2003 NISSAN ALMERA N16 iat

— FLUSHING COOLING SYSTEM —NJLC0079S031. Open air relief plug.
2. Fill radiator with water until water spills from the air relief hole,
then close air relief plug. Fill radiator and reservoir tank with
water and reinstall radiator cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water.
7. Repeat steps 1 through 6 until clear water begins to drain from
radiator.
GI
MA
EM
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE COOLING SYSTEMYD
Changing Engine Coolant (Cont’d)
LC-45

Radiator (Aluminum type)=NJLC0082Refer to LC-20, “Radiator (Aluminum type)”.
Overheating Cause AnalysisNJLC0070
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or
paper clogging
Mechanical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
—— High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper coolant mixture
ratio———
Poor coolant quality — — —
Insufficient coolantCoolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, dete-
rioration or improper fit-
ting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deteriora-
tion
Cylinder head gasket
deterioration
ENGINE COOLING SYSTEMYD
Radiator (Aluminum type)
LC-46

Symptom Check items
Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh engine rpm under
no load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system malfunc-
tion
— Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or
paper clogging
Blocked radiator —
Blocked condenser
—
Installed large fog lamp
Service Data and Specifications (SDS)
THERMOSTATNJLC0071
Valve opening temperature Above 80.5 - 83.5°C (177 - 182°F)
Valve liftMore than 9.0 mm/95°C (0.354 in/203°F)
RADIATORNJLC0073Unit: kPa (bar, kg/cm2, psi)
Cap relief pressureStandard 78 - 98 (0.78 - 0.98, 0.8 - 1.0, 11 - 14)
Limit 59 - 98 (0.59 - 0.98, 0.6 - 1.0, 9 - 14)
Leakage test pressure157 (1.57, 1.6, 23)
ENGINE COOLANT CAPACITYNJLC0080Unit:(Imp qt)
With reservoir tank8.7 (7-5/8)
Reservoir tank0.7 (5/8)
GI
MA
EM
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE COOLING SYSTEMYD
Overheating Cause Analysis (Cont’d)
LC-47

