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
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DTC Logic ...........................................................
..
416
Diagnosis Procedure .............................................416
Component Inspection ..........................................418
P2135 TP SENSOR ..........................................419
DTC Logic ........................................................... ..419
Diagnosis Procedure .............................................419
Component Inspection ..........................................420
P2138 APP SENSOR .......................................422
DTC Logic .............................................................422
Diagnosis Procedure .............................................422
Component Inspection ..........................................424
P219A AIR FUEL RATIO .................................426
DTC Logic ........................................................... ..426
Diagnosis Procedure .............................................427
P219C, P219D, P219E, P219F AIR FUEL RA-
TIO ....................................................................
431
DTC Logic ........................................................... ..431
Diagnosis Procedure .............................................433
ASCD BRAKE SWITCH ...................................437
Component Function Check ................................ ..437
Diagnosis Procedure .............................................437
Component Inspection (ASCD Brake Switch) .......438
CLUTCH PEDAL POSITION SWITCH .............439
Component Function Check ................................ ..439
Diagnosis Procedure .............................................439
Component Inspection (Clutch Pedal Position
Switch) ..................................................................
440
COOLING FAN .................................................441
Component Function Check ................................ ..441
Diagnosis Procedure .............................................441
Component Inspection (Cooling Fan Motor) .........443
Component Inspection (Cooling Fan Relay) .........443
ELECTRICAL LOAD SIGNAL .........................444
Description .......................................................... ..444
Component Function Check ..................................444
Diagnosis Procedure .............................................444
FUEL INJECTOR .............................................446
Component Function Check ................................ ..446
Diagnosis Procedure .............................................446
Component Inspection ..........................................447
FUEL PUMP .....................................................448
Component Function Check ................................ ..448
Diagnosis Procedure .............................................448
Component Inspection ..........................................450
IGNITION SIGNAL ...........................................451
Component Function Check ................................ ..451
Diagnosis Procedure .............................................451
Component Inspection (Ignition Coil with Power
Transistor) ........................................................... ..
454
Component Inspection (Condenser) ......................455
MALFUNCTION INDICATOR LAMP ..............456
Component Function Check ..................................456
Diagnosis Procedure .............................................456
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) ....................................................
457
Component Function Check ..................................457
Diagnosis Procedure .............................................457
Component Inspection (Refueling EVAP vapor cut
valve) ................................................................... ..
459
Component Inspection (Drain filter) .......................461
REFRIGERANT PRESSURE SENSOR ..........462
Component Function Check ..................................462
Diagnosis Procedure .............................................462
SYMPTOM DIAGNOSIS ............................464
ENGINE CONTROL SYSTEM SYMPTOMS ...464
Symptom Table ................................................... ..464
NORMAL OPERATING CONDITION .............470
Description .............................................................470
PERIODIC MAINTENANCE ......................471
IDLE SPEED .... ...............................................471
Inspection ............................................................ ..471
IGNITION TIMING ...........................................472
Inspection ..............................................................472
EVAPORATIVE EMISSION SYSTEM .............473
Inspection ..............................................................473
EVAP LEAK CHECK ......................................474
Inspection ..............................................................474
POSITIVE CRANKCASE VENTILATION .......476
Inspection ..............................................................476
REMOVAL AND INSTALLATION .............477
ECM .................................................................477
Exploded View ..................................................... ..477
Removal and Installation .......................................477
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... .
478
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
478
Idle Speed ........................................................... ..478
Ignition Timing .......................................................478
Calculated Load Value ..........................................478
Mass Air Flow Sensor ............................................478
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EC-18
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
Accelerator Pedal Position Sensor
INFOID:0000000012431271
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signals to the ECM.
