
REMOVAL
1. Remove the following:
+Engine coolant draining
+Charge air cooler
+Air inlet pipe
+Throttle body
+Rocker cover
+Oil level gauge guide
+EGR guide tube
+EGR volume control solenoid valve
+Fuel hose
+Injection tube
+Radiator upper hose
+Radiator shroud
+Cooling fan
+Drive belt
+Vacuum pipe
+Vacuum pump
2. Move the power steering pump.
3. Remove the harness connector from the fuel injection pump.
+After pulling the connector stopper all the way back, remove
the connector.
+When the stopper is pulled all the way back, the interlocked-
connector will come off.
As for installation, when the connector is pushed all the way
forward until the stopper locks, the interlocked-connector is
inserted.
4. Remove the fuel injection pump rear bracket.
5. Remove the chain cover.
+Remove the installation bolts A, B, and C shown in the fig-
ure (left).
CAUTION:
During chain cover removal, seal the opening to prevent
foreign objects from getting into the engine.
6. Fix the internal mechanism of the idler gear (scissors gear
structure).
a. Remove the plug on the front side of the gear case.
b. While turning the crankshaft pulley clockwise, check the
tightening bolt hole of the idler gear internal mechanism
through the plug hole.
+Conduct the visual check using a mirror.
+When checking, note that there are 2 other holes (with no
thread) beside the tightening bolt hole on the idler gear.
JEF260Z
JEF261Z
JEF262Z
BASIC SERVICE PROCEDUREZD30DDTi
Electronic Control Fuel Injection Pump (Cont'd)
EC-1027

ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
14 L Cooling fan relayEngine is running.
Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
Engine is running.
Cooling fan is operatingApproximately 0.1V
On Board Diagnosis Logic
This diagnosis continuously monitors the engine coolant temperature.
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
Malfunction is detected when ... Check Items (Possible Cause)
+Cooling fan does not operate properly (Overheat).
+Cooling fan system does not operate properly (Overheat).
+Engine coolant was not added to the system using the proper
filling method.+Harness or connectors
(The cooling fan circuit is open or shorted.)
+Cooling fan
+Radiator hose
+Radiator
+Radiator cap
+Water pump
+Thermostat
+Fan belt
+Engine coolant temperature sensor
For more information, refer to ªMAIN 12 CAUSES OF
OVERHEATINGº, EC-1116.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the MA
section (ªChanging Engine Coolantº, ªENGINE MAINTENANCEº). Also, replace the engine oil.
1) Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure
to use coolant with the proper mixture ratio. Refer to MA section (ªAnti-freeze Coolant Mixture
Ratioº, ªRECOMMENDED LUBRICANTS AND FLUIDSº).
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC 0208 OVER HEATZD30DDTi
EC-1106

Overall Function Check
Use this procedure to check the overall function of the cooling
fan. During this check, a DTC might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Seri-
ous burns could be caused by high pressure fluid escaping
from the radiator.
Wrap a thick cloth around the cap. Carefully remove the cap
by turning it a quarter turn to allow built-up pressure to
escape. Then turn the cap all the way off.
WITH CONSULT-II
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is
below the proper range, skip the following steps and go to
ªDiagnostic Procedureº, EC-1109.
2) Confirm whether customer filled the coolant or not. If cus-
tomer filled the coolant, skip the following steps and go to
ªDiagnostic Procedureº, EC-1109.
3) Turn ignition switch ªONº.
4) Perform ªCOOLING FANº in ªACTIVE TESTº mode with
CONSULT-II and make sure that cooling fans operate when
touching ªHIGHº or ªLOWº.
If NG, go to ªDiagnostic Procedureº, EC-1109.
WITHOUT CONSULT-II
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is
below the proper range, skip the following steps and go to
ªDiagnostic Procedureº, EC-1109.
2) Confirm whether customer filled the coolant or not. If cus-
tomer filled the coolant, skip the following steps and go to
ªDiagnostic Procedureº, EC-1109.
3) Disconnect engine coolant temperature sensor harness con-
nector.
4) Connect 150Wresistor to engine coolant temperature sensor
harness connector.
5) Start engine and make sure that cooling fan operates.
Be careful not to overheat engine.
6) If NG, go to ªDiagnostic Procedureº, EC-1109.
AEC640
SEF111X
MEC475B
DTC 0208 OVER HEATZD30DDTi
EC-1107

