NISSAN PRIMERA 1999 Electronic Repair Manual

Part SRS (except the
side air bag) is acti-
vatedSRS is NOT activated
Instrument panel 1. When passenger's air bag inflates, check the following points for bending, deformities or cracks.
lOpening portion for passenger's air bag
NRS072
lPassenger's air bag module brackets
Back face of instrument panel
NRS079
lThe portions securing the instrument panel
NRS073
2. If no damage is found, reinstall the instrument panel.
3. If damagedÐREPLACE the instrument panel with bolts.
Check points
Check points
Check points
COLLISION DIAGNOSIS
RS-58

FOR SIDE COLLISION
To repair the SRS for a side collision, perform the following steps.
When the built-in type front side air bag is activated in the side collision:
p1Replace the following components:
þ All parts of front seat back (including front seat back frame) with side air bag modules (on the side on
which side air bag is activated)
þ Diagnosis sensor unit
þ Satellite sensor (on the side on which side air bag is activated)
p2Check the SRS components and the related parts using the table shown below.
lReplace the SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
p3Conduct self-diagnosis using CONSULT-II, or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-37). Ensure entire SRS operates properly.
When SRS is not activated in the side collision:
p1Check the SRS components and the related parts using the table shown below.
lReplace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
p2Conduct self-diagnosis using CONSULT-II, or ªAIR BAGº warning lamp. Refer to ªSRS Operation Checkº
for details (RS-37). Ensure entire SRS operates properly.
In the case of the side collision
Part Side air bag is
activatedSRS is NOT activated
Built-in type front
side air bags mod-
ule (LH or RH)REPLACE all parts
of seat back with
deployed side air
bag module.1. Check for visible sign of damage (dents, tears, deformation) of the seat back
on the collision side.
2. If damagedÐREPLACE the damaged seat parts with new bolts and remove
the side air bag module.
3. Check for visible signs of damage (tears etc.) of the side air bag module.
4. Check harness and connectors for damage, and terminals for deformities.
5. If no damage is found, reinstall the side air bag module with new torx nuts
coated with bonding agent.
6. If damagedÐREPLACE the side air bag module with new torx nuts coated
with bonding agent. Air bag must be deployed before disposing of it.
Satellite sensor (LH
or RH)REPLACE the sat-
ellite sensor on the
collision side with
new nuts.
(Repair the center
pillar inner, etc.
before installing
new one if dam-
aged.)1. Remove the 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 satel-
lite sensor.
3. Install the satellite sensor to check fit.
4. If no damage is found, reinstall the satellite sensor with new nuts coated with
bonding agent.
5. If damagedÐREPLACE the satellite sensor with new nuts coated with bond-
ing agent.
Diagnosis sensor REPLACE the
diagnosis 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 special
bolts and ground bolt coated with bonding agent.
4. If damagedÐREPLACE the diagnosis sensor unit with new special bolts and
ground bolt coated with bonding agent.
Seat belt pre-ten-
sioner assembly1. Check if the seat belt can be extended smoothly.
If the seat belt cannot be extended smoothly.
þ Check for deformities of the center pillar inner.
þ 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 ad con-
nectors 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. If no damage is found, reinstall the seat belt pre-tensioner assembly with new bolts coated with
bonding agent.
5. If damagedÐREPLACE the seat belt pre-tensioner assembly with new bolts coated with bonding
agent. The seat belt pre-tensioner assembly must be deployed before disposing of it.
COLLISION DIAGNOSIS
RS-59

Part Side air bag is acti-
vatedSRS is NOT activated
Seat with built-in
type front side air
bagREPLACE all parts
of seat back
(including 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.
lHarness, connectors and terminalslFrame and recliner (for front seat), and also adjuster and slides (for front
seat)
3. If no damage is found, reinstall the seat.
4. If damagedÐREPLACE the damaged seat parts with new bolts.
Center pillar inner 1. Check the center pillar inner on the collision side for damage (dents, cracks, deformation).
2. If damagedÐREPAIR the center pillar inner.
Trim 1. Check for visible signs of damage (dents, racks, deformation) of the interior trim on the collision
side.
2. If damagedÐREPLACE the damaged trim parts.
COLLISION DIAGNOSIS
RS-60

STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS AND PREPARATION.......................... 2
Precautions ................................................................ 2
Preparation ................................................................ 2
PREPARATION.............................................................. 3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING................................................... 4
NVH Troubleshooting Chart....................................... 4
ON-VEHICLE INSPECTION.......................................... 5
Checking Steering Wheel Play .................................. 5
Checking Neutral Position on Steering Wheel .......... 5
Front Wheel Turning Angle ........................................ 5
Checking Gear Housing Movement .......................... 5
Checking and Adjusting Drive Belts .......................... 6
Checking Fluid Level ................................................. 6
Checking Fluid Leakage ............................................ 6
Bleeding Hydraulic System........................................ 6
Checking Steering Wheel Turning Force .................. 7
Checking Hydraulic System....................................... 8
STEERING WHEEL AND STEERING COLUMN.......... 9
Removal and Installation ......................................... 10
Disassembly and Assembly ...................................... 11
Inspection................................................................. 12POWER STEERING GEAR AND LINKAGE.............. 14
Removal and Installation ......................................... 14
Disassembly............................................................. 17
Inspection................................................................. 17
Assembly ................................................................. 19
SR20DE
POWER STEERING OIL PUMP.................................. 20
CD20T
POWER STEERING OIL PUMP.................................. 21
QG16, 18DE
POWER STEERING OIL PUMP.................................. 22
SR20DE, CD20T, QG16DE, QG18DE
SERVICE DATA AND SPECIFICATIONS (SDS)........ 23
General Specifications ............................................. 23
Inspection and Adjustment ...................................... 23
ST

Precautions
Supplemental Restraint System (SRS) ªAIR BAGº
and ªSEAT BELT PRE-TENSIONERº
The Supplemental Restraint System ªAir Bagº and ªSeat Belt Pre-tensionerº, used along with a seat belt,
help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The
Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and
on the instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable.
If the vehicle is equipped with side air bag as the Supplemental Restraint System, the side air bag used along
with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side
collision. The side air bag consists of air bag modules (located in the outer side of front seats), satellite
sensor, diagnosis sensor unit (which is one of components of air bags for a frontal collision), wiring harness,
warning lamp (which is one of components of air bags for a frontal collision).
WARNING:
lTo 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 dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to do so
in this Service Manual. SRS wiring harnesses are covered with yellow insulation (either just
before the harness connectors or for the complete harness), for easy identification.
STEERING SYSTEM
lBefore disassembly, thoroughly clean the outside of the unit.
lDisassembly 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.
lWhen disassembling parts, be sure to place them in order on a part rack so they can be rein-
stalled in their correct positions.
lOnly use nylon cloths or paper towels to clean parts. Do not use rags or other materials contain-
ing lint. Residual debris may damage the system.
lBefore inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
lBefore assembly, apply a coat of recommended ATF* to hydraulic parts. Vaseline may be applied
to O-rings and seals. Do not use any grease.
lReplace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: Automatic transmission fluid
Preparation
SPECIAL SERVICE TOOL
Tool number
Tool nameDescription
ST27180001
Steering wheel puller
NT170
Removing and installing steering wheel
PRECAUTIONS AND PREPARATION
ST-2

SPECIAL SERVICE TOOLS
Tool number
Tool nameDescription
KV48100700
Torque adapter
Measuring pinion rotating torque
HT72520000
Ball joint remover
Removing ball joint
ST27091000
Pressure gauge
Measuring oil pressure
KV48102500
Pressure gauge adapter
Measuring oil pressure
ST3127S000
p1GG91030000
Torque wrench
p2HT62940000
Socket adapter
p3HT62900000
Socket adapter
Measuring turning torque
PREPARATION
ST-3

NVH Troubleshooting Chart
Use the chart below to help you find the cause of the symptom.
If necessary, repair or replace these parts.
Reference pageST-6
ST-6
ST-18
ST-18
ST-19
ST-6
ST-5
ST-7
Refer to MA section.
Ð
ST-12
ST-5
ST-13
ST-11
ST-14
NVH in FA section
NVH in FA, RA section
NVH in FA section
NCH in FA section
NVH in BR section
Possible cause and
SUSPECTED PARTS
Fluid level
Air in hydraulic system
Tie-rod ball joint swinging force
Tie-rod ball joint rotating torque
Tie-rod ball joint end play
Steering gear fluid leakage
Steering wheel play
Steering wheel turning force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
DRIVE SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
BRAKES
Symptom STEERINGNoiseXXXXXXXXX XXXXX
Shake X X XXXXXX
VibrationXXXXX XXX
Shimmy X X X XXXXX
Judder X XXXXX
X: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
ST-4