EC-2
DTC P0031, P0032 HO2S1 HEATER .....................122
Description ............................................................122
CONSULT-II Reference Value in Data Monitor Mode
.122
On Board Diagnosis Logic ....................................122
DTC Confirmation Procedure ...............................122
Wiring Diagram .....................................................124
Diagnostic Procedure ...........................................125
Component Inspection ..........................................127
Removal and Installation ......................................127
DTC P0037, P0038 HO2S2 HEATER .....................128
Description ............................................................128
CONSULT-II Reference Value in Data Monitor Mode
.128
On Board Diagnosis Logic ....................................128
DTC Confirmation Procedure ...............................128
Wiring Diagram .....................................................130
Diagnostic Procedure ...........................................131
Component Inspection ..........................................133
Removal and Installation ......................................133
DTC P0102, P0103 MAF SENSOR .........................134
Component Description ........................................134
CONSULT-II Reference Value in Data Monitor Mode
.134
On Board Diagnosis Logic ....................................134
DTC Confirmation Procedure ...............................135
Wiring Diagram .....................................................136
Diagnostic Procedure ...........................................137
Component Inspection ..........................................139
Removal and Installation ......................................139
DTC P0112, P0113 IAT SENSOR ...........................140
Component Description ........................................140
On Board Diagnosis Logic ....................................140
DTC Confirmation Procedure ...............................140
Wiring Diagram .....................................................141
Diagnostic Procedure ...........................................142
Component Inspection ..........................................143
Removal and Installation ......................................143
DTC P0117, P0118 ECT SENSOR ..........................144
Component Description ........................................144
On Board Diagnosis Logic ....................................144
DTC Confirmation Procedure ...............................145
Wiring Diagram .....................................................146
Diagnostic Procedure ...........................................147
Component Inspection ..........................................148
Removal and Installation ......................................148
DTC P0132 HO2S1 .................................................149
Component Description ........................................149
CONSULT-II Reference Value in Data Monitor Mode
.149
On Board Diagnosis Logic ...................................
.149
DTC Confirmation Procedure ...............................150
Wiring Diagram .....................................................151
Diagnostic Procedure ...........................................152
Component Inspection ..........................................153
Removal and Installation ......................................154
DTC P0133 HO2S1 .................................................155
Component Description ........................................155
CONSULT-II Reference Value in Data Monitor Mode .155
On Board Diagnosis Logic ....................................155
DTC Confirmation Procedure ................................156
Overall Function Check .........................................157
Wiring Diagram .....................................................158
Diagnostic Procedure ............................................159
Component Inspection ..........................................162
Removal and Installation .......................................164
DTC P0134 HO2S1 ................................................ .165
Component Description ........................................165
CONSULT-II Reference Value in Data Monitor Mode
.165
On Board Diagnosis Logic ....................................165
DTC Confirmation Procedure ................................166
Overall Function Check .........................................166
Wiring Diagram .....................................................168
Diagnostic Procedure ............................................169
Component Inspection ..........................................170
Removal and Installation .......................................171
DTC P0138 HO2S2 ................................................ .172
Component Description ........................................172
CONSULT-II Reference Value in Data Monitor Mode
.172
On Board Diagnosis Logic ....................................172
DTC Confirmation Procedure ................................173
Wiring Diagram .....................................................174
Diagnostic Procedure ............................................175
Component Inspection ..........................................176
Removal and Installation .......................................177
DTC P0139 HO2S2 ................................................ .178
Component Description ........................................178
CONSULT-II Reference Value in Data Monitor Mode
.178
On Board Diagnosis Logic ....................................178
DTC Confirmation Procedure ................................179
Overall Function Check .........................................180
Wiring Diagram .....................................................181
Diagnostic Procedure ............................................182
Component Inspection ..........................................184
Removal and Installation ......................................
.185
DTC P0171 FUEL INJECTION SYSTEM FUNCTION .186
On Board Diagnosis Logic ....................................186
DTC Confirmation Procedure ................................186
Wiring Diagram .....................................................188
Diagnostic Procedure ............................................189
DTC P0172 FUEL INJECTION SYSTEM FUNCTION .193
On Board Diagnosis Logic ....................................193
DTC Confirmation Procedure ................................193
Wiring Diagram .....................................................195
Diagnostic Procedure ............................................196
DTC P0221 TP SENSOR ........................................199
Component Description ........................................199
CONSULT-II Reference Value in Data Monitor Mode
.199
On Board Diagnosis Logic ....................................199
DTC Confirmation Procedure ................................199
Wiring Diagram .....................................................201
Diagnostic Procedure ............................................202

