2003 NISSAN ALMERA N16 ecm

EC-406
[QG (WITHOUT EURO-OBD)]
INDEX FOR DTC
[QG (WITHOUT EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00KE0
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-492, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
×: Applicable —: Not applicable
Items
(CONSULT-II screen terms)DTC
*1
TripMI lighting
upReference page
CONSULT-
II
*2ECM*3
APP SEN 1/CIRC P0227 0227 1×EC-543
APP SEN 1/CIRC P0228 0228 1×EC-543
APP SEN 2/CIRC P1227 1227 1×EC-617
APP SEN 2/CIRC P1228 1228 1×EC-617
APP SENSOR P0226 0226 1×EC-536
BRAKE SW/CIRCUIT P1805 1805 1×EC-628
CAN COMM CIRCUIT*5U1000 1000 1×EC-492
CAN COMM CIRCUIT*5U1001 1001 2 —EC-492
CKP SEN/CIRCUIT P0335 0335 2×EC-554
CMP SEN/CIRC-B1 P0340 0340 2×EC-561
CTP LEARNING P1225 1225 2 —EC-613
CTP LEARNING P1226 1226 2 —EC-615
ECM P0605 0605 1 or 2× or —EC-568
ECM BACK UP/CIRC P1065 1065 2×EC-571
ECT SEN/CIRCUIT P0117 0117 2×EC-501
ECT SEN/CIRCUIT P0118 0118 2×EC-501
ENG OVER TEMP P1217 1217 1×EC-596
ETC ACTR P1121 1121 1 or 2×EC-575
ETC FUNCTION/CIRC P1122 1122 1×EC-578
ETC MOT P1128 1128 1×EC-591
ETC MOT PWR P1124 1124 1×EC-585
ETC MOT PWR P1126 1126 1×EC-585
HO2S1 (B1) P0132 0132 2×EC-506
HO2S1 (B1) P0134 0134 2×EC-512
HO2S2 (B1) P0138 0138 2×EC-518
KNOCK SEN/CIRC-B1 P0327 0327 2 —EC-550
KNOCK SEN/CIRC-B1 P0328 0328 2 —EC-550
MAF SEN/CIRCUIT P0102 0102 1×EC-495
MAF SEN/CIRCUIT P0103 0103 1×EC-495
NATS MALFUNCTIONP1610 -
P16151610 - 1615 2 —EC-431
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4—
Flashing*4EC-433

INDEX FOR DTC
EC-407
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
*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 trouble shooting for this DTC needs CONSULT-II.
DTC No. IndexEBS00KE1
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-492, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
×: Applicable —: Not applicable NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
SENSOR POWER/CIRC P1229 1229 1×EC-624
TP SEN 1/CIRC P0222 0222 1×EC-530
TP SEN 1/CIRC P0223 0223 1×EC-530
TP SEN 2/CIRC P1223 1223 1×EC-607
TP SEN 2/CIRC P1224 1224 1×EC-607
TP SENSOR P0221 0221 1×EC-524
Items
(CONSULT-II screen terms)DTC
*1
TripMI lighting
upReference page
CONSULT-
II
*2ECM*3
DTC*1Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
*2ECM*3
No DTC
Flashing*4NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.—
Flashing*4EC-433
U1000
1000*5CAN COMM CIRCUIT 1×EC-492
U1001
1001*5CAN COMM CIRCUIT 2 —EC-492
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.———
P0102 0102 MAF SEN/CIRCUIT 1×EC-495
P0103 0103 MAF SEN/CIRCUIT 1×EC-495
P0117 0117 ECT SEN/CIRCUIT 2×EC-501
P0118 0118 ECT SEN/CIRCUIT 2×EC-501
P0132 0132 HO2S1 (B1) 2×EC-506
P0134 0134 HO2S1 (B1) 2×EC-512
P0138 0138 HO2S2 (B1) 2×EC-518
P0221 0221 TP SENSOR 1×EC-524
P0222 0222 TP SEN 1/CIRC 1×EC-530
P0223 0223 TP SEN 1/CIRC 1×EC-530
P0226 0226 APP SENSOR 1×EC-536
P0227 0227 APP SEN 1/CIRC 1×EC-543
P0228 0228 APP SEN 1/CIRC 1×EC-543
P0327 0327 KNOCK SEN/CIRC-B1 2 —EC-550
P0328 0328 KNOCK SEN/CIRC-B1 2 —EC-550

