warning INFINITI FX35 2004 Service Manual

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: 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
SRS-3
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2004 November 2004 FX35/FX45
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
SRS-7
C
D
E
F
G
I
J
K
L
MA
B
SRS
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
SRS-15
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2004 November 2004 FX35/FX45
CONSULT-II FunctionAHS000HP
DIAGNOSIS MODE FOR CONSULT-II

“SELF-DIAG [CURRENT]”
A current self-diagnostic results (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.

“SELF-DIAG [PAST]”
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.

“TROUBLE DIAG RECORD”
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.

“ECU DISCRIMINATED NO.”
The diagnosis sensor unit for each vehicle model is assigned
with its own, individual classification number. This number will
be displayed on the CONSULT-II screen, as shown. When
replacing the diagnosis sensor unit, refer to the part number for
the compatibility. After installation, replacement with a correct
unit can be checked by confirming this classification number on
the CONSULT-II screen.
After repair, make sure the discriminated number of diagnosis
sensor unit installed to vehicle are same. Refer to SRS-48,
"ECU DISCRIMINATED NO." .
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears, then diagnosis mode automatically changes to User mode.
PHIA0218E
SRS803
SRS804

SRS-16
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
HOW TO ERASE SELF-DIAGNOSTIC RESULTS

“SELF-DIAG [CURRENT]”
A current self-diagnostic result is displayed on the CONSULT-II screen in real time.
After the malfunction is repaired completely, no malfunction is detected on “SELF-DIAG [CURRENT]”.

“SELF-DIAG [PAST]”
Return to the “SELF-DIAG [CURRENT]” CONSULT-II screen by touching “BACK” key of CONSULT-II and
select “SELF-DIAG [CURRENT]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-DIAG [CURRENT]”
mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is not erased, the User mode shows the system
malfunction by the operation of the warning lamp even if the malfunction is repaired completely.

“TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Self-Diagnosis Function (Without CONSULT-II)AHS000HQ

The reading of these results is accomplished “User mode” and “Diagnosis mode”.

After a malfunction is repaired, turn ignition switch ON. Diagnosis mode returns to the User mode. At that
time, the self-diagnostic result is cleared.
HOW TO CHANGE SELF-DIAGNOSIS MODE WITHOUT CONSULT-II
HOW TO ERASE SELF-DIAGNOSIS RESULTS
After a malfunction is repaired, turn ignition switch OFF for at least one second, then back ON. Diagnosis
mode returns to the User mode. At that time, the self-diagnostic result is cleared.
SRS701
PHIA0709E

TROUBLE DIAGNOSIS
SRS-17
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2004 November 2004 FX35/FX45
SRS Operation CheckAHS000HR
DIAGNOSTIC PROCEDURE 1
Checking Air Bag Operation by Using “AIR BAG” Warning Lamp — User Mode
1. Turn ignition switch from OFF to ON, and make sure that the air bag warning lamp blinks.
2. Compare the SRS air bag warning lamp blinking pattern with the
examples.
BF-1845D

SRS-18
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Warning lamp examples
“AIR BAG” warning lamp operation — User mode
—SRS condition Reference item

No malfunction is detected.

No further action is necessary.—

The system is malfunctioning and
needs to be repaired as indicated.Go to SRS-19, "DIAGNOSTIC
PROCEDURE 2" or SRS-25,
"DIAGNOSTIC PROCEDURE 5" .

Air bag is deployed.

Seat belt pre-tensioner is deployed.Go to SRS-56, "
COLLISION DIAG-
NOSIS" .

Diagnosis sensor unit is malfunction-
ing.

Air bag power supply circuit is mal-
functioning.

SRS air bag warning lamp circuit is
malfunctioning.Go to SRS-34, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn OFF" .

Diagnosis sensor unit is malfunction-
ing.

Air bag warning lamp circuit is mal-
functioning.Go to SRS-35, "
Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
Turn ON" .
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E

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.

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”

SRS-24
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
7. If no malfunction is detected on “SELF-DIAG [CURRENT]”,
repair of SRS is completed. Go to step 8.
If any malfunction is detected on “SELF-DIAG [CURRENT]”, the
malfunctioning part is not repaired completely or another mal-
functioning part is detected. Go to SRS-19, "
DIAGNOSTIC
PROCEDURE 2" , and repair malfunctioning part completely.
8. Touch “ERASE”.
NOTE:
Touch “ERASE” to clear the memory of the malfunction (“SELF-
DIAG [PAST]”).
If the memory of the malfunction in “SELF-DIAG [PAST]” is not
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is repaired
completely.
9. Touch “BACK” key of CONSULT-II to “SELECT DIAG MODE”
screen. Touch “SELF-DIAG [PAST]”.
10. Make sure no malfunction is detected on “SELF-DIAG [PAST]”.
11. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears in order to return to User mode from Diagnosis mode.
12. Turn ignition switch OFF then turn off and disconnect CON-
SULT-II.
13. Go to SRS-17, "
DIAGNOSTIC PROCEDURE 1" .
SRS701
SRS773
SRS697
SRS702