip for immobilizer ID verifica-
tion) is integrated into the Intelligent Key. (For the conventional models, it is integrated into the
mechanical key.) Therefore, the mechanical key cannot perform the ID verification, and thus it can-
not start the engine. Instead of it, the immobilizer ID verification can be performed by inserting the
Intelligent Key into the key slot, and then it can start the engine.

When registering the Intelligent Key, 2 registration procedures (immobilizer ID registration and
Intelligent Key ID registration) should be performed. The immobilizer ID registration is the proce-
dure that registers the ID stored into the transponder (integrated into Intelligent Key) to the BCM.
The Intelligent Key ID registration is the procedure that registers the ID to the Intelligent Key unit.
Each registration is a different procedure.

When performing the Intelligent Key ID registration only, the engine cannot be started by inserting
the key into the key slot. When performing the engine immobilizer ID registration only, the engine
cannot be started by the operation when carrying the key. The registrations of both systems
should be performed.
Operation DescriptionNIS001Y9
SYSTEM DIAGRAM
OPERATION WHEN INTELLIGENT KEY IS CARRIED
Description
1. When the push-button switch is pressed, the Intelligent Key unit signals the inside key antenna and sends
the request signal to the Intelligent Key.
2. The Intelligent Key receives the request signal and sends the Intelligent Key ID signal to the Intelligent
Key unit via the remote keyless entry receiver.
3. The Intelligent Key receives the Intelligent Key ID signal and verifies it with the registered ID.
4. If the ID is successfully verified, the Intelligent Key unit sends the steering unlock signal to the steering
lock unit. Then, it sends each power supply request signal to PDU (Power Distribution Unit) after unlock-
ing the steering lock.
5. If the Intelligent Key unit judges that the engine start condition is satisfied, it sends the starter request sig-
nal via CAN communication to IPDM E/R and turns the starter motor relay ON.
6. The steering lock unit unlocks the steering lock when receiving the signal. PDU starts the power supply
distribution according to the push-button ignition switch operation when receiving the signal. If it enters the
engine start permission mode, the power supply is supplied from PDU to the starter motor relay and the
cranking is started.
CAUTION:
If a malfunction is detected in the Intelligent Key system, the “KEY” warning lamp in the combina-
tion meter illuminates for 15 seconds. At that time, the engine cannot be started.
7. When Intelligent Key unit received feedback signal from ECM acknowledging the engine has been initi-
ated, the Intelligent Key unit sends a stop signal to IPDM E/R and stops the cranking by turning OFF the
PIIB6272E

BL-166
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
DIAGNOSTIC PROCEDURE
1. CHECK STOP LAMP SIGNAL
With CONSULT-II
Check (“STOP LAMP SW”) in DATA MONITOR mode with CONSULT-II.
Without CONSULT-II
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> XXX
NG >> Check the following.

10A fuse [No.20, located in the fuse block (J/B)]

Harness for open or short between fuse block and Intelligent Key unit.
DTC B2556 ENG START SWNIS001YT
DIAGNOSIS DESCRIPTION
When the push-button ignition switch input, which inputs to the Intelligent Key unit, continues for 100 seconds
or more, B2556 push-button ignition switch judges that it is the malfunction and displays the DTC (Diagnostic
Trouble Code)
TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
SELF-DIAGNOSTIC LOGIC
When depressing the break pedal
STOP LAMP SW : ON
PIIB6238E
Terminals
Voltage (V)
(Approx.) (+)
(–)
Intelligent Key unit
connectorTerminal
M32 63 Ground Battery voltage
PIIB8927E
Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
39 BR/WPush-button ignition
switch—Push-button ignition switch is pressed 0
Push-button ignition switch is released Battery voltage
DTCSelf-diagnosis
nameDTC detecting condition Possible causes
B2556 ENG START SWInput signal from push-button ignition switch to Intelli-
gent Key unit continues for 100 seconds or more

Harness and connector
(Open in the circuit between the
units)

Push-button ignition switch

BL-212
TRUNK LID OPENER
Revision: 2007 April2007 M35/M45
CONSULT-II Function (BCM)NIS001ZR
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure"
DATA MONITOR
ACTIVE TEST
BCM diagnosis
partInspection item, self-diagnosis
modeContent
TRUNKDATA MONITOR Displays the input data of BCM in real time basis.
ACTIVE TEST Give a drive signals to load to check the operation check.
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEY ON SW Indicates [ON/OFF] condition of Intelligent Key inserted in key slot.
I KEY TRUNK/HAT Indicates [ON/OFF] condition of trunk lid open signal from Intelligent Key.
TRUNK OPNR SW Indicates [ON/OFF] condition of trunk lid opener switch.
VEHICLE SPEED This item displays vehicle speed.
Test item Content
TRUNK/GLASS HATCHThis test is able to check trunk lid opener actuator open operation. This actuator openes when “ON” on
CONSULT-II screen is touched.