The ECM judges the current opening angle of the accelerator pedal
from these signals and controls the throttle control motor based on
these signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
Engine oil pressure sensor EC-21, "Engine Oil Pressure Sensor"
Engine oil temperature sensorEC-21, "Engine Oil Temperature Sensor"
EVAP canister purge volume control solenoid valveEC-22, "EVAP Canister Purge Volume Control Solenoid Valve"
EVAP canister vent control valveEC-22, "EVAP Canister Vent Control Valve"
EVAP control system pressure sensorEC-22, "EVAP Control System Pressure Sensor"
Exhaust valve timing control position sensor EC-19, "Camshaft Position Sensor"
Exhaust valve timing control solenoid valveEC-23, "Exhaust Valve Timing Control Solenoid Valve"
Fuel injectorEC-23, "Fuel Injector"
Fuel pumpEC-23, "Fuel Pump"
Heated oxygen sensor 2EC-24, "Heated Oxygen Sensor 2"
Heated oxygen sensor 2 heaterEC-24, "Heated Oxygen Sensor 2 Heater"
Ignition coil (with power transistor)EC-24, "Ignition Coil With Power Transistor"
Intake air temperature sensorEC-24, "Intake Air Temperature Sensor"
Camshaft position sensorEC-19, "Camshaft Position Sensor"
Intake valve timing control solenoid valveEC-25, "Intake Valve Timing Control Solenoid Valve"
Knock sensorEC-25, "Knock Sensor"
Mass air flow sensorEC-26, "Mass Air Flow Sensor"
PCV valveEC-28, "Positive Crankcase Ventilation"
Refrigerant pressure sensorEC-27, "Refrigerant Pressure Sensor"
Stop lamp switchEC-27, "Stop Lamp Switch & ASCD Brake Switch"
Throttle control motorEC-27, "Throttle Control Motor"
Throttle control motor relay EC-27, "Throttle Control Motor Relay"
Throttle position sensor EC-27, "Throttle Position Sensor"
ASCD steering switchEC-27, "ASCD Steering Switch"
ASCD brake switchEC-27, "Stop Lamp Switch & ASCD Brake Switch"
Clutch pedal position switchEC-20, "Clutch Pedal Position Switch"
Active grille shutterEXT-10, "ACTIVE GRILLE SHUTTER SYSTEM : Active grille shutter"
Component Reference
PBIB1741E
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EC-22
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
*: These data are reference values and are measured between ECM terminals.
EVAP Canister Purge Volume Control Solenoid ValveINFOID:0000000012431283
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
EVAP Canister Vent Control ValveINFOID:0000000012431284
The EVAP canister vent control
valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.
EVAP Control System Pressure SensorINFOID:0000000012431285
The EVAP control system pressure s ensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases.
Engine oil temperature [ °C ( °F)]
Vo l ta g e* (V)Resistance (k
Ω)
–10 (14) 4.4 7.0 - 11.4 20 (68) 3.52.10 - 2.90
50 (122) 2.20.68 - 1.00
90 (194) 0.90.236 - 0.260
110 (230) 0.60.143 - 0.153
SEF012P
JSBIA0651ZZ
PBIB1263E
PBIB3370E
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Exhaust Valve Timing Control Solenoid ValveINFOID:0000000012431286
Exhaust valve timing control solenoi
d valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The exhaust valve timing control solenoid valve changes the oil
amount and direction of flow through exhaust valve timing control
unit or stops oil flow.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the exhaust valve angle at the control
position.
Fuel InjectorINFOID:0000000012431287
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Fuel PumpINFOID:0000000012431288
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for a few seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engi ne is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition s witch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The EC M does not directly drive the fuel
pump. It controls the ON/OFF fuel pump rela y, which in turn controls the fuel pump.
JSBIA0652ZZ
JSBIA0742ZZ
SensorInput signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
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COMPONENT PARTSEC-25
< SYSTEM DESCRIPTION > [HR16DE]
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*: These data are reference values and are measured between ECM terminals.
Intake Valve Timing Control Solenoid ValveINFOID:0000000012431293
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Knock SensorINFOID:0000000012431294
The knock sensor is attached to t
he cylinder block. It senses engine
knocking using a piezoelectric el ement. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
Battery Current Sensor (With Battery Temperature Sensor)INFOID:0000000012431295
OUTLINE
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator.
