2004 INFINITI FX35 wiring

SRS-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
H RESTRAINTS
CONTENTS
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SECTION SRS
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SRS
Revision: 2004 November 2004 FX35/FX45
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
Wiring Diagrams and Trouble Diagnosis .................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 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
TROUBLE DIAGNOSIS .............................................. 7
Trouble Diagnosis Introduction ................................. 7
DIAGNOSIS FUNCTION ....................................... 7
HOW TO PERFORM TROUBLE DIAGNOSIS
FOR QUICK AND ACCURATE REPAIR ............... 7
WORK FLOW ........................................................ 8
Component Parts Location ....................................... 9
Schematic .............................................................. 10
Wiring Diagram — SRS — ...................................... 11
CONSULT-II Function ............................................ 15
DIAGNOSIS MODE FOR CONSULT-II ............... 15
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITH CONSULT-II .............................................. 15
HOW TO ERASE SELF-DIAGNOSTIC
RESULTS ............................................................ 16
Self-Diagnosis Function (Without CONSULT-II) ..... 16
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITHOUT CONSULT-II ...................................... 16
HOW TO ERASE SELF-DIAGNOSIS RESULTS ... 16
SRS Operation Check ............................................ 17
DIAGNOSTIC PROCEDURE 1 ........................... 17
Trouble Diagnosis with CONSULT-II ...................... 19
DIAGNOSTIC PROCEDURE 2 ........................... 19
DIAGNOSTIC PROCEDURE 3 ........................... 23
DIAGNOSTIC PROCEDURE 4 (CONTINUED FROM DIAGNOSTIC PROCEDURE 2) .............. 25
DIAGNOSTIC PROCEDURE 5 ........................... 25
Trouble Diagnosis without CONSULT-II ................. 29
DIAGNOSTIC PROCEDURE 6 ........................... 29
WARNING LAMP FLASH CODE CHART ........... 30
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn OFF ......................................................... 34
DIAGNOSTIC PROCEDURE 7 ........................... 34
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn ON ........................................................... 35
DIAGNOSTIC PROCEDURE 8 ........................... 35
DRIVER AIR BAG MODULE .................................... 36
Removal and Installation ........................................ 36
REMOVAL ........................................................... 36
INSTALLATION ................................................... 37
SPIRAL CABLE ........................................................ 38
Removal and Installation ........................................ 38
REMOVAL ........................................................... 38
INSTALLATION ................................................... 39
FRONT PASSENGER AIR BAG MODULE .............. 40
Removal and Installation ........................................ 40
REMOVAL ........................................................... 40
INSTALLATION ................................................... 40
FRONT SIDE AIR BAG MODULE ............................ 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSTALLATION ................................................... 42
SIDE CURTAIN AIR BAG MODULE ........................ 43
Removal and Installation ........................................ 43
REMOVAL ........................................................... 43
INSTALLATION ................................................... 44
CRASH ZONE SENSOR ........................................... 45
Removal and Installation ........................................ 45
REMOVAL ........................................................... 45
INSTALLATION ................................................... 45
SIDE AIR BAG (SATELLITE) SENSOR ................... 46
Removal and Installation ........................................ 46
REMOVAL ........................................................... 46
INSTALLATION ................................................... 46

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
AHS000HB
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” ServiceAHS000HC

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.
Wiring Diagrams and Trouble DiagnosisAHS000HE
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams" in GI section

PG-3, "POWER SUPPLY ROUTING CIRCUIT" in PG section
When you perform trouble diagnosis, refer to the following:

GI-11, "How to Follow Trouble Diagnoses" in GI section

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
Check for any service bulletins before servicing the vehicle.

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionAHS000HL
CAUTION:

Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Do not repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a
new one.

Keep ground portion clean.
DIAGNOSIS FUNCTION
The SRS self-diagnostic results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSIS FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information from Customer
WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Preliminary Check
Make sure the following parts are in good order.

Battery (Refer to SC-4, "How to Handle Battery" .)

Fuse (Refer to SRS-11, "Wiring Diagram — SRS —" .)

System component-to-harness connections
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — SRS —AHS000HO
THWM0036E

SRS-20
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
7. Diagnostic code is displayed on “SELF-DIAG [CURRENT]”.
If no malfunction is detected on “SELF-DIAG [CURRENT]” even
though malfunction is detected in “SRS Operation Check”, check the
battery voltage. If the battery voltage is less than 9V, charge or
replace the battery. Then go to SRS-23, "
DIAGNOSTIC PROCE-
DURE 3" . If the battery voltage is OK, go to SRS-25, "DIAGNOSTIC
PROCEDURE 4 (CONTINUED FROM DIAGNOSTIC PROCEDURE
2)" to diagnose the following cases:

Self-diagnostic result “SELF-DIAG [PAST]” (previously stored in
the memory) might not be erased after repair.

