Infiniti QX4 (R50). Manual — part 537
Trouble Diagnoses: “AIR BAG” Warning Lamp
Does Not Turn Off
=NBRS0047
DIAGNOSTIC PROCEDURE 9
NBRS0047S01
1
SEE THE DEPLOYMENT OF AIR BAG MODULE
Is air bag module deployed?
Yes or No
Yes
©
Refer to COLLISION DIAGNOSIS (RS-59).
No
©
GO TO 2.
2
CHECK AIR BAG FUSE
Is SRS “Air Bag” fuse OK?
SRS577
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
3
CHECK AIR BAG FUSE AGAIN
Replace “AIR BAG” fuse and turn ignition switch ON.
Is “AIR BAG” fuse blown again?
Yes
©
Repair main harness and/or replace air bag harness.
No
©
INSPECTION END
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn Off
RS-56
4
CHECK DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
I
Is “AIR BAG” displayed on CONSULT-II?
SRS771
Yes or No
Yes
©
GO TO 5.
No
©
Visually check the wiring harness connection of diagnosis sensor unit. If the harness
connection check result is OK, replace diagnosis sensor unit.
5
CHECK HARNESS CONNECTION
Is harness connection between warning lamp and diagnosis sensor unit OK?
OK or NG
OK
©
Replace diagnosis sensor unit.
NG
©
Connect “AIR BAG” warning lamp and diagnosis sensor unit connector properly. If “AIR
BAG” warning lamp still does not go off, replace harness.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn Off (Cont’d)
RS-57
Trouble Diagnoses: “AIR BAG” Warning Lamp
Does Not Turn On
=NBRS0048
DIAGNOSTIC PROCEDURE 10
NBRS0048S01
1
CHECK “METER” FUSE
Is meter fuse OK?
SRS852
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
CHECK “METER” FUSE AGAIN
Replace meter fuse and turn ignition switch ON.
Is meter fuse blown again?
Yes
©
Repair main harness.
No
©
INSPECTION END
3
CHECK “AIR BAG” WARNING LAMP LED
Is “AIR BAG” warning lamp LED OK?
OK or NG
OK
©
GO TO 4.
NG
©
Replace “AIR BAG” warning lamp LED.
4
CHECK HARNESS CONNECTION BETWEEN DIAGNOSIS SENSOR UNIT AND “AIR BAG” WARNING
LAMP
Disconnect diagnosis sensor unit connector and turn ignition switch “ON”.
I
Does “AIR BAG” warning lamp turn on?
Yes or No
Yes
©
Replace diagnosis sensor unit.
No
©
Check the ground circuit of “AIR BAG” warning lamp.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn On
RS-58
Collision Diagnosis
=NBRS0049
FOR FRONTAL COLLISION
NBRS0049S01
To repair the SRS, perform the following steps.
When SRS (except the side air bag) is activated in a collision:
1) Replace the diagnosis sensor unit.
2) Remove the air bag modules (except the side air bag module) and seat belt pre-tensioner assemblies.
3) Check the SRS components using the table shown below:
I
Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
4) Install new air bag modules (except the side air bag module) and seat belt pre-tensioner assemblies.
5) Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to “SRS Operation Check”
for details (RS-38). Ensure entire SRS operation properly.
When SRS is not activated in a collision:
1) Check the SRS components using the table shown below:
I
Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
2) Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to “SRS Operation Check”
for details (RS-38). Ensure entire SRS operation properly.
SRS Inspection (For frontal collision)
NBRS0049S0101
Part
SRS is activated
SRS is NOT activated
Air bag module (driver
and passenger side)
REPLACE
Install with new bolts.
1. Remove air bag module. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
2.
a. Install driver air bag module into the steering wheel to check fit and alignment
with the wheel.
b. Install passenger air bag module into the instrument panel to check fit with the
instrument panel.
3. No damage found, reinstall with new bolts.
4. If damaged—REPLACE. Install air bag modules with new bolts. Air bag must
be deployed before discarding.
Seat belt pre-ten-
sioner assembly
REPLACE
Install seat belt pre-
tensioner with new
bolts.
1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities,
and harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. If no damage is found, reinstall seat belt pre-tensioner assembly.
5. If damaged—REPLACE. Install the seat belt pre-tensioners with new bolts
coated with bonding agent. Seat belt pre-tensioners must be deployed before
discarding.
Diagnosis sensor unit
REPLACE
Install with new bolts
coated with bonding
agent.
1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new special bolts and ground bolt coated
with bonding agent.
4. If damaged—REPLACE. Install diagnosis sensor unit with new special bolts
and ground bolt coated with bonding agent.
Steering wheel
1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install air bag module to check fit or alignment with steering wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall with bolts.
6. If damaged—REPLACE.
Spiral cable
1. Visually check spiral cable and combination switch for damage.
2. Check connectors and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall with bolts.
5. If damaged—REPLACE.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
BT
HA
SC
EL
IDX
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Collision Diagnosis
RS-59
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