1999 NISSAN PRIMERA heater

FUNCTION

The TCU has the following control functions.
Item Details of control
Direction indicatorsSwitches the director indicators (Left, Right or All) when the combination switch or
hazard switch is operated.
Trailer direction indicator buzzer Sounds a buzzer during direction indicator operation when towing a trailer.
Light warning buzzerSounds warning buzzer when driver’s door is opened with light switch in the 1st or
2nd position and ignition switch“OFF”.
Ignition key warning buzzerSounds warning buzzer when driver’s door is opened with key in ignition and the
driver door lock knob is moved from the“unlock”position to the“lock”position.
Rear window defogger timerTurn off rear window defogger and door mirror heater, if equipped, about 15 minutes
after the rear window defogger switch is turned“ON”.
Battery saverShuts off interior lamp in 30 minutes if any door is left open when ignition switch is
“OFF”. The battery saver will reset if ignition switch is cycled or any door is opened
or closed.
Interior lamp timerKeep interior lamp illuminated for about 30 seconds when:

driver’s door is unlocked,

the ignition is switched off,

driver’s door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:

driver’s door is locked, or

ignition switch is turned“ON”.
Theft warning
systemNormal operationMonitors doors, hood, boot lid, door locks, volumetric sensors (if not excluded), igni-
tion and glass break sensors (wagon) when armed.
Flashes the direction indicators and sounds the horn for 30 seconds in case one of
the monitored sensors is triggered.
Diagnostic mode Indicates the last three alarm triggers by flashing the direction indicators.
Central door lock Centrally locks and unlocks the vehicle
Super lock Activates and de-activates the super lock system.
TIME CONTROL UNIT (TCU)
System Description (Cont’d)
EL-307

Removal and InstallationNCEM0024CAUTION:
IWhen installing sliding parts such as bearings and
pistons, apply engine oil on the sliding surfaces.
IPlace removed parts, such as bearings and bearing caps,
in their proper order and direction.
IWhen installing connecting rod nuts and main bearing cap
bolts, apply new engine oil to threads and seating sur-
faces.
IDo not allow any magnetic materials to contact the signal
plate teeth of flywheel or drive plate, and rear plate.
IRemove the crankshaft position sensor (POS).
IBe careful not to damage sensor edges and single plate
teeth.
DisassemblyNCEM0025PISTON AND CRANKSHAFTNCEM0025S011. Place engine on a work stand.
2. Drain coolant and oil.
3. Remove timing chain.
Refer to EM-20.
4. Remove pistons with connecting rod.
IWhen disassembling piston and connecting rod, remove snap
ring first. Then heat piston to 60 to 70ÉC (140 to 158ÉF) or use
piston pin press stand at room temperature.
CAUTION:
IWhen piston rings are not replaced, make sure that piston
rings are mounted in their original positions.
IWhen replacing piston rings, if there is no punch mark,
install with either side up.
5. Loosen main bearing caps in numerical order as shown in fig-
ure.
6. Remove bearing caps, main bearings and crankshaft.
IBefore removing bearing caps, measure crankshaft end
play. Refer to EM-61.
IBolts should be loosened in two or three steps.
SEM927F KV10106500
ST0501S000
KV10113300
SEM877B OilPiston heater
SEM165DB Front
CYLINDER BLOCKQG
Removal and Installation
EM-53

17. Remove camshaft brackets and camshafts.
IMark these parts' original positions for reassembly.
18. Remove starter motor.
19. Remove the following water hoses:
IWater hose for cylinder block.
IWater hoses for heater.
20. Remove cylinder head outside bolts.
21. Remove cylinder head bolts in numerical order.
IRemoving bolts in incorrect order could result in a warped
or cracked cylinder head.
ILoosen cylinder head bolts in two or three steps.
22. Remove cylinder head completely with intake and exhaust
manifolds.
Disassembly
CAUTION:
IWhen installing camshafts, chain tensioners, oil seals or
other sliding parts, lubricate contacting surfaces with new
engine oil.
IWhen tightening cylinder head bolts, camshaft sprocket
bolts, cramshaft pulley bolt and seat surfaces, lubricate
with new engine oil.
IIf a hydraulic lash adjuster is kept on its side, there is a
risk of air entering it. After removal, always set hydraulic
SEM035G Engine
frontRH camshaft
Camshaft bracket
LH camshaft
Loosen in numerical order.
SEM036G
SEM037G Water outletWater inlet
SEM978C
SEM878CA OK
NG
CYLINDER HEADSR20DE
Removal (Cont'd)
EM-89