BL-230
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2007 April2007 M35/M45
CONSULT-II Function (BCM)NIS00201
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CAUTION:
CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected in
self-diagnosis depending on control units with carry out CAN communication.
BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
CONSULT-II APPLICATION ITEM
Work Support
Data Monitor
BCM diagnosis
positionInspection items and diagnosis mode Description
THEFT ALMDATA MONITOR Displays the input data to BCM in real time basis.
ACTIVE TEST Gives a drive signal to a load to check the operation.
WORK SUPPORT Changes setting of each function.
Test Item Description
SECURITY ALARM SET This mode is able to confirm and change security alarm ON-OFF setting.
THEFT ALM TRGThe switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching “CLEAR”
on CONSULT-II screen.
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
I-KEY DR UNLK Indicates [ON/OFF] condition of unlock signal from driver side door request switch.
I-KEY AS UNLK Indicates [ON/OFF] condition of unlock signal from passenger side door request switch.
I-KEY LOCK Indicates [ON/OFF] condition of lock signal from Intelligent Key.
I-KEY UNLOCK Indicates [ON/OFF] condition of unlock signal from Intelligent Key.
I-KEY TRNK/HAT Indicates [ON/OFF] condition of trunk opener signal from Intelligent Key.
TRUNK OPNR SW This is displayed even when it is not equipped.
TRUNK CYL SW This is displayed even when it is not equipped.
TRUNK OPN MNTR Indicates [ON/OFF] condition of trunk room lamp switch.
HOOD SW Indicates [ON/OFF] condition of hood switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch LH.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch RH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW This is displayed even when it is not equipped.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from front door key cylinder switch.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from front door key cylinder switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.

BL-232
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2007 April2007 M35/M45
3. CHECK ALARM FUNCTION
1. After 30 seconds, security indicator lamp will start blink.
2. Open any door or hood before unlocking with Intelligent Key or mechanical key, or open trunk lid without
Intelligent Key or mechanical key.
Do alarm function properly.
OK >> GO TO 4.
NG >> Check the following.

The vehicle security system does not phase in alarm mode. Refer to BL-241, "Diagnostic Pro-
cedure 2" .

Alarm (horn, headlamp and hazard lamp) do not operate. Refer to BL-242, "Diagnostic Proce-
dure 3" .
4. CHECK ALARM CANCEL OPERATION
Unlock any door or open trunk lid using Intelligent Key or mechanical key.
Alarm (horn, headlamp and hazard lamp) should stop.
OK >> INSPECTION END.
NG >> Perform diagnosis and repair. Refer to BL-242, "
Diagnostic Procedure 4" .

BL-266
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2007 April2007 M35/M45
7. Select “NATS V.5.0”.
If “NATS V5.0” is not indicated, go to GI-39, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
8. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual
NATS-IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NOTE:

When any initialization is performed, all ID previously registered will be erased and all NATS ignition keys
must be registered again.

The engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE
OF KEY” or “LOCK MODE” as a self-diagnostic result on the CONSULT-II screen.
PIIB6275E
PIIB6276E
System Diagnosis mode DescriptionReference
page
NATS V5.0C/U INTIALIZATIONPerform registration again after repair, part replacement, and
additional key ID registration.
CAUTION:
“Control Unit Initialization” is activated only after per-
forming “Release steering lock”.Refer to the
Technical Bul-
letin.
SELF-DIAG RESULTS

Malfunctioning system stored in the ECM is displayed.

Printing the contents

Erasing the error recordBL-268
NATS BCM or S/ENTPIN READThe specified numbers of each control unit for acquisition of
password for control unit initialization are displayedRefer to the
Technical Bul-
letin.
STEERING LOCK
RELEASEIf the engine switch cannot be operated (the steering lock
cannot be released), release the steering lock forcibly and
make the engine switch operation possible.
CAUTION:
Always perform “Control Unit Initialization” and “Immo-
bilizer ID Registration” after performing “Release Steer-
ing Lock”.Refer to the
Technical Bul-
letin.
SELF-DIAG RESULTS

Malfunctioning system stored in the BCM is displayed.

Printing the contents

Erasing the error recordBL-268
NATS I-KEY SELF-DIAG RESULTS

Malfunctioning system stored in the Intelligent Key unit is
displayed.

