Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
NLSC0001The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL V10 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
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 should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by intentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
Wiring Diagrams and Trouble DiagnosesNLSC0002When you read wiring diagrams, refer to the following:
+GI-11, “HOW TO READ WIRING DIAGRAMS”
+EL-10, “POWER SUPPLY ROUTING” for power distribution circuit
When you perform trouble diagnoses, refer to the following:
+GI-32, “HOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSES”
+GI-21, “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
SC-2
BatteryNLSC0014
Applied model QG engine YD22 engine
TypeYUASA type code YUASA type code
025 027 065 075 079 067 096
Capacity V-AH 12 - 52 12-55 12-50 12-42 12-60 12-64
StarterNLSC0015
Type0 001 116 006 D7E31 S114-800B S1114-871 M8T75371
BOSCH make VALEO make HITACHI make MITSUBISHI make
Non-reduction Non-reduction Reduction Reduction Reduction
Applied model QG engine SR engine YD22 engine
System voltage V12
No-loadTerminal voltage V 11.5 11.0 11.0 11.0 11.0
Current A Less than 48 45 Less than 90 Less than 90 Less than 145
Revolution rpm More than 5,800 12,000 More than 2,700 More than 2,300 More than 3,400
Minimum diameter of commutator mm
(in)33.5 (1.319) 28.2 (1,110) 28.0 (1.102) 31.4 (1.236)
Minimum length of brush mm (in) 3.5 (0.138) 6.15 (0.242) 10.5 (0.413) 11.0 (0.433)
Brush spring tension N (kg, lb)5.2 (0.53, 1.17) at
7.5 mm (0.295 in)
brush length16.2 - 19.8
(1.65 - 2.02,
3.46 - 4.45)12.7 - 17.7
(1.3 - 1.8,
2.9 - 4.0)26.5 - 36.3
(2.7 - 3.7,
6.0 - 8.2)
Clearance between bearing metal and
armature shaft mm (in)—0.05 (0.002) Less than 0.2 (0.008)—
Clearance“!”between pinion front edge
and pinion stopper mm (in)0.0 - 3.9
(0 - 0.154)Max. 1 (0.039) 0.3 - 2.5 (0.012 - 0.098)—
Movement“!”in height of pinion assem-
bly mm (in)—Max. 12.2 (0.480)—0.5 - 2.0
(0.020 - 0.079)
AlternatorNLSC0016
TypeLR180-762 LR190-747 LR1100-724 A2TB3891
HITACHI make MITSUBISHI make
Applied model QG engine SR engine YD engine SR engine
Nominal rating V-A 12-80 12-90 12-100 12-90
Ground polarityNegative
Minimum revolutions under no-load (When
13.5V is applied) rpmLess than 1,000 Less than 1,300
Hot output current (When 13.5V is applied)
A/rpmMore than 23/1,300
More than 65/2,500
More than 87/5,000More than 34/1,300
More than 83/2,500
More than 91/5,000More than 22/1,300
More than 64/2,500
More than 85/5,000
Regulated output voltage V 14.1 - 14.7
Minimum length of brush mm (in) 6.0 (0.236) 5.0 (0.197)
Brush spring pressure N (g, oz) 1.0 - 3.43 (102 - 350, 3.60 - 12.34)4.8 - 5.0
(490 - 610, 17.28 -
21.51)
Slip ring minimum diameter mm (in) 6.0 (1.024) 22.1 (0.870)
Rotor coil resistance at 20°C (68°F)Ω2.67 2.31 1.8 - 2.1
SERVICE DATA AND SPECIFICATIONS (SDS)
Battery
SC-34
STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)″AIR
BAG″and″SEAT BELT PRE-TENSIONER″...............2
Precautions for Steering System .................................2
PREPARATION...............................................................3
Special Service Tools ..................................................3
Commercial Service Tool .............................................3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................5
NVH Troubleshooting Chart.........................................5
ON-VEHICLE SERVICE..................................................6
Checking Steering Wheel Play ....................................6
Checking Neutral Position on Steering Wheel ............6
PRE-CHECKING........................................................6
CHECKING...............................................................6
Front Wheel Turning Angle ..........................................6
Checking Gear Housing Movement ............................6
Checking and Adjusting Drive Belts ............................7
Checking Steering Gear and Linkage .........................7
STEERING GEAR......................................................7
STEERING LINKAGE.................................................7
Checking Fluid Level ...................................................7
Checking Fluid Leakage ..............................................7
Bleeding Hydraulic System..........................................8
Checking Steering Wheel Turning Force ....................8
Checking Hydraulic System.........................................9
STEERING WHEEL AND STEERING COLUMN.........10
Components...............................................................10
Removal and Installation ...........................................10
STEERING WHEEL.................................................10
STEERING COLUMN............................................... 11
Disassembly and Assembly .......................................13Inspection...................................................................14
TILT MECHANISM...................................................14
POWER STEERING GEAR AND LINKAGE................15
Components...............................................................15
Removal and Installation ...........................................16
Inspection...................................................................17
STEERING GEAR....................................................18
BOOT.....................................................................18
TIE-ROD OUTER AND INNER SOCKETS..................18
Assembly ...................................................................18
Adjustment .................................................................20
POWER STEERING OIL PUMP (QG ENGINE)...........21
Components...............................................................21
Inspection...................................................................21
POWER STEERING OIL PUMP (SR ENGINE)............22
Components...............................................................22
Inspection...................................................................22
POWER STEERING OIL PUMP (YD ENGINE)............23
Components...............................................................23
Pre-disassembly Inspection .......................................23
Removal and Installation ...........................................24
Disassembly...............................................................24
Inspection...................................................................25
Assembly ...................................................................26
SERVICE DATA AND SPECIFICATIONS (SDS).........27
General Specifications ...............................................27
Steering Wheel ..........................................................27
Steering Column ........................................................27
Steering Gear and Linkage .......................................28
Power Steering ..........................................................28
Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
NLST0001The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL V10 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
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 should be per-
formed by an authorized NISSAN 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 RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
Precautions for Steering SystemNLST0003+Before disassembly, thoroughly clean the outside of the unit.