17 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-1116.
cINSPECTION END
Main 12 Causes of Overheating
Engine Step Inspection item Equipment Standard Reference page
OFF 1+Blocked radiator
+Blocked condenser
+Blocked radiator grille
+Blocked bumper+Visual No blocking Ð
2+Coolant mixture+Coolant tester 30 - 50% coolant mixture See ªRECOMMENDED
FLUIDS AND LUBRI-
CANTSº in MA section.
3+Coolant level+Visual Coolant up to MAX level
in reservoir tank and
radiator filler neckSee ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA sec-
tion.
4+Radiator cap+Pressure tester 78 - 98 kPa
(0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2, 11 - 14 psi)
59 - 98 kPa (0.59 - 0.98
bar, 0.6 - 1.0 kg/cm
2,
9 - 14 psi) (Limit)See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 5+Coolant leaks+Visual No leaks See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 6+Thermostat+Touch the upper and
lower radiator hosesBoth hoses should be hot. See ªThermostatº and
ªRadiatorº, ªENGINE
COOLING SYSTEMº in
LC section.
ON*1 7+Cooling fan+Visual Operating See ªDTC 0208 OVER
HEATº, EC-1105.
OFF 8+Combustion gas leak+Color checker chemical
tester 4 gas analyzerNegative Ð
ON*3 9+Coolant temperature
gauge+Visual Gauge less than 3/4
when drivingÐ
+Coolant overflow to res-
ervoir tank+Visual No overflow during driving
and idlingSee ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA sec-
tion.
OFF*4 10+Coolant return from res-
ervoir tank to radiator+Visual Should be initial level in
reservoir tankSee ªENGINE MAINTE-
NANCEº in MA section.
OFF 11+Cylinder head+Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See ªInspectionº, ªCYLIN-
DER HEADº in EM sec-
tion.
12+Cylinder block and pis-
tons+Visual No scuffing on cylinder
walls or pistonSee ªInspectionº, ªCYLIN-
DER BLOCKº in EM sec-
tion.
*1: Engine running at idle.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to ªOVERHEATING CAUSE ANALYSISº in LC section.
DTC 0208 OVER HEATZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1116

5. Disconnect harness connectors from alternator and air com-
pressor.
6. Remove alternator.
7. After removing refrigerant, remove pipes of air compressor
and inlet/outlet.
8. Disconnect heating hose, install blank cap to hose to prevent
coolant from leaking.
9. Remove heating pipe.
10. Remove heat insulator.
11. Remove catalytic converter.
Engine room (Right)
12. Remove power steering reservoir tank from bracket, and fix
it to the vehicle with a rope.
CAUTION:
Keep the reservoir tank level when fixing to prevent oil leak.
13. Remove fuel feed and return hoses.
CAUTION:
Install blank caps immediately to avoid fuel leakage.
14. Remove all harness connectors on the engine, and move
harnesses to the side of the vehicle.
Vehicle underfloor
15. Remove starter motor.
16. Detach A/T oil cooler pipes from oil pan. (A/T model)
17. Remove rear propeller shaft.
18. Remove mounting bolts to secure the engine to transmission.
1) Remove torque converter installation bolt. (A/T model)
2) Lift transmission bottom with transmission jack, and remove
rear mount members from the vehicle.
3) Lower transmission with the jack, and remove upper mount-
ing bolts securing the engine to transmission.
4) Lift transmission with the jack, and reinstall rear mount mem-
bers to the vehicle.
5) Position the jack to the front side of transmission.
6) Remove remaining mounting bolts securing the engine to
transmission.
Removal operation
19. Remove air conditioner high pressure pipes at the rear of the
engine room.
+This is due to some inconvenience in the rear slinger instal-
lation.
20. Install the engine slingers (standard service part) to front-left
and rear-right.
:25-28Nzm (2.5 - 2.9 kg-m, 18 - 20 ft-lb)
WARNING:
For engines without engine slingers, attach proper slingers
and bolts described in the PARTS CATALOG.
FEM082
ENGINE REMOVALZD
Removal (Cont'd)
EM-1065