Tightening torque N×m (kg-m, ft-lb)
a. 39 (4.0, 29)
b. 78 (8.0, 58)
c. 0 (0, 0)
d. 39 (4.0, 29)
e. 90 - 95 degrees (90 degrees preferred)
f. 90 - 95 degrees (90 degrees preferred)
4. Install cylinder head outside bolts.
5. Install the following water hoses:
IWater hose for cylinder block.
IWater hoses for heater.
6. Install starter motor.
7. Remove old liquid gasket from mating surface of LH camshaft
end bracket.
IAlso remove old liquid gasket from mating surface of cyl-
inder head.
8. Apply liquid gasket to mating surface of LH camshaft end
bracket as shown in illustration.
IUse Genuine RTV silicone sealant part No. 999MP-A7007
or equivalent.
9. Install camshafts, camshaft brackets.
IPosition camshaft.
ILH camshaft key at about 12 o'clock.
IRH camshaft key at about 10 o'clock.
Apply new engine oil to bearing and cam surfaces of cam-
shafts before installing them.
AEM113
N´m (kg-m, ft-lb)
11 8
(12, 87)
78
(8, 58)
39
(4, 29)Plastic zone
Elastic zone
SEM037G Water outletWater inlet
SEM036G
BEM004 Apply liquid gasket to the
shaded area.
LH camshaft end bracket
SEM045G RH camshaft key
LH camshaft key
CYLINDER HEADSR20DE
Installation (Cont'd)
EM-101

CAUTION:
IWhen installing sliding parts (bearings, pistons, etc.),
apply new engine oil to the sliding surfaces.
IPlace removed parts such as bearings and bearing caps
in their correct order and direction.
IWhen installing connecting rod nuts and main bearing cap
bolts, apply new engine oil to threads and seating sur-
faces.
IDo not allow any magnetic materials to contact the ring
gear teeth of flywheel/drive plate.
Disassembly
PISTON AND CRANKSHAFT
1. Place engine on a work stand.
2. Remove cylinder head.
Refer to ªRemovalº in ªCYLINDER HEADº (EM-87).
3. Remove oil pan.
Refer to ªRemovalº in ªOIL PANº (EM-70).
4. Remove timing chain.
Refer to ªRemovalº in ªTIMING CHAINº (EM-76).
5. Remove pistons with connecting rods.
IWhen disassembling piston and connecting rod, remove snap
ring first. Then heat piston to 60 to 70ÉC (140 to 158ÉF), or use
piston pin press stand at room temperature.
6. Remove rear oil seal retainer.
7. Remove bearing caps and crankshaft in numerical order as
shown in the figure.
IBefore removing bearing cap, measure crankshaft end
play.
IBolts should be loosened in two or three steps.
Inspection
PISTON AND PISTON PIN CLEARANCE
1. Measure inner diameter of piston pin hole ªdpº.
Standard diameter ªdpº:
21.993 - 22.005 mm (0.8659 - 0.8663 in)
SEM141FA
: N´m (kg-m, ft-lb)
25-34
(2.5 -3.5,
18 - 25)
Spacer
[5 mm (0.20 in)
thickness]
25-34
(2.5 - 3.5, 18 - 25)
SEM877B Piston heater
Oil
NEM150 Front
p2
p1
p4
p3
p8
p7
p10
p9
p6
p5
AEM023
CYLINDER BLOCKSR20DE
Components (Cont'd)
EM-110

Preparation
IDrill a hole into the attachment (KV10108101).
Disassembly
PISTON AND CRANKSHAFT
1. Place engine on a work stand.
2. Drain coolant and oil.
3. Remove timing belt.
4. Remove water pump.
5. Remove oil pan and oil pump.
6. Remove cylinder head.
7. Remove pistons with connecting rods.
When disassembling piston and connecting rod, heat piston
to 60 to 70ÉC (140 to 158ÉF) or use piston pin press stand at
room temperature.
8. Remove main bearing cap and crankshaft.
Place the bearings and caps in their proper order.
Upper bearings (cylinder block side) have oil groove.
9. Remove piston rings with a tool.
SEM707D
SEM895
SEM360D Piston with connecting rod
Heater
SEM359F Engine front
Loosen in numerical order
SEM291
CYLINDER BLOCKCD20T
Preparation
EM-167