Based on sensor signals, ECM judges whether or not the power
generation voltage variable contro l is performed. When performing
the power generation voltage variable control, ECM calculates the
target power generation voltage based on the sensor signal. And
ECM sends the calculated value as the power generation command
value to IPDM E/R. For the details of the power generation voltage
variable control, refer to CHG-8, "
System Description".
CAUTION:
Never connect the electrical co mponent or the ground wire
directly to the battery terminal. The connection cau ses the malfunction of the power generation volt-
age variable control, and then the battery discharge may occur.
BATTERY CURRENT SENSOR
The battery current sensor is installed to the battery negative cable. The sensor measures the charging/dis-
charging current of the battery.
Intake air temperature [ °C ( °F)] Voltage* (V) Resistance (k Ω)
25 (77) 3.31.800 - 2.200
80 (176) 1.20.283 - 0.359
SEF012P
PBIB1842E
JSBIA0284ZZ
JPBIA3262ZZ
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EC-26
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
BATTERY TEMPERATURE SENSOR
Battery temperature sensor is int
egrated in battery current sensor.
The sensor measures temperature around the battery.
The electrical resistance of the t hermistor decreases as temperature
increases.
*: These data are reference values and are measured between battery temperature
sensor signal terminal and sensor ground.
Malfunction Indicator Lamp (MIL)INFOID:0000000012431296
The MIL is located on the combination meter.
The MIL will illuminate when the ignition switch is turned ON without
the engine running. This is a bulb check.
When the engine is started, the MIL should turn OFF. If MIL remains
ON or continues blinking, the on board diagnostic system detects a
DTC(s) that affects exhaust gas.
For details, refer to EC-57, "
DIAGNOSIS DESCRIPTION : Malfunc-
tion Indicator Lamp (MIL)".
Mass Air Flow SensorINFOID:0000000012431297
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
Oil Pressure Warning LampINFOID:0000000012431298
Oil pressure warning lamp is located on the combination meter.
It indicates the low pressure of the engine oil and the malfunction of
the engine oil pressure system.
Combination meter turns the oil pressure warning lamp ON/OFF
according to the oil pressure warning lamp signal received from
ECM via CAN communication.
For details, refer to EC-43, "
ENGINE PROTECTION CONTROL AT
LOW ENGINE OIL PRESSURE : System Description".
Temperature [°C ( °F)]
Vo l ta g e* (V) Resistance (k
Ω)
25 (77) 3.3331.9 - 2.1
90 (194) 0.9690.222 - 0.258
SEF012P
SAT652J
PBIA9559J
PBIA8559J
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ENGINE CONTROL SYSTEM : System DescriptionINFOID:0000000012431308
ECM performs various controls such as fuel
injection control and ignition timing control.
MULTIPORT FUEL INJECTION SYSTEM
Function Reference
Multiport fuel injection system EC-32, "
MULTIPORT FUEL INJECTION SYSTEM : System De-
scription"
Electric ignition system
EC-35, "ELECTRIC IGNITION SYSTEM : System Description"
Air conditioning cut controlEC-37, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"
CAN communication
EC-38, "CAN COMMUNICATION : System Description"
Cooling fan control EC-38, "COOLING FAN CONTROL : System Description"
Evaporative emission systemEC-40, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"
Intake valve timing control
EC-41, "INTAKE VALVE TIMING CONTROL : System Description"
Exhaust valve timing control EC-42, "EXHAUST VALVE TIMING CO
NTROL : System Descrip-
tion"
Engine protection control at low engine oil pressure EC-43, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"
Fuel filler cap warning systemEC-44, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"
Automatic speed control device (ASCD)
EC-45, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"
Active grille shutter systemEXT-11, "ACTIVE GRILLE SHUTTER SYSTEM : System Descrip-
tion"
Revision: August 2015
2016 Versa Note
cardiagn.com