Checking Steering Wheel Play
1. With wheels in a straight-ahead position, check steering
wheel play.
Steering wheel play:
35 mm (1.38 in) or less
2. If it is not within specification, check steering gear assembly
when front suspension and axle, steering gear assembly and
steering column are mounted correctly.
Checking Neutral Position on Steering Wheel
Pre-checking
lMake sure that wheel alignment is correct.
Wheel alignment:
Refer to SDS in FA section
lVerify that the steering gear is centered before removing the
steering wheel.
Checking
1. 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 serrated teeth, loosen
tie-rod lock nut and move tie-rod in the opposite direction by
the same amount on both left and right sides to compensate
for error in the neutral position.
Front Wheel Turning Angle
1. Rotate steering wheel all the way right and left; measure
turning angle.
Turning angle of full turns:
Refer to SDS in FA section
2. If it is not within specification, check rack stroke.
Rack stroke ªSº:
Refer to SDS (ST-23)
Checking Gear Housing Movement
1. Check the movement of steering gear housing during station-
ary steering on a dry paved surface.
lApply 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:
 2 mm ( 0.08 in) or less
2. If movement exceeds the limit, replace mount insulator after
confirming correct installation of gear housing clamps.
.SST489B
SST490BA
SMA127
.SST059B
ON-VEHICLE INSPECTION
ST-5

Checking and Adjusting Drive Belts
Refer to section MA for Drive Belt Inspection.
Checking Fluid Level
Check fluid level.
Fluid level should be checked using ªHOTº range on dipstick at
fluid temperatures of 50 to 80ÉC (122 to 176ÉF) or using ªCOLDº
range on dipstick at fluid temperatures of 0 to 30ÉC (32 to 86ÉF).
CAUTION:
lDo not overfill.
lRecommended fluid is Automatic Transmission Fluid
ªDEXRONTMº type.
Checking Fluid Leakage
Check the lines for security, leaks, cracks, damage, loose
connections, chafing or deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of fluid in oil tank rises to 60 to 80ÉC
(140 to 176ÉF).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each ªlockº 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. Check rack boots for accumulation of power steering fluid.
Bleeding Hydraulic System
1. Raise front end of vehicle until wheels are clear of the
ground.
2. Add fluid into oil tank to specified level. Then quickly turn
steering wheel fully to right and left and lightly touch steer-
ing stoppers.
Repeat steering wheel operation until fluid level no longer
decreases.
3. Start engine.
Repeat step 2 above.
NST031 COLD:
0 - 30ÉC
(32 - 86ÉF)HOT:
50 - 80ÉC
(122 - 176ÉF)
SST681B
ON-VEHICLE INSPECTION
ST-6

lIncomplete air bleeding will cause the following to occur.
When this happens, bleed air again.
a. Generation of air bubbles in reservoir tank
b. Generation of clicking noise in oil pump
c. Excessive buzzing in oil pump
While the vehicle is stationary or while moving the steering wheel
slowly, fluid noise may occur in the valve or oil pump. This noise
is inherent in this steering system, and it will not affect perfor-
mance or durability of the system.
Checking Steering Wheel Turning Force
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating tempera-
ture. [Make sure temperature of fluid is approximately 60 to
80ÉC (140 to 176ÉF).]
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has
been turned 360É from neutral position.
Steering wheel turning force:
44.1 N (4.5 kg, 9.9 lb) or less
5. If steering wheel turning force is out of specification, check
rack sliding force to detect condition of steering gear assem-
bly.
a. Disconnect steering column lower joint and knuckle arms
from the gear.
b. Start and run engine at idle to make sure steering fluid has
reached normal operating temperature.
c. While pulling tie-rod slowly from the neutral position, make
sure rack sliding force is within specification.
Rack sliding force:
284 N (29 kg, 64 lb) or less
6. If rack sliding force is not within specification, replace steer-
ing gear assembly.
SST491B
SST090B
ON-VEHICLE INSPECTION
Bleeding Hydraulic System (Cont'd)
ST-7