2007 INFINITI M35 warning

BL-88
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
POWER WINDOW DOWN FUNCTION MALFUNCTION
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
77, "Trouble Diagnosis Procedure" .

If the following “symptoms” are detected, check systems shown in the “Diagnoses/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)

Ignition switch is in OFF or ACC position.

Retained power operation does not operate. Refer to GW-17, "RETAINED POWER OPERATION" .
WARNING FUNCTION MALFUNCTION
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
77, "Trouble Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnosis/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)
Warning chime functions operating condition is extremely complicated, during operating confirmations, recon-
firm the list above twice in order to ensure proper operation.
Symptom Diagnosis/service procedure Reference page
Power window down function does not
operate.1. Check “P/W DOWN DELAY” setting in “WORK SUPPORT”.BL-81
2. Check Intelligent Key battery inspection.BL-124
Symptom Diagnosis/service procedure Reference page
OFF position warn-
ing does not oper-
ate.For internal1. Check ignition switch position.BL-115
2. Check door switch.BL-94
3. Check warning chime function.BL-123
4. Replace Intelligent Key unit.BL-123
For external1. Check ignition switch position.BL-1152. Check door switch.BL-94
3. Check Intelligent Key warning buzzer.BL-105
4. Replace Intelligent Key unit.BL-123
P position warning does not operate.1. Check Park position switch.BL-113
2. Check door switch.BL-94
3. Check Intelligent Key warning buzzer.BL-105
4. Check warning chime function.BL-123
5. Check combination meter display.BL-122
6. Replace Intelligent Key unit. BL-123
ACC warning does not operate1. Check ignition switch position.BL-1152. Check warning chime function.BL-123
3. Check combination meter display.BL-122
4. Replace Intelligent Key unit.BL-123

INTELLIGENT KEY SYSTEM
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Revision: 2007 April2007 M35/M45
Take away warning
does not operate.Door open to close1. Check door switch.BL-94
2. Check inside key antenna.BL-110
3. Check Intelligent Key warning buzzer.BL-105
4. Check warning chime function.BL-123
5. Check key slot illumination.BL-121
6. Check combination meter display.BL-122
7. Replace Intelligent Key unit. BL-123
Push-button ignition
switch operation1. Check ignition switch position.BL-115
2. Check inside key antenna.BL-110
3. Check warning chime function.BL-123
4. Check key slot illumination.BL-121
5. Check combination meter display.BL-122
6. Replace Intelligent Key unit. BL-123
Door is open1. Check ignition switch position.BL-1152. Check inside key antenna.BL-110
3. Check combination meter display.BL-122
4. Replace Intelligent Key unit. BL-123
Take away through
window1.Check “TAKE OUT FROM WINDOW WARN” setting in
“WORK SUPPORT”.BL-81
2. Check inside key antenna.BL-110
3. Check warning chime function.BL-123
4. Check key slot illumination.BL-121
5. Check combination meter display.BL-122
6. Replace Intelligent Key unit. BL-123
Key warning chime does not operate.1. Check key slot.BL-92
2. Check door switch.BL-94
3. Check warning chime function.BL-123
4. Check key slot illumination.BL-121
5. Check combination meter display.BL-122
6. Replace Intelligent Key unit. BL-123
Door lock operation warning chime does
not operate.1. Check door switch.BL-94
2. Check key slot illumination.BL-121
3. Check Intelligent Key warning buzzer.BL-105
4. Check inside key antenna.BL-110
5. Replace Intelligent Key unit. BL-123
Symptom Diagnosis/service procedure Reference page

