2016 NISSAN NOTE ECU

ENGINE UNITEM-91
< UNIT DISASSEMBLY AND ASSEMBLY > [HR16DE]
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UNIT DISASSEMBLY AND ASSEMBLY
ENGINE UNIT
SettingINFOID:0000000012431733
NOTE:
The following procedures explain how to disassemble the engine with the engine stand fastened to the bell
housing. Some steps may be different if using a different type of engine stand.
1. Install engine to engine stand:
a. On (M/T models), remove flywheel.
• Secure flywheel using suitable tool and remove bolts.
CAUTION:
• Do not disassemble flywheel.
• Do not place flywheel with signal plate facing down.
• When handling signal plate, take care not to damage or scratch it.
• Handle signal plate in a manner that prevents it from becoming magnetized.
b. On (CVT models), remove driveplate. • Secure driveplate using suitable tool and remove bolts.
CAUTION:
• Do not disassemble flywheel.
• Do not place flywheel or drive plat e with signal plate facing down.
• When handling signal plate, take care not to damage or scratch it.
• Handle signal plate in a manner that prevents it from becoming magnetized.
c. Lift the engine with a hoist to install it onto a widely used engine stand. CAUTION:
• Use the engine stand that has a load capacity approximately 150 kg (331 lb) or more large
enough for supporting the engine weight.
• If the load capacity of stand is not adequate, remove the following parts beforehand to reduce the poten- tial risk of overturning stand.
- Intake manifold. Refer to EM-28, "
Exploded View".
- Exhaust manifold. Refer to EM-31, "
Removal and Installation".
- Rocker cover. Refer to EM-48, "
Exploded View".
CAUTION:
Before removing the hanging chains, check the engine stand is stable and there is no risk of over-
turning.
NOTE:
The figure shows an example of widely used engine stand (A)
that can support the mating surface of transaxle with flywheel
removed.
2. Drain engine oil. Refer to LU-8, "
Draining".
CAUTION:
• Be sure to clean drain plug and in stall with new drain plug washer.
• Do not reuse drain plug washer. Tool number : KV11105210 (J-44716)
Tool number : KV11105210 (J-44716)
PBIC3227J
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2016 Versa Note

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CYLINDER BLOCKEM-101
< UNIT DISASSEMBLY AND ASSEMBLY > [HR16DE]
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Install the rear oil seal after installing the oil pan (upper).
17. Install rear oil seal. Refer to EM-74, "
REAR OIL SEAL : Removal and Installation".
18. Install flywheel (M/T models) or drive plate (CVT models).
M/T models
• Secure crankshaft with a stopper plate and tighten bolts crosswise over several times.
CVT models
• Secure crankshaft with a stopper plate and tighten bolts crosswise over several times.
CAUTION:
Do not damage or scratch and contact surface for clutch disc of flywheel.
19. Install knock sensor (1).
• Install connectors so that they are positioned toward the rearof the engine.
CAUTION:
• Do not tighten bolt while holding the connector.
• If any impact by dropping is applied to knock sensor,
replace it with a new one.
NOTE:
• Check that there is no foreign material on the cylinder block
mating surface and the back surface of knock sensor.
• Check that knock sensor does not interfere with other parts.
20. Install crankshaft position sensor (POS) (2) and O-ring (1) and then install the crankshaft position sensor cover (3) on the cylin-
der block (4).
• Tighten bolts with sensor inserted completely.
CAUTION:
• Avoid impacts such as a dropping.
• Do not disassemble.
• Keep sensor away from metal particles.
• Do not place the sensor in a location where it is exposedto magnetism.
• Do not reuse O-ring.
21. For the oil level gauge guide (1), secure in position (B) shown to the water inlet clip (A) after inserting to the cylinder block side.
22. Assembly of the remaining components is in the reverse order of disassembly.
Tool number : KV11105210 (J-44716)
Tool number : KV11105210 (J-44716)
: Engine front
: Engine front
PBIC3754E
JPBIA4202ZZ
PBIC3755E
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2016 Versa Note