The SRS system malfunctions intermittently.
CONSULT-II Diagnostic Code Chart (“SELF-DIAG [CURRENT]”)
SHIA0203E
SRS701
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 9 V)
Go to SRS-23, "DIAGNOSTIC PRO-
CEDURE 3" after charging the bat-
tery.

Self-diagnostic result “SELF-DIAG
[PAST]” (previously stored in the
memory) might not be erased after
repair.

Intermittent malfunction has been
detected in the past.

Go to SRS-25, "DIAGNOSTIC PRO-
CEDURE 4 (CONTINUED FROM
DIAGNOSTIC PROCEDURE 2)" .

Go to SRS-25, "DIAGNOSTIC PRO-
CEDURE 5" .

No malfunction is detected. —
DRIVER AIR BAG
MODULE
[OPEN]

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. Replace the driver air bag module.
(Before disposal, it must be
deployed.)
4. Replace the spiral cable.
5. Replace the diagnosis sensor unit.
6. Replace the related harness. DRIVER AIR BAG
MODULE
[VB-SHORT]

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

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

Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]

Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front passenger air bag
module. (Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[VB-SHORT]

Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]

Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]

Front passenger air bag module circuit is shorted between lines.

TROUBLE DIAGNOSIS
SRS-21
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CRASH ZONE SEN
[UNIT FAIL]
CRASH ZONE SEN
[COMM FAIL]
Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the crash zone sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE LH
[OPEN]

Front LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front LH seatback
assembly (front LH side air bag
module).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]

Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]

Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]

Front LH side air bag module circuit is shorted between lines.
SIDE MODULE RH
[OPEN]

Front RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front RH seatback
assembly (front RH side air bag
module).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]

Front RH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE RH
[GND-SHORT]

Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]

Front RH side air bag module circuit is shorted between lines.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]

LH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the LH side air bag (Satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]

RH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the RH side air bag (Satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-22
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
NOTE:

Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunc-
tion 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.
PRE-TEN FRONT LH
[OPEN]
Front LH pre-tensioner circuit is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace the front LH seat belt.
(Before disposal, it must be acti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]

Front LH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT LH
[GND-SHORT]

Front LH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT LH
[SHORT]

Front LH pre-tensioner circuit is shorted between lines.
PRE-TEN FRONT RH
[OPEN]

Front RH pre-tensioner circuit is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace the front RH seat belt.
(Before disposal, it must be acti-
vated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]

Front RH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT RH
[GND-SHORT]

Front RH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT RH
[SHORT]

Front RH pre-tensioner circuit is shorted between lines.
CURTAIN MODULE LH
[OPEN]

LH side curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the LH side curtain air bag
module.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]

LH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE LH
[GND-SHORT]

LH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE LH
[SHORT]

LH side curtain air bag module circuit is shorted between lines.
CURTAIN MODULE RH
[OPEN]

RH side curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the RH side curtain air bag
module.
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]

RH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE RH
[GND-SHORT]

RH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE RH
[SHORT]

RH side curtain air bag module circuit is shorted between lines.
CONTROL UNIT

Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
self-diagnostic result. For replacement procedure of component parts, refer to the Removal and Installa-
tion procedure for the appropriate component.
15. Go to SRS-23, "
DIAGNOSTIC PROCEDURE 3" , for final inspection.
CONSULT-II Diagnostic Code Chart (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
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 9 V)
Go to SRS-23, "DIAGNOSTIC PRO-
CEDURE 3" .

No malfunction is detected.
Go to SRS-23, "DIAGNOSTIC PRO-
CEDURE 3" .
DRIVER AIR BAG
MODULE
[OPEN]

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
(Before disposal, it must be
deployed.), diagnosis sensor unit
and spiral cable. DRIVER AIR BAG
MODULE
[VB-SHORT]

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

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

Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]

Front passenger air bag module circuit is open. 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 the diagnosis sensor unit
and front passenger air bag module
(Before disposal, it must be
deployed.). ASSIST A/B MODULE
[VB-SHORT]

Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]

Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]

Front passenger air bag module circuit is shorted between lines.
CRASH ZONE SEN
[UNIT FAIL]
CRASH ZONE SEN
[COMM FAIL]

Crash zone sensor 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 crash zone sensor and diag-
nosis sensor unit.
SIDE MODULE LH
[OPEN]

Front LH side air bag module circuit is open. 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 the diagnosis sensor unit
and LH side air bag module. (Before
disposal, it must be deployed.). SIDE MODULE LH
[VB-SHORT]

Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]

Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]

Front LH side air bag module circuit is shorted between lines.