EC-408
[QG (WITHOUT 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.P0335 0335 CKP SEN/CIRCUIT 2×EC-554
P0340 0340 CMP SEN/CIRC-B1 2×EC-561
P0605 0605 ECM 1 or 2× or —EC-568
P1065 1065 ECM BACK UP/CIRC 2×EC-571
P1121 1121 ETC ACTR 1 or 2×EC-575
P1122 1122 ETC FUNCTION/CIRC 1×EC-578
P1124 1124 ETC MOT PWR 1×EC-585
P1126 1126 ETC MOT PWR 1×EC-585
P1128 1128 ETC MOT 1×EC-591
P1217 1217 ENG OVER TEMP 1×EC-596
P1223 1223 TP SEN 2/CIRC 1×EC-607
P1224 1224 TP SEN 2/CIRC 1×EC-607
P1225 1225 CTP LEARNING 2 —EC-613
P1226 1226 CTP LEARNING 2 —EC-615
P1227 1227 APP SEN 2/CIRC 1×EC-617
P1228 1228 APP SEN 2/CIRC 1×EC-617
P1229 1229 SENSOR POWER/CIRC 1×EC-624
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 —EC-431
P1805 1805 BRAKE SW/CIRCUIT 1×EC-628
DTC*1Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
*2ECM*3

PRECAUTIONS
EC-409
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00KE2
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
●To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
On Board Diagnostic (OBD) System of EngineEBS00KE3
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
●Be sure to turn the ignition switch OFF and disconnect the battery ground cable before any repair
or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MI to light up.
●Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
●Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to EL-7.
●Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.
●Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.
●Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.
PrecautionEBS00KE4
●Always use a 12 volt battery as power source.
●Do not attempt to disconnect battery cables while engine is
running.
●Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
●Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

EC-410
[QG (WITHOUT 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 a lever as far as it 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-458, "
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

PRECAUTIONS
EC-411
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
●After performing each TROUBLE DIAGNOSIS, perform
“DTC Confirmation Procedure” or “Overall Function
Check”.
The DTC should not be displayed in the “DTC Confirmation
Procedure” if the repair is completed. The “Overall Func-
tion Check” should be a good result if the repair is com-
pleted.
●When measuring ECM signals with a circuit tester, connect
a break-out box (SST) and Y-cable adapter (SST) between
the ECM and ECM harness connector.
●When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
●Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
●Do not operate fuel pump when there is no fuel in lines.
●Tighten fuel hose clamps to the specified torque.
SAT652J
SEF348N
MBIB0046E

PREPARATION
EC-413
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
PREPARATIONPFP:00002
Special Service ToolsEBS00KE6
Commercial Service ToolsEBS00KE7
Tool number
Tool nameDescription
KV10117100
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
KV10114400
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)
KV109E0010
Break-out boxMeasuring ECM signals with a circuit tester
KV109E0080
Y-cable adapterMeasuring ECM signals with a circuit tester
S-NT379
S-NT636
S-NT825
S-NT826
Tool name Description
Quick connector
releaseRemoving fuel tube quick connectors in engine
room
(Available in SEC. 164 of PARTS CATALOG: Part
No. 16441 6N210)
Fuel filler cap adapter Checking fuel tank vacuum relief valve opening
pressure
PBIC0198E
S-NT653

ENGINE CONTROL SYSTEM
EC-417
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
System ChartEBS00KEB
*1: This sensor is not used to control the engine system under normal conditions.
*2: The signals are sent to the ECM through CAN communication line.
*3: The output signals are sent from the ECM through CAN communication line.
Multiport Fuel Injection (MFI) SystemEBS00KEC
INPUT/OUTPUT SIGNAL CHART
*1: Under normal conditions, this sensor is not for engine control operation.
*2: This signal is sent to the ECM through CAN communication line.
*3: The ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
Input (Sensor) ECM Function Output (Actuator)
●Camshaft position sensor (PHASE)
●Crankshaft position sensor (POS)
●Mass air flow sensor
●Engine coolant temperature sensor
●Heated oxygen sensor 1
●Throttle position sensor
●Accelerator pedal position sensor
●Park/neutral position (PNP) switch
●Intake air temperature sensor
●Power steering pressure sensor
●Ignition switch
●Stop lamp switch
●Battery voltage
●Knock sensor
●Refrigerant pressure sensor
●Heated oxygen sensor 2*1
●TCM (Transmission control module)*2
●Air conditioner switch*2
●Vehicle speed signal*2
●Electrical load signal*2
Fuel injection & mixture ratio control Fuel injectors
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
On board diagnostic system
MI (On the instrument panel)
*3
Intake valve timing controlIntake valve timing control solenoid
valve
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control
Air conditioner relay
*3
Cooling fan control
Cooling fan relays*3
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
*3 and piston position
Fuel injection & mix-
ture ratio controlFuel injectors Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage
*3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2
*1Density of oxygen in exhaust gas
Vehicle speed signal
*2Vehicle speed
Air conditioner switch
*2Air conditioner operation