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EC-2
ELECTRIC IGNITION SYSTEM : System De-
scription ............................................................... ...
35
AIR CONDITIONING CUT CONTROL ................... ...36
AIR CONDITIONING CUT CONTROL : System
Diagram ..................................................................
37
AIR CONDITIONING CUT CONTROL : System
Description ..............................................................
37
CAN COMMUNICATION ........................................ ...38
CAN COMMUNICATION : System Description ......38
COOLING FAN CONTROL .................................... ...38
COOLING FAN CONTROL : System Diagram .......38
COOLING FAN CONTROL : System Description ...38
EVAPORATIVE EMISSION SYSTEM .................... ...40
EVAPORATIVE EMISSION SYSTEM : System
Diagram ............................................................... ...
40
EVAPORATIVE EMISSION SYSTEM : System
Description ........................................................... ...
40
INTAKE VALVE TIMING CONTROL ..................... ...41
INTAKE VALVE TIMING CONTROL : System Di-
agram .................................................................. ...
41
INTAKE VALVE TIMING CONTROL : System De-
scription ............................................................... ...
41
EXHAUST VALVE TIMING CONTROL ................. ...42
EXHAUST VALVE TIMING CONTROL : System
Diagram ............................................................... ...
42
EXHAUST VALVE TIMING CONTROL : System
Description ........................................................... ...
42
ENGINE PROTECTION CONTROL AT LOW EN-
GINE OIL PRESSURE ..............................................
43
ENGINE PROTECTION CONTROL AT LOW EN-
GINE OIL PRESSURE : S ystem Diagram ..............
43
ENGINE PROTECTION CONTROL AT LOW EN-
GINE OIL PRESSURE : S ystem Description .........
43
FUEL FILLER CAP WARNING SYSTEM .............. ...44
FUEL FILLER CAP WARNING SYSTEM :
System Diagram ....................................................
44
FUEL FILLER CAP WARNING SYSTEM : System
Description ........................................................... ...
44
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ...45
AUTOMATIC SPEED CONTROL DEVICE (AS-
CD) : System Diagram ............................................
45
AUTOMATIC SPEED CONTROL DEVICE (AS-
CD) : System Description .......................................
45
OPERATION ......................................................47
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ...47
AUTOMATIC SPEED CONTROL DEVICE (AS-
CD) : Switch Name and Function ...........................
47
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....49
Diagnosis Description .......................................... ...49
GST (Generic Scan Tool) .......................................49
DIAGNOSIS SYSTEM (ECM) ............................50
DIAGNOSIS DESCRIPTION .................................. ...50
DIAGNOSIS DESCRIPTION : 1st Trip Detection
Logic and Two Trip Detection Logic ........................
50
DIAGNOSIS DESCRIPTION : DTC and Freeze
Frame Data .......................................................... ...
50
DIAGNOSIS DESCRIPTION : Counter System ......51
DIAGNOSIS DESCRIPTION : Driving Pattern ..... ...54
DIAGNOSIS DESCRIPTION : System Readiness
Test (SRT) Code .................................................. ...
55
DIAGNOSIS DESCRIPTION : Permanent Diag-
nostic Trouble Code (Permanent DTC) ..................
56
DIAGNOSIS DESCRIPTION : Malfunction Indica-
tor Lamp (MIL) ..................................................... ...
57
On Board Diagnosis Function .................................57
CONSULT Function ................................................60
ECU DIAGNOSIS INFORMATION .............71
ECM ...................................................................71
Reference Value .................................................. ...71
Fail Safe .................................................................83
DTC Inspection Priority Chart ...............................85
DTC Index ..............................................................87
Test Value and Test Limit .......................................90
WIRING DIAGRAM ....................................99
ENGINE CONTROL SYSTEM ........................ ...99
Wiring Diagram .................................................... ...99
BASIC INSPECTION .................................120
DIAGNOSIS AND REPAIR WORKFLOW ...... ..120
Work Flow ............................................................ .120
Diagnostic Work Sheet .........................................123
ADDITIONAL SERVICE WHEN REPLACING
ECM ..................................................................
125
Description ........................................................... .125
Work Procedure ....................................................125
VIN REGISTRATION ........................................127
Description ........................................................... .127
Work Procedure ....................................................127
ACCELERATOR PEDAL RELEASED POSI-
TION LEARNING ............................................ ..
128
Description ........................................................... .128
Work Procedure ....................................................128
THROTTLE VALVE CLOSED POSITION
LEARNING .......................................................
129
Description ........................................................... .129
Work Procedure ....................................................129
IDLE AIR VOLUME LEARNING .......................130
Description ........................................................... .130
Work Procedure ....................................................130
Revision: August 2015 2016 Versa Note

