power steering NISSAN NAVARA 2005 Repair User Guide

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-355
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionEBS01KN2
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h(25MPH)and185km/h(115MPH).
ECM controls fuel injection value to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
SET OPERATION
Press ASCD MAIN switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 185 km/h (115
MPH), press SET/COST switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed
until the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
lCANCEL switch is depressed
lMore than 2 switches at ASCD steering switch are depressed at the same time (Set speed will be cleared)
lBrake pedal is depressed
lClutch pedal is depressed or gear position is changed to the neutral position (M/T models)
lSelector lever is changed to N, P, R position (A/T models)
lVehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
lMalfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is depressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is depressed after cancel operation other than depressing MAIN
switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition
must meet following conditions.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed control Fuel injector and Fuel pump Stop lamp switch Brake pedal operation
ASCD clutch switch (M/T) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switchGear position
Combination meter* Vehicle speed
TCM* Powertrain revolution

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTIONEM
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ENGINE MECHANICAL
PRECAUTIONS .......................................................... 4
Precautions for Draining Engine Coolant ................. 4
Precautions for Disconnecting Fuel Piping .............. 4
Precautions for Removal and Disassembly ............. 4
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 4
Precautions for Assembly and Installation ............... 4
Parts Requiring Angle Tightening ............................. 4
Precautions For Liquid Gasket ................................. 5
REMOVAL OF LIQUID GASKET .......................... 5
LIQUID GASKET APPLICATION PROCEDURE..... 5
PREPARATION ........................................................... 6
Special Service Tools ............................................... 6
Commercial Service Tools ........................................ 8
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING .............................................. 10
NVH Troubleshooting — Engine Noise .................. 10
Use the Chart Below to Help You Find the Cause
of the Symptom. ...................................................... 11
DRIVE BELTS ........................................................... 12
Checking Drive Belts .............................................. 12
Deflection Adjustment ............................................ 13
POWER STEERING OIL PUMP BELT ............... 13
A/C COMPRESSOR, ALTERNATOR AND
WATER PUMP BELT .......................................... 14
Removal and Installation ........................................ 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 14
AIR CLEANER AND AIR DUCT ............................... 15
Components ........................................................... 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 16
CHANGING AIR CLEANER FILTER ................... 17
CHARGE AIR COOLER ........................................... 18
Components ........................................................... 18
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSPECTION AFTER REMOVAL ....................... 19
INSTALLATION ................................................... 19INTAKE MANIFOLD ................................................. 20
Components ........................................................... 20
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSPECTION AFTER REMOVAL ....................... 22
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 25
CATALYST ................................................................ 26
Components ........................................................... 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 27
TURBO CHARGER ................................................... 28
Components ........................................................... 28
Removal and Installation ........................................ 29
REMOVAL ........................................................... 29
INSPECTION AFTER REMOVAL ....................... 30
TROUBLE DIAGNOSIS OF TURBOCHARGER... 32
INSTALLATION ................................................... 33
EXHAUST MANIFOLD ............................................. 34
Components ........................................................... 34
Removal and Installation ........................................ 34
REMOVAL ........................................................... 34
INSPECTION AFTER REMOVAL ....................... 35
INSTALLATION ................................................... 35
INSPECTION AFTER INSTALLATION ................ 35
OIL PAN AND OIL STRAINER ................................. 36
Components ........................................................... 36
Removal and Installation ........................................ 36
REMOVAL ........................................................... 36
INSPECTION AFTER REMOVAL ....................... 38
INSTALLATION ................................................... 38
INSPECTION AFTER INSTALLATION ................ 40
GLOW PLUG ............................................................ 41
Components ........................................................... 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSTALLATION ................................................... 41
VACUUM PUMP ........................................................ 42

EM-12
DRIVE BELTS
DRIVE BELTS
PFP:02117
Checking Drive BeltsEBS01EJ4
lBefore inspecting engine, make sure engine has cooled down; wait approximately 30 minutes after engine
has been stopped.
lVisually inspect all belts for wear, damage or cracks on contacting surfaces and edge areas.
lMeasure deflection at the marked point ( ).
CAUTION:
lWhen checking belt deflection immediately after installation, first adjust it to the specified value.
Then, after turning crankshaft two turns or more, re-adjust to the specified value to avoid varia-
tion in deflection between pulleys.
lTighten idler pulley lock nut by hand and measure deflection without looseness.
Belt Deflection:
*: When engine is cold.1. Idler pulley 2. Power steering oil pump belt 3. Power steering oil pump
4. Crankshaft pulley 5.A/C compressor (Models with A/C)
Dummypulley(ModelswithoutA/C)6. Alternator
7. Idler pulley 8. Water pump pulley 9.A/C compressor, alternator and
water pump belt
PBIC4038E
Applied beltBelt deflection with 98 N (10 kg, 22 lb) force applied* mm (in)
New Adjusted Limit for re-adjusting
A/C compressor, alternator and water
pump belt2.9 - 3.4
(0.114 - 0.134)3.9 - 4.4
(0.154 - 0.173)8.5 (0.335)
Power steering oil pump belt4.6 - 5.4
(0.181 - 0.213)7.1 - 7.7
(0.280 - 0.303)11.3 (0.445)

