2007 INFINITI M35 sensor

BL-22
RADIATOR CORE SUPPORT
Revision: 2007 April2007 M35/M45
8. Remove air guide (LH/RH).
9. Remove power steering tube assembly. Refer to PS-44, "
Removal and Installation" .
10. Remove horn (High/Low). Refer to WW-55, "
Removal and Installation" .
11. Remove mounting harness clip on radiator core support assembly, the harness is separate.
12. Remove ICC sensor integrated unit. Refer to ACS-70, "
ICC Sensor Integrated Unit" .
13. Remove upper radiator bracket (LH/RH) with power tool.
14. Remove radiator core support side with power tool.
15. Remove radiator core support side (LH/RH) with power tool.
16. Remove radiator core support center.
CAUTION:
Put a wooden block under the radiator assembly to prevent
the radiator assembly from falling.
INSTALLATION
Install in the reverse order of removal.
PIIB3891J
PIIB3892J
PIIB3890J

BL-44
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
7. Unified meter and A/C amp. M64, M65 8. Trunk opener cancel switch M99 9. Front door switch (Driver side) B11
10. Rear door switch LH B53 11. Front door lock assembly D14
(Unlock sensor) 12. Trunk lid lock assembly T106
(Trunk room lamp switch)

BL-74
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
17 O/BOutside key antenna
(+) signal
(Trunk room)
Output LOCKPress trunk opener request
switch.
18 LOutside key antenna
(-) signal
(Trunk room)
19 BR/Y Key switch signal Input LOCKInsert Intelligent Key into key slot. 0
Remove Intelligent Key from key
slot.Battery voltage
20 B Ground — ON — 0
22 ODoor request switch
(passenger side)Input —Press door request switch
(passenger side).0
Other than above 5
23 BTrunk lid opener can-
cel switchInput —Trunk lid opener cancel switch is
ON0
Trunk lid opener cancel switch is
OFF (cancel)5
24 O/LOutside key antenna
(+) signal (driver side)
Output LOCKPress door request switch (driver
side).
25 YOutside key antenna
(-) signal (driver side)
26 BR/WUnlock sensor
(driver side)Input —Door (driver side) is locked. Battery voltage
Door (driver side) is unlocked. 0
27 V P range switch Input —Selector lever is in “P” position. 0
Other than above Battery voltage
30 L/W Ignition switch (ACC) Input ACC — Battery voltage
31 GR Ignition switch (ON) Input ON — Battery voltage
35 LG Vehicle speed signal Input ONAt speedometer operation (vehi-
cle speed approx. 40 km/h)
37 P CAN-LInput/
Output—— —
38 L CAN-HInput/
Output—— —
39 BR/WPush-button ignition
switch signalInput —Press push-button ignition switch 0
Other than above Battery voltage
40 B Ground — ON — 0
41 Y Power source (Fuse) Input — — Battery voltage Termi-
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
Approx. Ignition
Switch
PositionOperation or Conditions
SIIA1910J
SIIA1910J
PKIA1935E

BL-80
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
CAUTION:
When CAN COMM [U1000] and CONTROL UNIT (CAN) [U1010] are displayed, give priority to performing trouble diagnosis.
DATA MONITOR
STRG COMM 1
[B2013]Communication malfunction with steering lock unit is
detectedCheck steering lock unitBL-155
STEERING LOCK UNIT
[B2551]Even if the communication with steering lock unit is
normally performed, the steering lock is malfunctioningReplace steering lock
unitBL-157
INTELLIGENT KEY
[B2552]Internal malfunction is detected in Intelligent Key unitReplace Intelligent Key
unit.BL-161
IGN POWER CIRCUIT
[B2553]It continues for 2 seconds or more that ON power sup-
ply input to Intelligent Key unit is excessively low when
the power supply position is in ON positionCheck Intelligent Key
unit ON power supply
inputBL-161
ACC POWER CIRCUIT
[B2554]It continues for 2 seconds or more that ACC power
supply input to Intelligent Key unit is excessively low
when the power supply position is in ACC or ON posi-
tionCheck Intelligent Key
unit ACC power supply
inputBL-162
STOP LAMP CIRCUIT
[B2555]5V or less is detected at both the stop lamp switch sig-
nal input circuit that is input to Intelligent Key unit and
the monitor input before stop lamp switchCheck stop lamp switchBL-165
ENG START SW
[B2556]Condition that push-button ignition switch is pushed is
detected continuously for 100 seconds or moreCheck push-button igni-
tion switchBL-166
VEHICLE SPEED
[B2557]Some differences occur on one or more vehicle speed
inputs of Intelligent Key unitCheck vehicle speed sig-
nalBL-167
SHIFT POSITION
[B2558]

