2007 INFINITI M35 parts

TROUBLE DIAGNOSIS
SRS-11
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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 *

SRS-26
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is
eliminated using air bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still
observed, proceed to the next step. When malfunction is eliminated, further repair work is not required.
BELT TENSION SENS
[UNIT FAIL]
[B1019]
Belt tension sensor circuit between belt tension sensor and
occupant classification system control unit, or diagnosis sensor
unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front seat belt (passenger
side) assembly.
4. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
PASS A/B INDCTR
CKT
[B1023]

Front passenger air bag off indicator or related circuit is mal-
functioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag off
indicator (The installation position is
an overhead consoul).
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
FRONTAL COLLISION
DETECTION
[B1209]

Seat belt pre-tensioner and front air bag are deployed.
Go to SRS-54, "For Frontal Colli-
sion" .
SIDE COLLISION
DETECTION
[B1210]

Side and curtain air bag is deployed.
Go to SRS-56, "For Side Collision" . Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-30
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previously
erased by a reset operation can be displayed.
4. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
5. Touch “PRINT”.
6. Compare diagnostic codes to SRS-30, "
DTC No. Index (“SELF-
DIAG [PAST]” or “TROUBLE DIAG RECORD”)" .
7. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
8. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
9. Repair the system as outlined by the “Repair order” in “Intermit-
tent Malfunction Diagnostic Code Chart”, that corresponds to the
self-diagnosis result. For replacement procedure of component
parts, refer to the Removal and Installation procedure for the appropriate component.
10. Go to SRS-27, "
DIAGNOSTIC PROCEDURE 3" , for final checking.
DTC No. Index (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
SRS697
SHIA0182E
Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”
NO DTC IS
DETECTED.When malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.

Low battery voltage (Less than 9V)
Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .

No malfunction is detected.
Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .
DRIVER AIRBAG
MODULE
[OPEN]
[B1049] [B1054]

Driver air bag module circuit is open (including the spiral cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace driver air bag module, diag-
nosis sensor unit and spiral cable. DRIVER AIRBAG
MODULE
[VB-SHORT]
[B1050] [B1055]

Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
[B1051] [B1056]

Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
[B1052] [B1057]

Driver air bag module circuit is shorted between lines.

TROUBLE DIAGNOSIS
SRS-35
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SRS
Revision: 2007 April2007 M35/M45
Trouble Diagnosis without CONSULT-IINHS00098
DIAGNOSTIC PROCEDURE 6
Inspecting SRS Malfunctioning Parts by Using “AIR BAG” Warning Lamp — Diagnosis Mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is detected in User mode.
1. Turn ignition switch ON.
2. After “AIR BAG” warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
3. Wait more than 3 seconds.
4. Repeat the steps 1 to 3 twice. (Perform three times in all.)
5. Turn ignition switch ON.
SRS is now in Diagnosis mode.
“AIR BAG” warning lamp operates in Diagnosis mode as follows:
WARNING LAMP FLASH CODE CHART
PHIA0532E
PHIA1233E
SHIA0028E