DRIVE BELTS
EM-13
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Deflection AdjustmentEBS01EJ5
lAdjust belts with the parts shown below.
CAUTION:
lWhen a new belt is installed as a replacement, adjust it to the specified value under “New” value
because of insufficient adaptability with pulley grooves.
lIf the belt deflection of the current belt is out of the “Limit for re-adjusting”, adjust to the
“Adjusted” value.
lWhen checking belt deflection immediately after installation, first adjust it to the specified value.
Then, after turning crankshaft two turns or more, re-adjust it to the specified value to avoid vari-
ation in deflection between pulleys.
lMake sure the belts are fully fitted into the pulley grooves during installation.
lHandle with care to avoid smearing the belts with engine oil or engine coolant.
lDo not twist or bend the belts with strong force.
POWER STEERING OIL PUMP BELT
1. Remove engine undercover front. Refer toEI-15, "FRONT BUMPER".
2. Loosen idler pulley lock nut (B).
3. Turn adjusting bolt (A) to adjust. Refer toEM-13, "
Deflection Adjustment".
4. Tighten idler pulley lock nut (B).
1. Idler pulley 2. Power steering oil pump belt 3. Power steering oil pump
4. Crankshaft pulley 5.Dummy pulley (Models without A/C)
A/C compressor (Models with A/C)6. Alternator
7. Idler pulley 8. Water pump pulley 9.A/C compressor, alternator and
water pump belt
A. Adjusting bolt B. Idler pulley lock nut C. Adjusting nut
D. Idler pulley lock nut
PBIC4039E
Applied belt Belt adjustment method
Power steering oil pump belt Adjusting bolt on idler pulley (A)
Alternator and water pump belt or A/C compressor, alternator and
water pump beltAdjusting nut on idler pulley (C)
Nut B:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)

EM-14
DRIVE BELTS
A/C COMPRESSOR, ALTERNATOR AND WATER PUMP BELT
1. Loosen idler pulley lock nut (D).
2. Turn adjusting nut (C) to adjust. Refer toEM-13, "
Deflection Adjustment".
3. Tighten lock nut (D).
Removal and InstallationEBS01EJ6
REMOVAL
1. Loosen each belt. Refer toEM-13, "Deflection Adjustment".
2. Remove power steering oil pump belt. Refer toEM-13, "
POWER STEERING OIL PUMP BELT".
3. Remove A/C compressor, alternator and water pump belt. Refer toEM-14, "
A/C COMPRESSOR, ALTER-
NATOR AND WATER PUMP BELT".
INSTALLATION
1. Install each belt on pulley in the reverse order of removal.
2. Adjust belt deflection. Refer toEM-13, "
Deflection Adjustment".
3. Tighten nuts provided for adjustment to the specified torque.
4. Make sure again that each belt deflection is as specified.Nut D:
: 45.0 N·m (4.6 kg-m, 33 ft-lb)

OIL PAN AND OIL STRAINER
EM-37
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3. Remove oil pan lower bolts, loosen bolts in the reverse order of
that shown in the figure.
4. Remove oil pan lower.
a. Insert the seal cutter [SST] between oil pan upper and oil pan
lower.
CAUTION:
lBe careful not to damage aluminum mating surface.
lDo not insert screwdriver, or oil pan flange will be
deformed.
b. Slide the seal cutter by tapping on the side of the seal cutter with
a hammer.
c. Remove oil pan lower.
5. Remove oil strainer.
6. Remove power steering oil pump belt. Refer toEM-12, "
DRIVE BELTS".
7. Remove power steering oil pump bracket and move power steering oil pump aside with its piping con-
nected. Temporarily secure it on the vehicle side with a rope to avoid putting load on it. Refer toPS-25,
"POWER STEERING OIL PUMP".
8. Disconnect oil return hose (vacuum pump) from oil pan upper. Refer toEM-42, "
VACUUM PUMP".
9. Remove A/C compressor bracket mounting bolts (A).
10. Remove crankshaft position sensor and oil level sensor.
CAUTION:
lAvoid impacts such as a dropping.
lDo not disassemble.
lKeep it away from metal particles.
lDo not place sensor close to magnetic materials.
11. Remove front propeller shaft (4WD models). Refer toPR-3, "
FRONT PROPELLER SHAFT".
12. Remove RH and LH front drive shaft (4WD models). Refer toFAX-7, "
DRIVE SHAFT".
13. Remove front final drive assembly (4WD models). Refer toFFD-15, "
FRONT FINAL DRIVE ASSEMBLY".
14. Remove rear plate cover and transmission joint bolts.
: Vehicle front
PBIC3425E
SEM365EA
1 : Oil pan upper
2 : A/C compressor bracket
: Vehicle front
PBIC3426E