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EC-8
< PRECAUTION >[HR16DE]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000012431263
The Supplemental Restraint System such as “A IR 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 SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
On Board Diagnosti c (OBD) System of Engine and CVTINFOID:0000000012431265
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair
or inspection work. The open/short circuit of re lated switches, sensors, solenoid valves, etc. will
cause the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL 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-lock- ing type harness connector. For descripti on and how to disconnect, refer to PG-9, "
Harness Connec-
tor".
• Be sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MIL to li ght up due to the short circuit.
• Be sure to connect rubber tubes properly afte r work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the fuel injection system, etc.
• Be sure to erase the unnecessary malfunction info rmation (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
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PRECAUTIONSEC-9
< PRECAUTION > [HR16DE]
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General PrecautionsINFOID:0000000012431266
•
Always use a 12 volt battery as power source.
• Do not attempt to disconnect battery cables while engine is
running.
• Before connecting or disc onnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative bat-
tery 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 ig nition switch OFF and then dis-
connect battery ground cable.
• Do not disassemble ECM.
• If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-c ontrol at its initial value. So,
engine operation can vary slight ly in this case. However, this
is not an indication of a malf unction. Do not replace parts
because of a slight variation.
• If the battery is disconnected, the following emission-related
diagnostic information will be lost within 24 hours.
- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values
• 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) volt-
age to develop in coil and cond enser, thus resulting in dam-
age to ICs.
• Keep engine control system harness at least 10 cm (4 in) away
from adjacent harness, to prevent engine control system mal-
functions due to receiving externa l noise, degraded operation
of ICs, etc.
• Keep engine control system parts and harness dry.
• Before replacing ECM, perform ECM Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer to EC-71, "
Reference Value".
• Handle mass air flow sensor carefully to avoid damage.
• Do not clean mass air flow senso r with any type of detergent.
• Do not disassemble electric th rottle control actuator.
• Even a slight leak in the air intake system can cause serious
incidents.
• Do not shock or jar the camsh aft position sensor (PHASE),
crankshaft position sensor (POS).
SEF289H
PBIA9222J
PBIB0090E
MEF040D
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STRUCTURE AND OPERATIONEC-29
< SYSTEM DESCRIPTION > [HR16DE]
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On Board Refueling Vapor Recovery (ORVR)INFOID:0000000012431306
From the beginning of refueling, the air and vapor insi
de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The v apor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspectio ns below, be sure to observe the following:
• Put a “CAUTION: FLAMMABL E” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure to furnish the workshop with a CO
2 fire extinguisher.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-proof containe r and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-137, "
Work Procedure".
- Disconnect battery ground cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine and check for fuel leaks at connection.
• Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.
JMBIA1930GB
Revision: August 2015 2016 Versa Note

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ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-49
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000012431331
This system is an on board diagnostic system that re
cords exhaust emission-related diagnostic information
and detects a sensors/actuator-related malfunction. A ma lfunction is indicated by the malfunction indicator
lamp (MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diag-
nostic tool (GST: Generic Scan Tool).
GST (Generic Scan Tool)INFOID:0000000012431332
When GST is connected with a data link connector equipped on the vehicle side, it will communicate with the
control unit equipped in the vehicle and then enable various kinds of diagnostic tests. Refer to EC-49, "
Diag-
nosis Description".
NOTE:
Service $0A is not applied for regions where it is not mandated.
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EC-50
< SYSTEM DESCRIPTION >[HR16DE]
DIAGNOSIS SYSTEM (ECM)
DIAGNOSIS SYSTEM (ECM)
DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : 1st Trip Detect
ion Logic and Two Trip Detection Logic
INFOID:0000000012431333
When a malfunction is detected for the first time, 1st tr ip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not illuminate at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL illuminates. The MIL illuminates at the same time when the DTC is stored.
<2nd trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is per-
formed during vehicle operation. Specific on board diagnos tic items will cause the ECM to illuminate or blink
the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
× : Applicable —: Not applicable
DIAGNOSIS DESCRIPTION : DT C and Freeze Frame DataINFOID:0000000012431334
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DT C number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously , and the 1st trip DTC did not recur, the 1st trip DTC
will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is saved in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are saved in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL light s up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. Fo r malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
For malfunctions in which 1st trip DTCs are displayed, refer to EC-87, "
DTCIndex". These items are required
by legal regulations to continuously monitor the system/component. In addition, the items monitored non-con-
tinuously are also displayed on CONSULT.
1st trip DTC is specified in Service $07 of SAE J1979/ ISO 15031-5. 1st trip DTC detection occurs without illu-
minating the MIL and therefore does not warn the driver of a malfunction.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-120, "
Work Flow". Then perform DTC Confirma-
tion Procedure or Component Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT screen.
Items MIL
DTC1st trip DTC
1st trip 2nd trip
1st trip
displaying 2nd trip
displaying 1st trip
displaying 2nd trip
displaying
Blinking Illuminated Blinking Illuminated
Misfire (Possible three way catalyst
damage) — DTC: P0300 – P0308
is being detected ×
——— — — ×—
Misfire (Possible three way catalyst
damage) — DTC: P0300 – P0308
is being detected ——
×—— ×——
One trip detection diagnoses (Re-
fer to EC-87, "
DTCIndex".) —
×—— ×———
Except above — — —×— ×× —
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