SRS-56
COLLISION DIAGNOSIS
Revision: 2007 April2007 M35/M45
For Side CollisionNHS0009M
WHEN THE SIDE AIR BAG IS ACTIVATED IN THE SIDE COLLISION:
1. Replace the following components:
–All parts of front seatback (including front seatback frame) with front side air bag module (on the side on
which front side air bag is activated)
–Curtain air bag module (on the side on which side curtain air bag is activated)
–Diagnosis sensor unit
–Satellite sensor (on the side on which side air bag and side curtain air bag is activated)
2. Check the SRS components and the related parts using the following table.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-20, "
SRS Operation
Check" . Ensure entire SRS operates properly.
WHEN SRS IS NOT ACTIVATED IN THE SIDE COLLISION:
1. Check the SRS components and the related parts using the following table.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
2. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-20, "
SRS Operation
Check" . Ensure entire SRS operates properly.
SRS INSPECTION (FOR SIDE COLLISION)
PartFront side air bag and
side curtain air bag is
activatedFront side air bag and side curtain air bag is NOT activated
LH or RH side curtain
air bag moduleREPLACE the side
curtain air bag mod-
ule.
(Repair the center pil-
lar inner, etc. before
installing new one if
damaged.)1. Check for visible signs of damage (dents, tears, deformation) of the center pillar on
the collision side.
2. If damaged— Remove the LH or RH side curtain air bag module.
3. Check for visible signs of damaged (tears etc.) of the LH or RH side curtain air bag
module.
4. Check harness and connectors for damage, and terminals for deformities.
5. If no damage is found, reinstall the LH or RH side curtain air bag module with new
bolts.
6. If damaged—REPLACE the LH or RH side curtain air bag module with new bolts.
Front LH or RH side
air bag moduleREPLACE all parts of
seatback with
deployed front side
air bag module.1. Check for visible signs of damage (dents, tears, deformation) of the seatback on
the collision side.
2. Check harness and connectors for damage, and terminals for deformities.
3. If damaged—REPLACE the front seatback assembly.
LH or RH side air bag
(Satellite) sensorREPLACE the side
air bag (Satellite) sen-
sor on the collision
side with new nuts.
(Repair the center pil-
lar inner, etc. before
installing new one if
damaged.)1. Remove the LH or RH side air bag (Satellite) sensor on the collision side. Check
harness connectors for damage, terminals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the LH or RH
side air bag (Satellite) sensor.
3. Install the LH or RH side air bag (Satellite) sensor to check fit.
4. If no damage is found, reinstall the LH or RH side sir bag (Satellite) sensor with
new nuts.
5. If damaged—REPLACE the LH or RH side air bag (Satellite) sensor with new nuts.
Diagnosis sensor unit REPLACE the diag-
nosis sensor unit with
the new bolts.1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall the diagnosis sensor unit with new bolts and ground
bolt.
4. If damaged—REPLACE the diagnosis sensor unit with new bolts and ground bolt.

COLLISION DIAGNOSIS
SRS-57
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SRS
Revision: 2007 April2007 M35/M45
Seat belt pre-ten-
sioner assembly1. Check if the seat belt can be extended smoothly.
If the seat belt cannot be extended smoothly,
–Check for deformities of the center pillar inner.
–If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
2. Remove the seat belt pre-tensioner assembly on the collision side. Check harness cover and connectors
for damage, terminals for deformities, and harness for binding.
3. Check for visible signs of damage (dents, cracks, deformation) of the seat belt pre-tensioner assembly.
4. Check seat belt adjuster for damage.
5. If no damage is found, reinstall the seat belt pre-tensioner assembly.
6. If damaged—REPLACE the seat belt pre-tensioner assembly with new bolts.
Seat with front side
air bagREPLACE all parts of
front seatback
(including front seat-
back frame)1. Visually check the seat on the collision side.
2. Remove the seat on the collision side and check the following for damage and
deformities.
–Harness, connectors and terminals
–Frame and recliner (for front and rear seat), and also adjuster and slides (for front
seat)
3. If no damage is found, reinstall the seat.
4. If damaged—REPLACE the damaged seat parts using new bolts.
Center inner pillar 1. Check the center inner pillar on the collision side for damage (dents, cracks, deformation).
2. If damaged—REPAIR the center inner pillar.
Trim/headlining 1. Check for visible signs of damage (dents, cracks, deformation) of the interior trim on the collision side.
2. If damaged—REPLACE the damaged trim parts. PartFront side air bag and
side curtain air bag is
activatedFront side air bag and side curtain air bag is NOT activated