There is a difference between the shift position input
via CAN communication and the P position input by
detente switch

Vehicle speed (5 km/h or more) is detected continu-
ously for 10 seconds or more even if the shift posi-
tion is detected in P position when the power supply
position is in ON positionCheck shift position inputBL-170
PDU
[B2559]Internal malfunction is detected in PDU Replace PDUBL-172
START POW SUP CIRC
[B2560]Though the engine start operation is not performed,
starter relay in IPDM E/R is ONCheck starter power sup-
plyBL-172
LOW VOLTAGE
[B2562]Battery power supply input to Intelligent Key unit (8.8V
or less) is detected continuously for 1.5 seconds or
moreCheck battery low volt-
ageBL-175
HI VOLTAGE
[B2563]Battery power supply input to Intelligent Key unit (18V
or more) is detected continuously for 90 seconds or
moreCheck for battery high
voltageBL-176
NATS MALFUNCTION
[B2590]Malfunction is detected in immobilizer systemCheck (IVIS) NATS trou-
ble diagnosis procedureBL-244
Suspect Systems
[DTC]Diagnostic item is detected when... Repair work Reference page
Monitor item Content
DR REQ SW Indicates [ON/OFF] condition of door request switch (driver side).
AS REQ SW Indicates [ON/OFF] condition of door request switch (passenger side).
BD/TR REQ SW Indicates [ON/OFF] condition of trunk opener request switch.
ON POS Indicates [ON/OFF] condition of ignition switch in ON position.
ACC POS Indicates [ON/OFF] condition of ignition switch in ACC position.
DOOR STAT SW Indicates [ON/OFF] condition of door unlock sensor.
STOP LAMP SW Indicates [ON/OFF] condition of stop lamp switch.
P RANGE SW Indicates [ON/OFF] condition of park position switch.

INTELLIGENT KEY SYSTEM
BL-85
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2007 April2007 M35/M45
REMOTE KEYLESS ENTRY 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)

Intelligent Key is out of key slot.

Ignition switch is not ON position.

All doors are closed.
Door lock/unlock does not operate by request
switch (driver side).1. Check door request switch (driver side).BL-992. Check outside key antenna (driver side).BL-106
3. Replace Intelligent Key unit.BL-123
Door lock/unlock does not operate by request
switch (passenger side).1. Check door request switch (passenger side).BL-992. Check outside key antenna (passenger side).BL-106
3. Replace Intelligent Key unit.BL-123
Selective unlock function does not operate by
door request switch (driver side) (other door
lock function operate).1.Check “SELECT UNLOCK FUNCTION” setting in
“WORK SUPPORT”.BL-81
2.Check selective unlock function with a remote control-
ler or door key cylinder.BL-26
3. Replace BCM.BCS-15
Selective unlock function does not operate by
door request switch (passenger side) (other
door lock function operate).1.Check “SELECT UNLOCK FUNCTION” setting in
“WORK SUPPORT”.BL-81
2. Replace Intelligent Key unit.BL-123
Auto lock function does not operate.1.Check “AUTO RELOCK TIMER” setting in “WORK
SUPPORT”.BL-812. Check door switch.BL-94
3. Check key slot.BL-92
4. Replace BCM.BCS-15
Key reminder function does not operate.1.Check “ANTI KEY LOCK IN FUNCTION” setting in
“WORK SUPPORT”.BL-81
2. Check door switch.BL-94
3. Check inside key antenna.BL-110
4. Check unlock sensor.BL-103
5. Check Intelligent Key battery inspection.BL-124
6. Replace Intelligent Key unit.BL-123
Symptom Diagnosis/service procedure Reference page
Symptom Diagnosis/service procedureReference
page
All of the remote keyless entry functions
do not operate.1. Check Intelligent Key battery inspection.BL-124
2. Replace Intelligent Key unit.BL-123
Selective unlock function does not operate
by Intelligent Key.1.Check “SELECT UNLOCK FUNCTION” setting in “WORK SUP-
PORT”.BL-81
2. Check Intelligent Key battery inspection.BL-124
3. Replace Intelligent Key unit.BL-123

BL-86
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
TRUNK OPEN 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)

Intelligent Key is out of key slot.

