1998 NISSAN PICK-UP check engine

3. Disconnect front pin.
INSPECTION
lCheck leaf spring for cracks. Replace if necessary.
lCheck front bracket and pin, shackle, U-bolts and spring pad
for wear, cracks, straightness or damaged threads. Replace
if necessary.
lCheck all bushings for deformation or cracks. Replace if nec-
essary.
[4WD models for Australia and Europe: Rear spring front
bushing]
Make sure that front bushing is properly installed.
INSTALLATION
1. Apply soapsuds to rubber bushing.
2. Install spring shackle and front pin, and finger tighten the
nuts.
3. Install spring pad and nuts under leaf spring or axle case.
4. Tighten U-bolt mounting nuts diagonally.
Tighten U-bolts so that the lengths of all U-bolts under
spring pad are the same.
5. Install shock absorber, and finger tighten the nuts.
6. Remove stands and bounce the vehicle to stabilize suspen-
sion. (Unladen)
7. Tighten spring shackle nuts, front pin nuts and shock
absorber nuts.
When installing rubber parts, final tightening must be car-
ried out under unladen condition* with tires on the ground.
* Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
SRA705
SRA535AB
.
SRA727
SRA703
SRA754
REAR SUSPENSION
Leaf Spring (Cont'd)
RA-14

Steering System
Checking and Adjusting Drive Belts (For
power steering)
Refer to MA section (``Checking Drive Belts'', ``ENGINE MAIN-
TENANCE'').
Checking Fluid Level (For power steering)
Check fluid level with engine off.
Check fluid level with dipstick on reservoir cap.
Use ``HOT'' range for fluid temperatures of 50 to 80ÉC (122 to
176ÉF). Use ``COLD'' range for fluid temperatures of 0 to 30ÉC
(32 to 86ÉF).
CAUTION:
lDo not overfill.
lRecommended fluid is Automatic Transmission Fluid
type ``DEXRONTMII E, DEXRONTMIII'', or equivalent.
SST720C
SST280B
ON-VEHICLE SERVICE
ST-4

Checking Fluid Leakage (For power steering)
Check lines for improper attachment, leaks, cracks, damage,
chafing or deterioration.
1. Run engine between idle speed and 1,000 rpm.
lMake sure temperature of fluid in reservoir tank rises to
60 to 80ÉC (140 to 176ÉF).
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 steering wheel at lock position for more than 15
seconds.
4. If fluid leakage from any line 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-34.
6. If fluid leakage from power steering gear is noticed, check
power steering gear. Refer to ST-19 (PB48S), or ST-27
(PB59K).
Bleeding Hydraulic System (For power
steering)
1. Raise front end of vehicle until wheels are clear of the
ground.
2. Add fluid to reservoir 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.
lIncomplete air bleeding will cause the following to occur:
a. Air bubbles in reservoir tank
b. Clicking noise in power steering pump
c. Excessive buzzing in power steering pump
When this happens, bleed air again.
Fluid noise may occur in the valve or power steering pump. This
is common when the vehicle is stationary or while turning the
steering wheel slowly. This does not affect the performance or
durability of the system.
SST621A
ON-VEHICLE SERVICE
ST-5

Checking Steering Wheel Turning Force (For
power steering)
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine and run at idle speed or 1,000 rpm.
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:
PB48S-type
24.5 - 29.4 N (2.5 - 3.0 kg, 5.5 - 6.6 lb)
PB59K-type
39 N (4 kg, 9 lb) or less
5. If steering wheel turning force is out of specification, check
the following:
a. Hydraulic system. Refer to ``Checking Hydraulic System'',
ST-7.
b. Steering Column. Refer to ST-10.
c. Front suspension and axle. Refer to FA section (``Front Axle
and Front Suspension Parts'', ``ON-VEHICLE SERVICE'').
d. Steering gear turning torque. Refer to ``TURNING TORQUE
MEASUREMENT'', ST-19 (PB48S), or ST-27 (PB59K).
Checking Steering Wheel Play
lPlace wheels in a straight ahead position and check steer-
ing wheel play.
Steering wheel play:
35 mm (1.38 in) or less
lIf it is not within specification, check the following for loose
or worn components.
a. Steering column. Refer to ST-10.
b. Front suspension and axle. Refer to FA section (``Front Axle
and Front Suspension Parts'', ``ON-VEHICLE SERVICE'').
c. Steering gear. [Refer to ST-13 (manual steering),ST-19
(power steering PB48S), or ST-27 (power steering PB59K).]
SST491B
SST489B
ON-VEHICLE SERVICE
ST-6