STC-1
STEERING CONTROL SYSTEM
G STEERING
CONTENTS
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SECTION STC
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STC
Revision: 2007 April2007 M35/M45
STEERING CONTROL SYSTEM
EPS
SYSTEM DESCRIPTION ............................................ 3
Components ............................................................. 3
Components (Models with Rear Active Steer) ......... 3
Electronically Controlled Power Steering System
Function ................................................................... 3
Fail-Safe Function .................................................... 4
FAIL-SAFE INPUT/CANCEL CONDITIONS ......... 4
TROUBLE DIAGNOSIS .............................................. 5
How to Perform Trouble Diagnosis .......................... 5
BASIC CONCEPT ................................................. 5
Component Parts Location ....................................... 5
Wiring Diagram — EPS — ....................................... 6
Control Unit Input/Output Signal Standard ............... 8
STANDARD BY CIRCUIT TESTER AND OSCIL-
LOSCOPE ............................................................. 8
For Fast and Accurate Trouble Diagnosis ................ 9
Basic Inspection ....................................................... 9
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY .......................................... 9
Inspection: Power Steering Control Unit Power Sup-
ply Circuit and Ground ............................................. 9
Symptom: The Steering Force Does Not Change
Smoothly According to the Vehicle Speed ............. 10
RAS
REAR ACTIVE STEER ............................................. 13
Removal and Installation ........................................ 13
COMPONENTS .................................................. 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 13
Disassembly and Assembly ................................... 14
COMPONENTS .................................................. 14
DISASSEMBLY ................................................... 14
INSPECTION AFTER DISASSEMBLY ............... 14
ASSEMBLY ......................................................... 14
Neutral Position Adjustment ................................... 14
SYSTEM DESCRIPTION .......................................... 16
Components ........................................................... 16RAS (Rear Active Steer) Function .......................... 16
Fail-Safe Function .................................................. 17
TROUBLE DIAGNOSIS ............................................ 18
How to Perform Trouble Diagnosis ......................... 18
BASIC CONCEPT ............................................... 18
Component Parts Location ..................................... 19
Schematic ............................................................... 20
Wiring Diagram — RAS — ..................................... 21
Control Unit Input/Output Signal Standard ............. 26
CIRCUIT TESTER REFERENCE VALUE ........... 26
STANDARD BY CONSULT-II .............................. 27
CONSULT-II Function (RAS/HICAS) ...................... 27
FUNCTION .......................................................... 27
CONSULT-II SETTING PROCEDURE ................ 28
SELF-DIAG RESULT MODE ............................... 28
DATA MONITOR MODE ...................................... 30
ACTIVE TEST MODE ......................................... 30
RAS CONTROL UNIT PART NUMBER .............. 30
Diagnosis Procedure with Self-Diagnosis Function
(Without CONSULT-II) ............................................ 31
DESCRIPTION .................................................... 31
SELF-DIAGNOSIS PROCEDURE ...................... 31
SELF-DIAGNOSIS DISPLAY .............................. 31
SELF-DIAGNOSIS DISPLAY ITEMS .................. 31
HOW TO ERASE SELF-DIAGNOSIS ................. 31
CAN Communication .............................................. 31
For Fast and Accurate Trouble Diagnosis .............. 32
Basic Inspection ..................................................... 32
BASIC INSPECTION 1: POWER SUPPLY CIR-
CUIT TERMINAL LOOSENESS AND BATTERY ... 32
BASIC INSPECTION 2: RAS WARNING LAMP
INSPECTION ...................................................... 32
BASIC INSPECTION 3: RAS CONTROL UNIT
POWER SUPPLY CIRCUIT AND GROUND CIR-
CUIT INSPECTION ............................................. 32
Trouble Diagnosis Chart ......................................... 33
SELF-DIAGNOSIS .............................................. 33
DIAGNOSIS CHART BY SYMPTOM .................. 34
Inspection 1: RAS Control Unit Malfunction ........... 35
Inspection 2: Motor Power Supply System ............. 35

TROUBLE DIAGNOSIS
STC-5
[EPS]
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STC
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble DiagnosisNGS000DX
BASIC CONCEPT

The most important point to perform trouble diagnosis is to understand systems (control and mechanism)
in vehicle thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
they will be necessary to check symptom by driving vehicle with
customer.
CAUTION:
Customers are not professionals. Do not assume “maybe
customer means...” or “maybe customer mentioned this
symptom”.

It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.

Always read “GI General Information” to confirm general precau-
tions. Refer to GI-4, "
General Precautions" .
Component Parts LocationNGS000DY
SEF234G
SEF233G
1. Power steering control unit
(Back of center console assembly)2. Power steering solenoid valve
SGIA1105J