INTELLIGENT KEY SYSTEM
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Revision: 2007 April2007 M35/M45
Check Intelligent Key Warning BuzzerNIS001XT
1. CHECK INTELLIGENT KEY WARNING BUZZER
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Intelligent Key warning buzzer is OK.
NG >> GO TO 2.
2. CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key warning buzzer connector.
3. Check voltage between Intelligent Key warning buzzer connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace Intelligent Key warning buzzer power
supply circuit.
3. CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector and Intelligent Key warning buzzer connector.
3. Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between Intelligent Key unit and Intelligent Key warning buzzer.
Te r m i n a l s
Warning
buzzer opera-
tion conditionVoltage (V)
(Approx.) (+)
(–)
Intelligent Key
unit connectorTerminal
M33 55 GroundYe s 0
No Battery voltage
PIIB6341E
Terminals
Voltage (V)
(Approx.) (+)
(–) Intelligent Key
warning buzzer
connectorTerminal
E37 3 Ground Battery voltage
PIIB6342E
AB
Continuity
Intelligent Key
unit connectorTerminalIntelligent Key
warning buzzer
connectorTerminal
M33 55 E37 1 Yes
A
GroundContinuity
Intelligent Key unit
connectorTerminal
M33 55 No
PIIB6343E

BL-106
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
4. CHECK INTELLIGENT KEY WARNING BUZZER OPERATION
Connect battery power supply to Intelligent Key warning buzzer terminals 1 and 3, and check the operation.
OK or NG
OK >> Intelligent Key warning buzzer is OK.
NG >> Replace Intelligent Key warning buzzer.
Check Outside Key Antenna (Driver Side and Passenger Side)NIS001XU
1. CHECK OUTSIDE KEY ANTENNA FUNCTION
With CONSULT-II
1. Check the operation with (“ANTENNA”) in the ACTIVE TEST.
2. Touch “DRIVER ANT” and “ASSIST ANT” on screen.
3. Carry the Intelligent Key into the antenna detection area.
Does the hazard lamps flash?
Yes >> Outside key antenna (driver side or passenger side) is OK.
No >> GO TO 2.
2. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with oscilloscope.
OK or NG
OK >> Check the condition of harness and connector.
NG >> GO TO 3.1 (BAT-) - 3 (BAT+) : the buzzer sounds
PIIB6344E
Test item Corresponding antenna
DRIVER ANT Outside key antenna driver side
ASSIST ANT Outside key antenna passenger side
PIIB6345E
Te r m i n a l s
ConditionSignal
(Reference value.) (+)
(–)
Intelligent Key
unit connectorTermi-
nal
M32Driver
side24
GroundDoor
request
switch is
pushed Passen-
ger side11
PIIB8923E
SIIA1910J

BL-122
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
Check Horn FunctionNIS001Y2
First perform the “SELF-DIAG RESULTS” of “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated in “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-13, "
CAN Com-
munication Inspection Using CONSULT-II (Self-Diagnosis)".
1. CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
Yes >> GO TO 2.
No >> Check horn circuit. Refer to WW-54, "
HORN" .
2. CHECK IPDM E/R INPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> GO TO 3.
3. CHECK HORN RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R connector and horn relay connector.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Combination Meter Display FunctionNIS001Y3
1. CHECK METER DISPLAY
With CONSULT-II
Check the operation with (“LCD”) in the ACTIVE TEST.
OK or NG
OK >> Meter display is OK.
NG >> Check combination meter. Refer to DI-17, "
Self-Diagno-
sis Mode of Combination Meter" .
Terminals
Voltage (V)
(Approx.) (+)
(–)
IPDM E/R
connectorTerminal
E9 48 Ground Battery voltage
PIIB6219E
AB
Continuity
IPDM E/R
connectorTe r m i n a lHorn relay
connectorTerminal
E9 48 E20 1 Yes
PIIB6220E
Is each warning displayed on meter display?
PIIB6369E