Checking Neutral Position on Steering Wheel
lMake sure that wheel alignment is correct.
Wheel alignment:
Refer to FA section (``Inspection and Adjustment'',
``SERVICE DATA AND SPECIFICATIONS'').
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 still not correct:
a. Loosen tie-rod lock nuts.
b. Move tie-rods, in opposite direction, the same amount on
both left and right sides.
This will compensate for error in the neutral position.
Checking Front Wheel Turning Angle
1. Rotate steering wheel fully right, then left; measure turning
angle.
Turning angle of full turns:
Refer to FA section (``Inspection and Adjustment'',
``SERVICE DATA AND SPECIFICATIONS'').
2. If it is not within specification, check stopper bolt adjustment.
Refer to FA section (``FRONT WHEEL TURNING ANGLE'',
``Front Wheel Alignment'').
Checking Hydraulic System (For power
steering)
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve. Then bleed air. Refer to
``Bleeding Hydraulic System'', ST-5.
2. Run engine at idle speed or 1,000 rpm.
lMake sure temperature of fluid in reservoir tank rises to
60 to 80ÉC (140 to 176ÉF).
WARNING:
Warm up engine with shut-off valve fully opened. If engine
is started with shut-off valve closed, fluid pressure in power
steering pump increases to maximum. This will raise fluid
temperature abnormally.
3. Check pressure with steering wheel fully turned to left and
right positions while idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel at full lock position for more
than 15 seconds.
Oil pump maximum pressure:
7,649 - 8,238 kPa (76.5 - 82.4 bar, 78 - 84 kg/cm
2,
1,109 - 1,194 psi) at idling
SST490BA
SMA127
SST731C
ON-VEHICLE SERVICE
ST-7

Tilt mechanism
After installing steering column, check tilt mechanism operation.
Inspection
lWhen steering wheel does not turn smoothly, check the
steering column as follows and replace damaged parts.
a. Check column bearings for damage or unevenness. Lubri-
cate with recommended multi-purpose grease or replace
steering column as an assembly, if necessary.
b. Check jacket tube for deformation or breakage. Replace if
necessary.
lWhen the vehicle is involved in a light collision, check dimen-
sion ``L''. If it is not within specifications, replace steering
column as an assembly.
Column length ``L'':
RHD KA24 engine
822.1 - 823.7 mm (32.37 - 32.43 in)
Except RHD KA24 engine
866.1 - 867.7 mm (34.10 - 34.16 in)
SST582BB
SST723C
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly (Cont'd)
ST-12

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
lRead GI section, ``HOW TO READ WIRING DIAGRAMS''.
When you perform trouble diagnoses, read GI section, ``HOW TO FOLLOW FLOW CHART IN
TROUBLE DIAGNOSES'' and ``HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRI-
CAL INCIDENT''.
CONTENTS
PRECAUTIONS......................................................... 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models).............................................. 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models).............................................. 1
HARNESS CONNECTOR.......................................... 2
Description ............................................................. 2
STANDARDIZED RELAY.......................................... 3
Description ............................................................. 3
POWER SUPPLY ROUTING..................................... 5
Schematic .............................................................. 5
Wiring Diagram - POWER -................................... 6
Fuse ..................................................................... 13
Fusible Link .......................................................... 13
Circuit Breaker Inspection.................................... 13
GROUND DISTRIBUTION....................................... 14
BATTERY................................................................. 18
How to Handle Battery......................................... 18
Battery Test and Charging Chart......................... 21
Service Data and Specifications (SDS) ............... 25
STARTING SYSTEM............................................... 26
Wiring Diagram - START - .................................. 26
Trouble Diagnoses ............................................... 27
Construction ......................................................... 28
Removal and Installation ..................................... 30
Inspection ............................................................. 30
Assembly.............................................................. 32
Service Data and Specifications (SDS) ............... 33
CHARGING SYSTEM.............................................. 34
Wiring Diagram - CHARGE -/Gasoline Engine ... 34
Wiring Diagram - CHARGE -/Diesel Engine ....... 35Trouble Diagnoses ............................................... 36
Construction ......................................................... 38
Removal and Installation ..................................... 39
Disassembly ......................................................... 39
Inspection ............................................................. 39
Assembly.............................................................. 40
Service Data and Specifications (SDS) ............... 41
COMBINATION SWITCH........................................ 42
Check ................................................................... 42
Replacement ........................................................ 43
HEADLAMP - Conventional Type -....................... 44
Wiring Diagram - H/LAMP -/LHD Models ............ 44
Wiring Diagram - H/LAMP -/RHD Models ........... 46
Trouble Diagnoses ............................................... 48
Bulb Replacement................................................ 49
Aiming Adjustment ............................................... 49
Low Beam ............................................................ 50
HEADLAMP - Daytime Light System -................. 51
System Description .............................................. 51
Schematic ............................................................ 53
Wiring Diagram - DTRL - ..................................... 54
Trouble Diagnoses ............................................... 57
Bulb Replacement................................................ 57
Aiming Adjustment ............................................... 57
HEADLAMP - Dim-dip Lamp System -................. 58
System Description .............................................. 58
Schematic ............................................................ 58
Wiring Diagram - DIMDIP -.................................. 59
Trouble Diagnoses ............................................... 62
Bulb Replacement................................................ 62
Aiming Adjustment ............................................... 62
EL

