sensor INFINITI M35 2007 Factory Service Manual

CLIMATE CONTROLLED SEAT
SE-139
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
2. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.
3. Check continuity between climate controlled seat control unit
connector and seat cushion thermal electric device connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between climate controlled seat control unit and seat cushion thermal
electric device.
3. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR
Check resistance between seat cushion thermal electric device con-
nector.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace seat cushion thermal electric device.
AB
Continuity Climate
controlled seat
control unit
connectorTerminalSeat cushion
thermal electric
device connectorTerminal
B283
(driver side)
B293
(passenger side)21 B285
(driver side)
B295
(passenger side)2
Ye s
22 1
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)21
No
22
PIIB6085E
Seat cushion thermal
electric device connectorTe r m i n a l Resistance (KΩ)
(Approx.)
B220
(driver side)
B258
(passenger side)12 2
PIIB6086E

SE-140
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
Check Seatback Thermal Electric Device Sensor Circuit NIS0027X
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK >> Climate controlled seat control unit circuit is OK.
NG >> GO TO 2.
2. CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connector and seatback thermal electric device connector.
3. Check continuity between climate controlled seat control unit
connector and seatback thermal electric device connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between climate seat control unit and seatback thermal electric device.
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled seat
control unit
connectorTerminal
B283
(driver side)
B293
(passenger side)23 GroundBlower motor
operated0.5 - 4
PIIB6087E
AB
Continuity Climate
controlled seat
control unit
connectorTe r m i n a lSeatback thermal
electric device
connectorTerminal
B283
(driver side)
B293
(passenger side)23 B220
(driver side)
B258
(passenger side)1
Ye s
24 2
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)23
No
24
PIIB6088E

CLIMATE CONTROLLED SEAT
SE-141
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
3. CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR
Check resistance between seatback thermal electric device connec-
tor.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace seatback thermal electric device.
Check Climate Controlled Seat Blower Motor CircuitNIS0027Y
1. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR CIRCUIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit and climate controlled seat blower motor connector.
3. Check continuity between climate controlled seat control unit
connector and climate controlled seat blower motor connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between climate controlled seat control unit and climate controlled seat
blower motor.
Seatback thermal electric
device connectorTerminal Resistance
(KΩ)
(Approx.)
B220
(driver side)
B258
(passenger side)12 2
PIIB6086E
AB
Continuity Climate
controlled seat
control unit
connectorTerminalClimate controlled
seat blower motor
connectorTerminal
B283
(driver side)
B293
(passenger side)7
B282
(driver side)
B292
(passenger side)3
Ye s 14 2
17 4
18 1
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283
(driver side)
B293
(passenger side)7
No 14
17
18
PIIB6089E