EC-8
Wiring Diagram .....................................................625
Diagnostic Procedure ...........................................626
DTC P1805 BRAKE SWITCH .................................628
Description ............................................................628
CONSULT-II Reference Value in Data Monitor Mode
.628
On Board Diagnosis Logic ....................................628
DTC Confirmation Procedure ...............................628
Wiring Diagram .....................................................629
Diagnostic Procedure ...........................................630
Component Inspection ..........................................632
HO2S1 HEATER .....................................................633
Description ............................................................633
CONSULT-II Reference Value in Data Monitor Mode
.633
Wiring Diagram .....................................................634
Diagnostic Procedure ...........................................635
Component Inspection ..........................................637
Removal and Installation ......................................637
HO2S2 HEATER .....................................................638
Description ............................................................638
CONSULT-II Reference Value in Data Monitor Mode
.638
Wiring Diagram .....................................................639
Diagnostic Procedure ...........................................640
Component Inspection ..........................................642
Removal and Installation ......................................642
IAT SENSOR ...........................................................643
Component Description ........................................643
Wiring Diagram .....................................................644
Diagnostic Procedure ...........................................645
Component Inspection ..........................................646
Removal and Installation ......................................646
HO2S1 .....................................................................647
Component Description ........................................647
CONSULT-II Reference Value in Data Monitor Mode
.647
Wiring Diagram .....................................................648
Diagnostic Procedure ...........................................649
Component Inspection ..........................................652
Removal and Installation ......................................653
HO2S2 .....................................................................654
Component Description ........................................654
CONSULT-II Reference Value in Data Monitor Mode
.654
Wiring Diagram .....................................................655
Diagnostic Procedure ...........................................656
Component Inspection ..........................................658
Removal and Installation ......................................659
IGNITION SIGNAL ..................................................660
Component Description ........................................660
Wiring Diagram .....................................................661
Diagnostic Procedure ...........................................664
Component Inspection ..........................................668
Removal and Installation ......................................669
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE .................................................670
Description ............................................................670
CONSULT-II Reference Value in Data Monitor Mode .670
Wiring Diagram .....................................................671
Diagnostic Procedure ............................................673
Component Inspection ..........................................676
Removal and Installation .......................................676
VSS ..........................................................................677
Description ............................................................677
Diagnostic Procedure ............................................677
POWER STEERING PRESSURE SENSOR ...........678
Component Description ........................................678
CONSULT-II Reference Value in Data Monitor Mode
.678
Wiring Diagram .....................................................679
Diagnostic Procedure ............................................680
Component Inspection ..........................................682
IVT CONTROL SOLENOID VALVE ........................683
Description ............................................................683
CONSULT-II Reference Value in Data Monitor Mode
.683
Wiring Diagram .....................................................685
Diagnostic Procedure ............................................686
Component Inspection ..........................................688
Removal and Installation .......................................688
PNP SWITCH ..........................................................689
Component Description ........................................689
CONSULT-II Reference Value in Data Monitor Mode
.689
Wiring Diagram .....................................................690
Diagnostic Procedure ............................................691
INJECTOR CIRCUIT ...............................................693
Component Description ........................................693
CONSULT-II Reference Value in Data Monitor Mode
.693
Wiring Diagram .....................................................694
Diagnostic Procedure ............................................695
Component Inspection ..........................................698
Removal and Installation ......................................
.698
FUEL PUMP CIRCUIT .............................................699
Description ............................................................699
CONSULT-II Reference Value in Data Monitor Mode
.699
Wiring Diagram .....................................................700
Diagnostic Procedure ............................................701
Component Inspection ..........................................703
Removal and Installation .......................................704
REFRIGERANT PRESSURE SENSOR ..................705
Component Description ........................................705
Wiring Diagram .....................................................706
Diagnostic Procedure ............................................707
Removal and Installation .......................................709
ELECTRICAL LOAD SIGNAL ................................710
Description ............................................................710
CONSULT-II Reference Value in Data Monitor Mode
.710
Wiring Diagram .....................................................711
Diagnostic Procedure ............................................712
MI & DATA LINK CONNECTORS ...........................715
Wiring Diagram—LHD Models ..............................715
Wiring Diagram—RHD Models .............................716

INDEX FOR DTC
EC-11
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
ECHO2S1 (B1) P0133 0133 2×EC-155
HO2S1 (B1) P0134 0134 2×EC-165
HO2S1 (B1) P1143 1143 2×EC-296
HO2S1 (B1) P1144 1144 2×EC-302
HO2S1 HTR (B1) P0031 0031 2×EC-122
HO2S1 HTR (B1) P0032 0032 2×EC-122
HO2S2 (B1) P0138 0138 2×EC-172
HO2S2 (B1) P0139 0139 2×EC-178
HO2S2 (B1) P1146 1146 2×EC-308
HO2S2 (B1) P1147 1147 2×EC-316
HO2S2 HTR (B1) P0037 0037 2×EC-128
HO2S2 HTR (B1) P0038 0038 2×EC-128
IAT SEN/CIRCUIT P0112 0112 2×EC-140
IAT SEN/CIRCUIT P0113 0113 2×EC-140
INT/V TIM CONT-B1 P0011 0011 2 –EC-119
INT/V TIM V/CIR-B1 P1111 1111 2×EC-272
KNOCK SEN/CIRC-B1 P0327 0327 2 –EC-230
KNOCK SEN/CIRC-B1 P0328 0328 2 –EC-230
L/PRESS SOL/CIRC P0745 0745 2×AT- 1 6 4
MAF SEN/CIRCUIT P0102 0102 1×EC-134
MAF SEN/CIRCUIT P0103 0103 1×EC-134
MULTI CYL MISFIRE P0300 0300 2×EC-225
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 –EC-49
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4–
Flashing*4EC-50
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000––—
O/R CLTCH SOL/CIRC P1760 1760 2×AT- 1 8 7
PNP SW/CIRC P0705 0705 2×AT- 111
P-N POS SW/CIRCUIT P1706 1706 2×EC-356
PURG VOLUME CONT/V P0444 0444 2×EC-251
PW ST P SEN/CIRC P0550 0550 2 –EC-260
SENSOR POWER/CIRC P1229 1229 1×EC-352
SFT SOL A/CIRC P0750 0750 1×AT- 1 7 1
SFT SOL B/CIRC P0755 0755 1×AT- 1 7 6
TCC SOLENOID/CIRC P0740 0740 2×AT- 1 5 9
TP SEN 1/CIRC P0222 0222 1×EC-205
TP SEN 1/CIRC P0223 0223 1×EC-205
TP SEN 2/CIRC P1223 1223 1×EC-335
TP SEN 2/CIRC P1224 1224 1×EC-335
TP SENSOR P0221 0221 1×EC-199
TPV SEN/CIRC A/T P1705 1705 1×AT- 1 8 1
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