lWear protective clothing, including impervious gloves where
practicable.
lDo not put oily rags in pockets.
lAvoid contaminating clothes, particularly underpants, with oil.
lHeavily soiled clothing and oil-impregnated footwear should
not be worn. Overalls must be cleaned regularly.
lFirst Aid treatment should be obtained immediately for open
cuts and wounds.
lUse barrier creams, applying them before each work period,
to help the removal of oil from the skin.
lWash with soap and water to ensure all oil is removed (skin
cleansers and nail brushes will help). Preparations contain-
ing lanolin replace the natural skin oils which have been
removed.
lDo not use gasoline, kerosine, diesel fuel, gas oil, thinners
or solvents for cleaning skin.
lIf skin disorders develop, obtain medical advice without
delay.
lWhere practicable, degrease components prior to handling.
lWhere there is a risk of eye contact, eye protection should
be worn, for example, chemical goggles or face shields; in
addition an eye wash facility should be provided.
ENVIRONMENTAL PROTECTION PRECAUTIONS
Burning used engine oil in small space heaters or boilers can be
recommended only for units of approved design. The heating
system must meet the requirements of HM Inspectorate of Pol-
lution for small burners of less than 0.4 MW. If in doubt check
with the appropriate local authority and/or manufacturer of the
approved appliance.
Dispose of used oil and used oil filters through authorized waste
disposal contractors to licensed waste disposal sites, or to the
waste oil reclamation trade. If in doubt, contact the local author-
ity for advice on disposal facilities.
It is illegal to pour used oil on to the ground, down sewers or
drains, or into water courses.
The regulations concerning the pollution of the environment
will vary between regions.
Precautions for Fuel
GASOLINE ENGINE:
Unleaded gasoline of at least 95 octane (RON)
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will dam-
age the catalytic converter.
DIESEL ENGINE*:
Diesel fuel of at least 50 cetane
* If two types of diesel fuel are available, use summer or win-
ter fuel properly according to the following temperature con-
ditions.
lAbove þ7ÉC (20ÉF) ... Summer type diesel fuel.
lBelow þ7ÉC (20ÉF) ... Winter type diesel fuel.
PRECAUTIONS
Precautions for Engine Oils (Cont'd)
GI-7

Wiring Diagram Codes (Cell Codes)
Use the chart below to find out what each wiring diagram code
stands for.
Code Section Wiring Diagram Name
AAC/V EC IACV-AAC Valve
ABS BR Anti-lock Brake System
ACL/SW EC Accelerator Position Switch
ADJRES EC Adjustment Resistor
A/C HA Manual Air Conditioner
A/CCUT EC Air Conditioner Cut Control
ACC/SW EC Accelerator Switch (FC)
A/T AT Automatic Transmission
AIM EL Headlamp Aiming Control
APS EC Accelerator Position Sensor
AIRREG EC IACV-Air Regulator
AT/C EC A/T Control
AUDIO EL Audio
BACK/L EL Back-up Lamp
BUZZER EL Warning Buzzer
CHARGE EL Charging System
CKPS EC Crankshaft Position Sensor
CHIME EL Warning Chime
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
CSPS EC Control Sleeve Position Sensor
DTRL ELHeadlamp Ð With Daytime Light
System
DEF EL Rear Window Defogger
D/LOCK EL Power Door Lock
DTRL ELHeadlamp Ð With Daytime Light
System
ECTS ECEngine Coolant Temperature
Sensor
EGRC/V ECEGR and canister Control Solenoid
Valve
FCUT EC Fuel Cut Solenoid Valve
F/FOG EL Front Fog Lamp
FICD EC IACV-FICD Solenoid Valve
F/PUMP EC Fuel Pump
FTS EC Fuel Temperature Sensor
GLOW EC Quick-glow system
GOVNR EC Electric Governor
H/LAMP ELHeadlamp Ð Without Daytime
Light System
H/SEAT EL Heated Seat
HEAT HA Heater
HLC EL Headlamp Washer
HO2S EC Heated Oxygen Sensor
HORN EL Horn, Cigarette Lighter, Clock
IATS EC Intake Air Temperature Sensor
IGN/SG EC Ignition SignalCode Section Wiring Diagram Name
ILL EL Illumination
INJECT EC Injector
INT/L ELInterior, Spot and Trunk Room
Lamps
KS EC Knock Sensor
LOAD EC Load Signal
LKUP ECTorque Converter Clutch Solenoid
Valve
LOAD EC Load Signal
MAFS EC Mass Air Flow Sensor
MAIN ECMain Power Supply and Ground
Circuit
METER ELSpeedometer, Tachometer, Temp.
and Fuel Gauges
MI EC Malfunction Indicator
MIRROR EL Door Mirror
NATS EL Nissan Anti-Theft System
NLS EC Needle Lift Sensor
O2S EC Oxygen Sensor
PGC/V ECEVAP Canister Purge Control
Solenoid Valve
PLA EC Partial Load Advance Control
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW ECPower Steering Oil Pressure
Switch
R/FOG EL Rear Fog Lamp
SROOF EL Sun Roof
SRS RS Supplemental Restraint System
S/LOCK EL Power Door Lock Ð Super Lock
S/SIG EC Start Signal
START EL Starting System
STOP/L EL Stop Lamp
TAIL/L ELClearance, License, and Tail
Lamps
TCV EC Injection Timing Control Valve
TPS EC Throttle Position Sensor
TURN ELTurn Signal and Hazard Warning
Lamps
VSS EC Vehicle Speed Sensor
VTC EC VTC Solenoid Valve
WARN EL Warning Lamps
WINDOW EL Power Window
WIPER EL Front Wiper and Washer
WIP/R EL Rear Wiper and Washer
HOW TO READ WIRING DIAGRAMS
GI-20