SRS-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
H RESTRAINTS
CONTENTS
C
D
E
F
G
I
J
K
L
M
SECTION SRS
A
B
SRS
Revision: 2007 April2007 M35/M45
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for SRS “AIR BAG” and “SEAT BELT
PRE-TENSIONER” Service ..................................... 3
Occupant Classification System Precaution ............ 3
PREPARATION ........................................................... 4
Commercial Service Tools ........................................ 4
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ....... 5
SRS Configuration ................................................... 5
Front Seat Belt Pre-Tensioner with Load Limiter ...... 6
Front Side Air Bag .................................................... 6
Side Curtain Air Bag ................................................. 6
Occupant Classification System (OCS) ................... 7
Passenger Air Bag Status Condition ........................ 7
Component Parts of Occupant Classification Sys-
tem ........................................................................... 7
Passenger Seatbelt Warning System ....................... 8
SYSTEM DESCRIPTION ...................................... 8
TROUBLE DIAGNOSIS .............................................. 9
Trouble Diagnosis Introduction ................................. 9
DIAGNOSIS FUNCTION ....................................... 9
HOW TO PERFORM TROUBLE DIAGNOSIS
FOR QUICK AND ACCURATE REPAIR ............... 9
WORK FLOW ...................................................... 10
Component Parts Location ...................................... 11
Schematic .............................................................. 12
Wiring Diagram — SRS — ..................................... 13
CONSULT-II Function ............................................ 18
DIAGNOSIS MODE FOR CONSULT-II ............... 18
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITH CONSULT-II .............................................. 18
HOW TO ERASE SELF-DIAGNOSTIC
RESULTS ............................................................ 19
Self-Diagnosis Function (Without CONSULT-II) ..... 19
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITHOUT CONSULT-II ...................................... 19
HOW TO ERASE SELF-DIAGNOSTIC
RESULTS ............................................................ 19SRS Operation Check ............................................ 20
DIAGNOSTIC PROCEDURE 1 ........................... 20
Trouble Diagnosis with CONSULT-II ...................... 22
DIAGNOSTIC PROCEDURE 2 ........................... 22
DIAGNOSTIC PROCEDURE 3 ........................... 27
DIAGNOSTIC PROCEDURE 4 (CONTINUED
FROM DIAGNOSTIC PROCEDURE 2) .............. 29
DIAGNOSTIC PROCEDURE 5 ........................... 29
Trouble Diagnosis without CONSULT-II ................. 35
DIAGNOSTIC PROCEDURE 6 ........................... 35
WARNING LAMP FLASH CODE CHART ........... 35
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn OFF ......................................................... 39
DIAGNOSTIC PROCEDURE 7 ........................... 39
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn ON ........................................................... 40
DIAGNOSTIC PROCEDURE 8 ........................... 40
Trouble Diagnosis: Passenger Seatbelt Warning
System .................................................................... 41
DRIVER AIR BAG MODULE .................................... 42
Removal and Installation ........................................ 42
REMOVAL ........................................................... 42
INSTALLATION ................................................... 43
SPIRAL CABLE ........................................................ 44
Removal and Installation ........................................ 44
REMOVAL ........................................................... 44
INSTALLATION ................................................... 44
FRONT PASSENGER AIR BAG MODULE .............. 46
Removal and Installation ........................................ 46
REMOVAL ........................................................... 46
INSTALLATION ................................................... 46
SIDE CURTAIN AIR BAG MODULE ........................ 47
Removal and Installation ........................................ 47
REMOVAL ........................................................... 47
INSTALLATION ................................................... 48
CRASH ZONE SENSOR ........................................... 49
Removal and Installation ........................................ 49
REMOVAL ........................................................... 49
INSTALLATION ................................................... 49

SRS-2Revision: 2007 April2007 M35/M45 SIDE AIR BAG (SATELLITE) SENSOR ................... 50
Removal and Installation ........................................ 50
REMOVAL ........................................................... 50
INSTALLATION .................................................... 50
FRONT SEAT BELT PRE-TENSIONER ................... 51
Removal and Installation ........................................ 51
DIAGNOSIS SENSOR UNIT ..................................... 52
Removal and Installation ........................................ 52
REMOVAL ........................................................... 52
INSTALLATION .................................................... 52
ECU DISCRIMINATED NO. ................................. 52
OCCUPANT CLASSIFICATION SYSTEM CON-TROL UNIT ................................................................ 53
Removal and Installation ......................................... 53
COLLISION DIAGNOSIS .......................................... 54
For Frontal Collision ................................................ 54
SRS INSPECTION (FOR FRONTAL COLLI-
SION) ................................................................... 54
For Side Collision .................................................... 56
WHEN THE SIDE AIR BAG IS ACTIVATED IN
THE SIDE COLLISION: ....................................... 56
WHEN SRS IS NOT ACTIVATED IN THE SIDE
COLLISION: ......................................................... 56
SRS INSPECTION (FOR SIDE COLLISION) ...... 56

PRECAUTIONS
SRS-3
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NHS0008O
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceNHS0008P

Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.

Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.