INTELLIGENT KEY SYSTEM
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Revision: 2007 April2007 M35/M45
Check Warning Chime FunctionNIS001Y4
1. CHECK WARNING CHIME INTO COMBINATION METER OPERATION
With CONSULT-II
1. Check the operation with “INSIDE BUZZER” in the “ACTIVE
TEST”.
2. Touch “TAKE OUT”, “KEY WARN”, “P RNG WARN” or “ACC
WARN” on screen.
Does warning buzzer sound?
Yes >> Warning buzzer into combination meter is OK.
No >> GO TO 2.
2. CHECK OTHER WARNING CHIME OPERATION
Confirm other warning chime function. Refer to DI-60, "
LIGHT WARNING CHIME" .
Does other warning chime operate?
Yes >> Warning buzzer into combination meter is OK
No >> Check warning chime. Refer to DI-70, "
Trouble Diagnosis" .
Removal and Installation of Intelligent Key UnitNIS001Y5
REMOVAL
1. Remove dash side finisher. Refer to EI-37, "Removal and Installation" .
2. Disconnect intelligent key unit connector.
3. Remove intelligent key unit mounting nuts, and then remove
intelligent key unit.
INSTALLATION
Installation is in the reverse order of removal.
PIIB6451E
PIIB5900E

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-152
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
*: Select “SELECTION FROM MENU”.
WORK SUPPORT
DOOR SW DR*Indicates [OPEN/CLOSE] condition of front door switch driver side from BCM via CAN communica-
tion line.
DOOR SW AS*Indicates [OPEN/CLOSE] condition of front door switch passenger side from BCM via CAN commu-
nication line.
DOOR SW RR* Indicates [OPEN/CLOSE] condition of rear door switch LH from BCM via CAN communication line.
DOOR SW RL* Indicates [OPEN/CLOSE] condition of rear door switch RH from BCM via CAN communication line.
DOOR BK SW* Indicates [OPEN/CLOSE] condition of back door switch from BCM via CAN communication line.
TRUNK SW*Indicates [OPEN/CLOSE] condition of trunk room lamp switch from BCM via CAN communication
line.
VEHICLE SPEED* Indicates [km/h] condition of vehicle speed.Monitor item Content
Monitor item Description
CONFIRM KEY FOB ID It can be checked whether Intelligent Key ID code is registered or not in this mode.
TAKE OUT FROM WINDOW
WARNTake away warning chime (from window) mode can be changed to operate (ON) or not operate
(OFF) with this mode. The operation mode will be changed when “CHANGE SETT” on CON-
SULT-II screen is touched.
LOW BAT OF KEY FOB WARNIntelligent Key low battery warning mode can be changed to operate (ON) or not operate (OFF)
with this mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-II
screen is touched.
ANSWER BACK FUNCTIONHazard and buzzer reminder function mode can be changed to operate (ON) or not operate
(OFF) with this mode. The operation mode will be changed when “CHANGE SETT” on CON-
SULT-II screen is touched.
SELECTIVE UNLOCK FUNC-
TIONSelective unlock function mode can be changed to operate (ON) or not operate (OFF) with this
mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-II screen is
touched.
ANTI KEY LOCK IN FUNCTIONKey reminder function mode can be changed to operate (ON) or not operate (OFF) with this
mode. The operation mode will be changed when “CHANGE SETT” on CONSULT-II screen is
touched.
HORN WITH KEYLESS LOCKHorn reminder function mode by Intelligent Key button can be changed to operate (ON) or not
operate (OFF) with this mode. The operation mode will be changed when “CHANGE SETT” on
CONSULT-II screen is touched.
HAZARD ANSWER BACKHazard reminder function mode can be selected from the following with this mode. The operation
mode will be changed when “CHANGE SETT” on CONSULT-II screen is touched.

LOCK ONLY: Door lock operation only

UNLOCK ONLY: Door unlock operation only

LOCK/UNLOCK: Lock/Unlock operation

OFF: Non-operation
ANSWER BACK WITH I-KEY
LOCKBuzzer reminder function (lock operation) mode by door request switch (driver side and passen-
ger side) can be selected from the following with this mode. The operation mode will be changed
when “CHANGE SETT” on CONSULT-II screen is touched.

HORN CHIRP: Sound horn

BUZZER: Sound Intelligent Key warning buzzer

OFF: Non-operation
ANSWER BACK WITH I-KEY
UNLOCKBuzzer reminder function (unlock operation) mode by door request switch can be changed to
operate (ON) or not operate (OFF) with this mode.
AUTO RELOCK TIMERAuto door lock timer mode can select the following with this mode.

1 min

5 min

OFF: Non-operation