EARTH CONNECT TO CONN. NO. CELL CODE
M1/M54 ACCESSORY RELAY (In fuse block) M14 EL-POWER
AIR BAG DIAGNOSIS SENSOR UNIT (4WD
models)M110 RS-SRS
ASHTRAY ILLUMINATION M34 EL-ILL
BLOWER RELAY (In fuse block) M14 EL-POWER
CHECK CONNECTOR (NA engine) M12 EC-CHOKE
CHECK CONNECTOR (Z engine) M13 EC-CHOKE
CIGARETTE LIGHTER SOCKET M37 EL-CIGAR
COMBINATION FLASHER UNIT M15 EL-TURN
DOOR LOCK TIMER M51 EL-D/LOCK
DOOR SWITCH DRIVER SIDE (For Europe) M118 EL-BUZZER EL-MULTI
ECM (ENGINE CONTROL MODULE) M66 EC-GLOW EC-PLA EC-EGRC/V
FAN SWITCH ILLUMINATION (Except for
Europe and Australia)M403 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH ILLUMINATION (For Europe and
Australia)M40 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH (Except for Europe and Australia) M404 EC-FIPOT HA-HEATER HA-A/C,M
FAN SWITCH (For Europe and Australia) M39 HA-HEATER HA-A/C,M
FRONT SEAT LH M119 EL-H/SEAT
FRONT SEAT RH M122 EL-H/SEAT
FRONT WIPER AMPLIFIER
(RHD models without KA engine and LHD mod-
els)M220 EL-WIPER
FRONT WIPER AND WASHER SWITCH M28 EL-WIPER
FRONT WIPER MOTOR
(RHD models without KA engine and LHD mod-
els)M221 EL-WIPER
FUEL FILTER SWITCH (LHD models with die-
sel engine)M259 EL-WARN EL-BUZZER
FUEL PUMP CONTROL MODULE M22 EC-FPCM
FUEL RETURN CONTROL SOLENOID VALVE
(LHD models with NA engine)M257 EC-F/RTN
GLOW CONTROL UNIT
(TD27 engine except for cold areas and QD
engine)M29 EC-GLOW EC-PLA
GLOW CONTROL UNIT (TD27 engine for cold
areas)M30 EC-GLOW EC-PLA
GLOW RELAY-1 (LHD models with diesel
engine except for Europe)M253 EC-GLOW
GLOW RELAY-2 (TD27 engine for cold areas) M256 EC-GLOW
HAZARD SWITCH M41 EL-TURN EL-ILL
HEADLAMP WASHER SWITCH M70 EL-ILL EL-HLC
HEATED SEAT SWITCH LH M602 EL-H/SEAT
HEATED SEAT SWITCH RH M603 EL-H/SEAT
IACV-FICD SOLENOID VALVE (KA engine) M203 EC-FICD HA-A/C,M
IGNITION RELAY (In fuse block) M14 EL-POWER
MULTI-REMOTE CONTROL RELAY-3 M706 EL-MULTI
MULTI-REMOTE CONTROL RELAY-4 M707 EL-MULTI
MULTI-REMOTE CONTROL UNIT M703 EL-MULTI
POWER WINDOW RELAY M9 EL-WINDOW
REAR WINDOW DEFOGGER SWITCH M42 EL-DEF
SEAT BELT SWITCH M109 EL-WARN
SPIRAL CABLE (2WD models with air bag) M26 RS-SRS
COMBINATION METER (4WD WARNING
LAMP)N6 EL-WARN
COMBINATION METER (ABS WARNING
LAMP)N6 BR-ABS EL-WARN
GROUND DISTRIBUTION
EL-14