+Disassembly should be done in a clean work area. It is important to prevent the internal parts from
becoming contaminated by dirt or other foreign matter.
+Place disassembled parts in order, on a parts rack, for easier and proper assembly.
+Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
+Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
+Before assembly, apply a coat of recommended power steering fluid* to hydraulic parts. Vaseline
may be applied to O-rings and seals. Do not use any grease.
+Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: DEXRON
TMIII or equivalent. Refer to MA-20, “Fluids and Lubricants”.
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
ST-2
Special Service ToolsNLST0004
Tool number
Tool nameDescription
KV48102500
Pressure gauge adapter
NT542
Measuring oil pressure
ST27180001
Steering wheel puller
NT544
Removing steering wheel
HT72520000
Ball joint remover
NT546
Removing ball joint
a: 33 mm (1.30 in)
b: 50 mm (1.97 in)
r: R11.5 mm (0.453 in)
KV48103500
Pressure gauge
NT547
Measuring oil pressure
ST3127S000
1 GG91030000
Torque wrench
2 HT62940000
Socket adapter
3 HT62900000
Socket adapter
NT541
Measuring turning torque
Commercial Service ToolNLST0005
Tool number Description
Oil pump attachment
NT774
Disassembling and assembling oil pump
Unit: mm (in)
PREPARATION
Special Service Tools
ST-3
Tool number Description
KV48105210
Sprocket holder
NT809
Removing and Installing power steering oil pump
PREPARATION
Commercial Service Tool (Cont’d)
ST-4
SST489B
Checking Steering Wheel PlayNLST0007+With wheels in a straight-ahead position, check steering wheel
play.
Steering wheel play:
35 mm (1.38 in) or less
+If it is not within specification, check the following for loose or
worn components.
Steering gear assembly
Steering column
Front suspension and axle
SST490BA
Checking Neutral Position on Steering WheelNLST0008PRE-CHECKINGNLST0008S01+Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SU-15, SDS.
+Verify that the steering gear is centered before removing the
steering wheel.
CHECKINGNLST0008S021. Check that the steering wheel is in the neutral position when
driving straight ahead.
2. If it is not in the neutral position, remove the steering wheel and
reinstall it correctly.
3. If the neutral position is between two teeth, loosen tie-rod lock
nuts. Turn the tie-rods by the same amount in opposite direc-
tions on both left and right sides.
SMA127
Front Wheel Turning AngleNLST00091. Rotate steering wheel all the way right and left; measure turn-
ing angle.
Turning angle of full turns:
Refer to SU-15, SDS.
2. If it is not within specification, check rack stroke.
Rack stroke“S”:
Refer to SDS, ST-28.
SST663B
Checking Gear Housing MovementNLST00101. Check the movement of steering gear housing during station-
ary steering on a dry paved surface.
+Apply a force of 49 N (5 kg, 11 lb) to steering wheel to check
the gear housing movement.
Turn off ignition key while checking.
Movement of gear housing:
±2mm(±0.08 in) or less
2. If movement exceeds the limit, replace mount insulator after
confirming proper installation of gear housing clamps.
ON-VEHICLE SERVICE
Checking Steering Wheel Play
ST-6
Checking and Adjusting Drive BeltsNLST0011Refer to EM-17,“Checking Drive Belts”.
SMA851B
Checking Steering Gear and LinkageNLST0037STEERING GEARNLST0037S01+Check gear housing and boots for looseness, damage or
grease leakage.
+Check connection with steering column for looseness.
STEERING LINKAGENLST0037S02+Check ball joint, dust cover and other component parts for
looseness, wear, damage or grease leakage.
YST003
Checking Fluid LevelNLST0012Check fluid level, referring to the scale on reservoir tank.
Use“HOT”range for fluid temperatures of 50 to 80°C (122 to
176°F).
Use“COLD”range for fluid temperatures of 0 to 30°C (32 to 86°F).
CAUTION:
+Do not overfill.
+Recommended fluid is DEXRON
TMIII or equivalent. Refer
to MA-20,“Fluids and Lubricants”.
YST004
YST005
Checking Fluid LeakageNLST0013Check the lines for improper attachment and for leaks, cracks,
damage, loose connections, chafing and deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of fluid in oil tank rises to 60 to 80°C
(140 to 176°F).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each“lock”position for five seconds
and carefully check for fluid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
4. If fluid leakage at connectors is noticed, loosen flare nut and
then retighten.
Do not overtighten connector as this can damage O-ring,
washer and connector.
5. If fluid leakage from power steering pump is noticed, check
power steering pump. Refer to ST-21.
6. Check rack boots for accumulation of power steering fluid.
ON-VEHICLE SERVICE
Checking and Adjusting Drive Belts
ST-7