21. Hook hoists to slingers to secure the position.
22. Remove installation nuts for left and right engine mount insu-
lators.
23. While adjusting position frequently, hoist and remove the
engine.
CAUTION:
+While performing operation, check that all necessary
wires and pipes are disconnected.
+Avoid interference with parts on the vehicle.
Installation
Install the engine in the reverse order of the removal procedure.
+Keep each mount insulator from oil adherence and damage.
+As for identification and installation direction of left and right
insulators, refer to stamping on the top surface. Refer to
EM-1064.
+As for a location with positioning pin, insert the pin correctly
to the hole of mating part.
+While keeping each mount insulator free from twisting,
tighten mounting bolts and nuts for the engine mount.
Inspection
+Before starting the engine, check coolant level and grease
amount, and if necessary, refill them to the specified level.
+Start the engine, and check that there is no abnormal noise
or vibration.
+Warm up the engine to the sufficient temperature, and check
that there is no leakage of coolant, greases, fuel, or exhaust
gas.
SEM363G
ENGINE REMOVALZD
Removal (Cont'd)
EM-1066

Fluids and Lubricants
Capacity (Approximate)
Recommended Fluids/Lubricants
Liter Imp measure
Engine oil (Refill)
With oil filter
ZD30DDTi 5.7 5 qtDiesel engine: API CF4 or ACEA
B3-96.98 or ACEA B3/E3-
96.98*3 for ZD30DDTi Without oil filter
ZD30DDTi 5.2 4-5/8 qt
Cooling system (with reservoir tank)
With front heater
ZD30DDTi M/T, A/TRHD 12.7 11-1/8 qt
Genuine Nissan Anti-freeze Coolant
(L2N) or equivalent*4 LHD 12.9 11-3/8 qt
Without front
heaterZD30DDTi M/T, A/TRHD 12.0 10-5/8 qt
LHD 12.2 10-3/4 qt
With rear heater
ZD30DDTi M/T, A/TRHD 13.8 12-1/8 qt
LHD 14.0 12-3/8 qt
Manual transmission Ð Ð API GL-4, Viscosity SAE 75W-90 only
Differential carrier gear oil (without limited slip differential) Ð Ð API GL-5*1
Transfer fluid
ÐÐGenuine Nissan ATF or equivalent*2 or
API GL-4*1
Automatic transmission fluid 11.8 10-3/8 qt Genuine Nissan ATF or equivalent*2
Power steering fluid Refill to the proper oil level
according to the instructions in
ªDo-it-yourself operationsº sec-
tion of the owner's manual.Type DEXRON
TMIII or equivalent
Brake and clutch fluid
DOT 3 or DOT 4 (U.S. FMVSS No.
116)*5
Multi-purpose grease Ð Ð NLGI No. 2 (Lithium soap base)
Propeller shaft greaseNLGI No. 2 (Molybdenum disulphide
lithium soap base)
Air conditioning system refrigerant Ð Ð HFC-134a (R-134a)
Air conditioning system lubricants
ÐÐNissan A/C System Oil Type S or
exact equivalent
*1: For further details, see ªSAE viscosity numberº.
*2: For more information regarding suitable fluids, contact a Nissan dealer for correct brands of DEXRON
TMIII/MERCONTMAutomatic Transmission Fluid.
*3: Never use API CG-4.
*4: Use Genuine Nissan Anti-freeze Coolant (L2N) or equivalent in its quality, in order to avoid possible aluminum corrosion within the engine cooling
system caused by the use of non-genuine engine coolant.
Note that any repairs for the incidents within the engine cooling system while using non-genuine engine coolant may not be covered by
the warranty even if such incidents occurred during the warranty period.
*5: Never mix DOT 3 & DOT 4.
RECOMMENDED FLUIDS AND LUBRICANTS
MA-1008

4. Remove water inlet and cylinder block drain plug located at
left center of cylinder block.
5. Remove reservoir tank (sides with pressure valve and with-
out pressure valve) and drain coolant.
ÐREFILLING ENGINE COOLANTÐ
6. Install reservoir tank, radiator drain plug, and cylinder block
drain plugs.
+Apply sealant to the thread of cylinder block drain plug.
Cylinder block drain plug:
:24-26Nzm (2.4 - 2.7 kg-m, 18 - 19 ft-lb)
Water inlet drain plug:
Height (H) mm (in): 5.0 - 7.8 (0.197 - 0.307)
7. Move heater TEMP control knob all the way to HOT.
8. Fill radiator with coolant up to the filler neck and install radia-
tor cap.
For coolant mixture ratio, refer to MA-1010.
9. Fill reservoir tank (with pressure valve) with coolant up to the
filler neck.
10. Fill reservoir tank with coolant up to the MAX level.
JMA107D
SMA108D
SMA182B
ENGINE MAINTENANCEZD
Changing Engine Coolant (Cont'd)
MA-1015