Diagnosis sensor unit must always be installed with their arrow marks “⇐” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before instal-
lation and replace as required.

The spiral cable must be aligned with the neutral position since its rotations are limited. Do not turn steer-
ing wheel and column after removal of steering gear.

Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and seat mounted front side air bag module standing with the stud bolt side facing
down.

Conduct self-diagnosis to check entire SRS for proper function after replacing any components.

After air bag inflates, the front instrument panel assembly should be replaced if damaged.

Always replace instrument panel pad following front passenger air bag deployment.
Occupant Classification System PrecautionNHS0008Q
Replace occupant classification system control unit and passenger front seat cushion as an assembly.
Refer to SE-166, "
Passenger's Seat Components" .

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-5
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)PFP:28556
SRS ConfigurationNHS0008S
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ON or START posi-
tion.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal col-
lision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows;
PHIA1120E
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module×——
Front passenger air bag module×——
Front LH seat belt pre-tensioner×——
Front RH seat belt pre-tensioner×——
Front LH side air bag module —×—
Front RH side air bag module — —×
LH side curtain air bag module —×—
RH side curtain air bag module — —×

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-7
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
Occupant Classification System (OCS) NHS0008W
The occupant classification system identifies different size occupants, out of position occupants, and detects if
child seat is present in the front passenger seat. The occupant classification system receives inputs from the
occupant classification sensor (located inside the passenger seat cushion assembly) and belt tension sensor
(part of the passenger front seat belt assembly and located at the belt anchor location). Depending on classifi-
cation of passenger, the occupant classification system sends a signal to the diagnosis sensor unit. The diag-
nosis sensor unit uses this signal to determine full, partial, or non deployment of passenger front air bag in the
event of a collision. Depending on the signal received, the diagnosis sensor unit can disable the passenger
front air bag completely.
NOTE:
In case of customer concern, CONSULT-ll can be used to confirm the passenger air bag status (readiness).
Passenger Air Bag Status Condition NHS0008X
NOTE:
Passenger does not meet Ocuupant Classification System specifications for passenger air bag activation.
Component Parts of Occupant Classification System NHS0008Y
Front Passenger Seat
(Condition)PASS AIR BAG OFF Indicator
(Status)Passenger Air Bag Status
(Readiness)CONSULT-ll Display
Seat occupied OFF Active (enabled) ON
seat occupiedNOTE ON Deactivated (disabled) OFF
Seat empty OFF Deactivated (disabled) OFF
PHIA1177E
1.Occupant classification system con-
trol unit2. Belt tension sensor 3. Seat pressure sensor
4. Bladder 5.Front passenger air bag OFF indica-
tor (Cutoff telltaile)

SRS-8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Revision: 2007 April2007 M35/M45
Passenger Seatbelt Warning System NHS0009R
SYSTEM DESCRIPTION
This system warns when passenger seatbelt is not fasten.
This system is composed of the following items.

Seatbelt warning lamp.

Seatbelt buckle switch (passenger side).

Air bag diagnosis sensor unit.

Occupant classification system.
Seatbelt warning lamp is used for both driver seatbelt warning and passenger seatbelt warning.
Seatbelt warning lamp turns ON when all conditions below are met.

Driver seatbelt is fastened.

Occupant is on passenger seat.

Passenger seatbelt is not fasten.

TROUBLE DIAGNOSIS
SRS-11
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
Component Parts LocationNHS00091
*: The bottom of front passenger seat
P H I A 111 0 E
1. Front passenger air bag module 2. Driver air bag module 3. Spiral cable
4. Diagnosis sensor unit 5. Side air bag (Satellite) sensor (RH/LH) 6. Front seat belt pre-tensioner (RH/LH)
7. Seat belt buckle switch (RH/LH) 8. Front side air bag modules 9. Side curtain air bag module
10. Crash zone sensor 11. Belt tension sensor 12. Belt tension sensor connector *
13. Seat pressure sensor * 14. Occupant classification system control unit *