EC-12
[QG (WITH EURO-OBD)]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: The troubleshooting for this DTC needs CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur, the MI illuminates.
DTC No. IndexEBS00K2U
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the “Type approval number” on the
identification plate. Refer to GI-39.
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-116, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
×: Applicable –: Not applicable TW CATALYST SYS-B1 P0420 0420 2×EC-246
VEH SPD SEN/CIR AT*6P0720 0720 2×AT-123
VEH SPEED SEN/CIRC P0500 0500 2×EC-257
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
No DTC
Flashing*4NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.–
Flashing*4EC-50
U1000
1000*5CAN COMM CIRCUIT 1×EC-116
U1001
1001*5CAN COMM CIRCUIT 2 –EC-116
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.––—
P0011 0011 INT/V TIM CONT-B1 2 –EC-119
P0031 0031 HO2S1 HTR (B1) 2×EC-122
P0032 0032 HO2S1 HTR (B1) 2×EC-122
P0037 0037 HO2S2 HTR (B1) 2×EC-128
P0038 0038 HO2S2 HTR (B1) 2×EC-128
P0102 0102 MAF SEN/CIRCUIT 1×EC-134
P0103 0103 MAF SEN/CIRCUIT 1×EC-134
P0112 0112 IAT SEN/CIRCUIT 2×EC-140
P0113 0113 IAT SEN/CIRCUIT 2×EC-140
P0117 0117 ECT SEN/CIRCUIT 1×EC-144
P0118 0118 ECT SEN/CIRCUIT 1×EC-144
P0132 0132 HO2S1 (B1) 2×EC-149
P0133 0133 HO2S1 (B1) 2×EC-155
P0134 0134 HO2S1 (B1) 2×EC-165
P0138 0138 HO2S2 (B1) 2×EC-172
P0139 0139 HO2S2 (B1) 2×EC-178
P0171 0171 FUEL SYS-LEAN-B1 2×EC-186
P0172 0172 FUEL SYS-RICH-B1 2×EC-193
P0221 0221 TP SENSOR 1×EC-199

EC-16
[QG (WITH EURO-OBD)]
PRECAUTIONS
●Do not disassemble ECM.
●If battery cable is disconnected, the memory will return to
the initial ECM values.
The ECM will now start to self-control at its initial values.
Engine operation can vary slightly when the cable is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.
●When connecting ECM harness connector, fasten it
securely with levers as far as they will go as shown at right.
●When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
●Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.
●Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.
●Keep engine control system parts and harness dry.
●Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer to EC-80, "
ECM Terminals and Reference Value" .
●Handle mass air flow sensor carefully to avoid damage.
●Do not disassemble mass air flow sensor.
●Do not clean mass air flow sensor with any type of deter-
gent.
●Do not disassemble electric throttle control actuator.
●Even a slight leak in the air intake system can cause seri-
ous incidents.
●Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
PBIB1164E
MBIB0145E
PBIB0090E
MEF040D