CAMSHAFT
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7. Apply liquid gasket to cylinder head rear cover as shown in the
figure.
Use Genuine Liquid Gasket or Equivalent.
8. Install cylinder head rear cover and tighten mounting bolts in
numerical order shown in the figure.
9. Before installing spill tube after installing secondary timing chain, check and adjust valve clearance. Refer
toEM-66, "
Valve Clearance".
10. Hereafter, install in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
lBefore starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer toMA-14, "
RECOMMENDED FLUIDS AND LUBRICANTS".
lUse procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
lRun engine to check for unusual noise and vibration.
lWarm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
lBleed air from lines and hoses of applicable lines, such as in cooling system.
lAfter cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
*1: Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
*2: Check engine oil level 10 minutes after engine stopped.
PBIC3446E
M6´50 mm : Bolt No.1, 2
M6´20 mm : Bolt No.3, 4
M8´20 mm : Bolt No.5, 6
PBIC3445E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level (*2)
Other oils and fluid (*1) Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-78
SECONDARY TIMING CHAIN
Summary of the inspection items:
*1: Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
*2: Check engine oil level 10 minutes after engine stopped.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level (*2)
Other oils and fluid (*1) Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-80
PRIMARY TIMING CHAIN
lRefer toGI-10, "Components"for symbol marks in the figure.
Removal and InstallationEBS01E69
CAUTION:
lAfter removing timing chain, do not turn crankshaft and camshaft separately, or valves will strike
piston heads.
lWhen installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting
surfaces with new engine oil.
REMOVAL
1. Remove power steering oil pump and power steering oil pump bracket. Refer toPS-25, "POWER STEER-
ING OIL PUMP".
2. Remove idler pulleys.
3. Remove rocker cover. Refer toEM-56, "
ROCKER COVER".
4. Remove oil pan (upper and lower). Refer toEM-36, "
OIL PAN AND OIL STRAINER".
5. Remove fuel injector. Refer toEM-44, "
INJECTION TUBE AND FUEL INJECTOR".
6. Remove secondary timing chain and associated parts. Refer toEM-73, "
SECONDARY TIMING CHAIN".
7. When removing rear chain case, remove camshaft sprockets. Refer toEM-59, "
CAMSHAFT".
8. Remove crankshaft pulley.
a. Hold crankshaft pulley with the pulley holder (commercial ser-
vice tool).
b. Loosen crankshaft pulley fixing bolt and pull out the bolt approx-
imately 10 mm (0.39 in).
1. Chain tensioner 2. Spring 3. Slack guide
4. Plunger 5. Camshaft sprocket 6. Washer
7. Fuel pump sprocket 8. O-ring 9. Tension guide
10. Tension guide 11. Chain guide 12. Slack guide
13. Spacer 14. Front chain case 15. Rubber washer
16. Gasket 17. Secondary timing chain 18. Chain guide
19. Idler pulley 20. Vacuum pump cover 21. Crankshaft pulley
22. Front oil seal 23. Oil pump housing 24. Crankshaft gear
25. Primary timing chain 26. Crankshaft sprocket 27. Key
28. Fuel pump 29. Vacuum pump 30. Seal washer
31. O-ring 32. O-ring 33. O-ring
34. Rear chain case 35. Balancer unit (4WD models) 36. Tension guide
37. A/C compressor bracket 38. Idler pulley 39. Plunger
40. Plug 41. Spring 42. Chain tensioner
PBIC3469E

PRIMARY TIMING CHAIN
EM-87
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d. Tighten bolts in numerical order shown in the figure.
lInstall the following four types of bolts, referring to the figure.
lThe shank length under the bolt neck above is the length of
threaded part (pilot portion not included).
e. After tightening all the bolts, re-tighten in the same order.
3. Install vacuum pump. Refer toEM-42, "
VACUUM PUMP".
4. Install fuel pump. Refer toEM-49, "
FUEL PUMP".
lBefore installing, make sure that spacer and the hole 6 mm
(0.24 in) in diameter on coupling are aligned.
5. Install chain guide and tension guides.
6. Install crankshaft sprocket, aligning it with crankshaft key on the
far side.
7. Install primary timing chain with fuel pump sprocket.
lWhen installing, match the alignment marks on sprockets with
color coded alignment marks (colored links) on primary timing
chain.
lInstall fuel pump sprocket washer with the surface marked “F”
(front mark) facing the front of the engine.
8. Install timing chain onto power steering oil pump sprocket and
through chain guide.
9. Use the positioning stopper pin [SST] to hold the fuel pump
sprocket and install the bolt.
lUsing the TORX wrench [SST], turn the fuel pump shaft little
by little to adjust the position of the fuel pump sprocket. Insert
positioning stopper pin into the hole 6 mm (0.24 in) in diame-
ter on fuel pump sprocket so that the stopper pin goes
through the fuel pump body. While the stopper pin is in place,
install the bolt.16 mm (0.63 in) : Bolt No. 1, 2, 16, 17, 18, 19, 20, 21, 22
20mm(0.79in) :BoltNo.3,4,6,9,10,11,13,14
25 mm (0.98 in) : Bolt No. 12, 15
35 mm (1.38 in) : Bolt No. 5, 7, 8
SBIA0211E
JEM885G
MBIA0079E
MBIA0049E