All doors are closed.
Auto lock function does not operate prop-
erly.1. Check “AUTO RELOCK TIMER” setting in “WORK SUPPORT”.BL-812. Check door switch.BL-94
3. Check key slot.BL-92
4. Replace BCM.BCS-15
Key reminder function does not operate.1.Check “ANTI KEY LOCK IN FUNCTION” setting in “WORK SUP-
PORT”.BL-81
2. Check door switch.BL-94
3. Check inside key antenna.BL-110
4. Check unlock sensor.BL-103
5. Check Intelligent Key battery inspection.BL-124
6. Replace Intelligent Key unit.BL-123
Panic alarm function does not operate.1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.BL-81
2. Check theft warning operation.BL-217
3. Check Intelligent Key battery inspection.BL-124
4. Check key slot.BL-92
5. Replace Intelligent Key unit.BL-123
Symptom Diagnosis/service procedureReference
page
Symptom Diagnosis/service procedure Reference page
Trunk open function does not operate by trunk
opener request switch.1. Check trunk opener request switch.BL-101

2. Check trunk lid opener cancel switch.BL-119
3. Check outside key antenna (trunk room).BL-108
4. Replace Intelligent Key unit.BL-123
Trunk open function does not operate by Intelli-
gent Key.1.Check “TRUNK OPEN DELAY” setting in “WORK
SUPPORT”.BL-812. Check trunk lid opener system.BL-207
3. Check trunk room lamp switch.BL-97
4. Check Intelligent Key battery inspection.BL-124
5. Replace Intelligent Key unit.BL-123
Key reminder function does not operate.1. Check door switch.BL-94
2. Check trunk room lamp switch.BL-97
3. Check inside key antenna (trunk room).BL-110
4. Check trunk lid opener system.BL-207
5. Replace Intelligent Key unit.BL-123

INTELLIGENT KEY SYSTEM
BL-103
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2007 April2007 M35/M45
5. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
1. Connect Intelligent Key unit connector.
2. Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace Intelligent Key unit.
Check Unlock SensorNIS001XS
1. CHECK UNLOCK SENSOR POWER SUPPLY
With CONSULT-II
Check unlock sensor (“DOOR STAT SW”) in “DATA MONITOR” mode.
Without CONSULT-II
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2.
Terminals
Voltage (V)
(Approx.) (+)
(–)
Intelligent Key unit
connectorTerminal
M33 61 Ground 5
PIIB8990E
Monitor item Condition
DOOR STAT SWFront door lock (driver side) LOCK: ON
Front door lock (driver side) UNLOCK: OFF
PIIB6399E
Terminals
Front door
lock
(driver side)
conditionVoltage (V)
(Approx.) (+)
(–)
Intelligent Key
unit connectorTerminal
M32 26 GroundLocked Battery voltage
Unlocked 0
PIIB6338E

BL-104
INTELLIGENT KEY SYSTEM
Revision: 2007 April2007 M35/M45
2. CHECK UNLOCK SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.
3. Check continuity between Intelligent Key unit connector and front door lock assembly (driver side) con-
nector.
4. Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between Intelligent Key unit and front door lock assembly (driver side).
3. CHECK UNLOCK SENSOR GROUND CIRCUIT
Check continuity between front door lock assembly (driver side) connector and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
1. Connect Intelligent Key unit harness connector.
2. Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Replace front door lock assembly (driver side).
NG >> Replace Intelligent Key unit.
AB
Continuity
Intelligent Key
unit connectorTe r m i n a l Front door lock
assembly (driver
side) connectorTerminal
M32 26 D14 3 Yes
A
GroundContinuity
Intelligent Key unit
connectorTerminal
M32 26 No
PIIB6339E
Front door lock
assembly (driver side)
connectorTerminal
GroundContinuity
D14 4 Yes
PIIB8992E
Terminals
Voltage (V)
(Approx.) (+)
(–)
Intelligent Key unit
connectorTerminal
M32 26 Ground Battery voltage
PIIB6338E