Printing the contents

Erasing the error recordBL-269

BR-34
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsNFS000SM
Unit: mm (in)
Brake PedalNFS000SN
Unit: mm (in)
Brake BoosterNFS000SO
Vacuum type
Unit: mm (in)
Check ValveNFS000SP
Front Disc BrakeNFS000SQ
Unit: mm (in)
Rear Disc BrakeNFS000SR
Unit: mm (in) Front brakeCylinder bore diameter 45.0 (1.772) × 2
Pad length × width × thickness 132.0 × 50.0 × 11.0 (5.20 × 1.969 × 0.433)
Rotor outer diameter × thickness 320 × 28 (12.60 × 1.10)
Rear brake Cylinder bore diameter 42.86 (1.687)
Pad length × width × thickness 83.0 × 31.9 × 8.5 (3.268 × 1.256 × 0.335)
Rotor outer diameter × thickness 308 × 16 (12.13 × 0.63)
Master cylinder Cylinder bore diameter 25.4 (1)
Control valve Valve model Electric brake force distribution
Brake booster Diaphragm diameter 255 (10)
Recommended brake fluid DOT 3
Brake pedal height (from dash lower panel top surface) 157 − 167 (6.18 − 6.57)
Depressed pedal height
[under a force of 490 N (50 kg, 110 lb) with engine running]90 (3.54) or more
Clearance between threaded end of the stop lamp switch/brake
switch and bracket 0.74 − 1.96 (0.0291 −0.0772)
Pedal play3 − 11 (0.12 − 0.43)
Input rod installation standard dimension 125 (4.92)
Vacuum leakage
[at vacuum of – 66.7 kPa (– 500 mmHg, – 19.69 inHg)]Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
Brake padStandard thickness 11.0 (0.433)
Repair limit thickness 2.0 (0.079)
Disc rotorStandard thickness 28.0 (1.102)
Wear limit 26.0 (1.024)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout limit (with it attached to the vehicle) 0.035 (0.0014)
Brake padStandard thickness 8.5 (0.335)
Repair limit thickness 2.0 (0.079)
Disc rotorStandard thickness 16.0 (0.631)
Wear limit 14.0 (0.551)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout limit (with it attached to the vehicle) 0.055 (0.0022)

TROUBLE DIAGNOSIS
BRC-23
[VDC/TCS/ABS]
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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-30
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
×:Applicable
–:Not applicable
Note: Only AWD models
Active TestNFS000QI
CAUTION:

Do not perform active test while driving vehicle.

Make sure to completely bleed air from brake system.

The active test cannot be performed with the ABS warning lamp, VDC indicator lamp, SLIP indica-
tor lamp and brake warning lamp are on.

ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are on
during active test.

Erase memory of ICC system after implementing active test. Refer to ACS-34, "Self-Diagnostic
Function" .
OPERATION PROCEDURE
1. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "CONSULT-II Start Procedure" .
2. Touch “SELECT TEST ITEM” is displayed.
3. Touch necessary test item.
4. While “MAIN SIGNALS” indication is inverted, touch “START”.
5. “ACTIVE TEST” screen will be displayed so perform the following test.
NOTE:

When active test is performed while depressing the pedal, the pedal depression amount will change.
This is normal. (Only solenoid valve and ABS motor)

“TEST IS STOPPED” is displayed 10 seconds after operation start.

After “TEST IS STOPPED” is displayed, to perform test again, touch “BACK” and repeat step 3.
USV[FR-RL]
(ON/OFF)——×
VDC switch-over valve USV[FL-RR]
(ON/OFF)——×
HSV[FR-RL]
(ON/OFF)——×
HSV[FL-RR]
(ON/OFF)——×
V/R OUTPUT
(ON/OFF)——×Solenoid valve relay activated
M/R OUTPUT
(ON/OFF)——×Actuator motor and motor relay activated Item
(Unit)Data monitor item selection
Display content
ECU INPUT
SIGNALSMAIN SIGNALSSELECTION
FROM MENU
SFIA0591E

COMBINATION METERS
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Revision: 2007 April2007 M35/M45
COMBINATION METERSPFP:24814
System DescriptionNKS003TV
UNIFIED METER CONTROL UNIT

Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the
unified meter control unit, which is built into the combination meter. Unified meter control unit receives sig-
nals from unified meter and A/C amp.

Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.

Digital meter is adopted for odo/trip meter.
NOTE:
The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.

Dot matrix LCD is adopted to display “push engine starter”, “A/T position” and “ICC system* ”.

Odo/trip meter and dot matrix LCD segments can be checked in self-diagnosis mode.

Meters/gauges can be checked in self-diagnosis mode.
*: With ICC system
UNIFIED METER AND A/C AMP.
Refer to DI-28, "COMBINATION METER CONTROL FUNCTION" in “UNIFIED METER AND A/C AMP”.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times

through 10A fuse [No. 21, located in the fuse block (J/B)]

to combination meter terminal 23,

through 10A fuse [No. 19, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 54.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)],

to combination meter terminal 2, and

to unified meter and A/C amp. terminal 41.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 12,

through 10A fuse [No. 12, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 53.
Ground is supplied

to combination meter terminals 9, 10 and 11

to unified meter and A/C amp. terminals 55 and 71

through grounds M16 and M70.