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Nissan Juke (2016 year). Service Repair Manual - part 231

DIAGNOSIS SYSTEM (ECM)

EC-663

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

Explanation for Driving Patterns Except for “Misfire <Exhaust Quality Deterioration>”, “Fuel Injection
System”

Driving Pattern A

Refer to

EC-663, "DIAGNOSIS DESCRIPTION : Driving Pattern"

Driving Pattern B

Refer to

EC-663, "DIAGNOSIS DESCRIPTION : Driving Pattern"

DIAGNOSIS DESCRIPTION : Driving Pattern

INFOID:0000000012198240

DRIVING PATTERN A

Driving pattern A means a trip satisfying the following conditions.

• Engine speed reaches 400 rpm or more.

• Engine coolant temperature rises by 20

C (36

F) or more after starting the engine.

• Engine coolant temperature reaches 70

C (158

F) or more.

• The ignition switch is turned from ON to OFF.

NOTE:

• When the same malfunction is detected regardless of driving conditions, reset the counter of driving pattern

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern A.

DRIVING PATTERN B

Driving pattern B means a trip satisfying the following conditions.

• Engine speed reaches 400 rpm or more.

• Engine coolant temperature reaches 70

C (158

F) or more.

• Vehicle speed of 70 – 120 km/h (44 – 75 MPH) is maintained for 60 seconds or more under the control of

closed loop.

• Vehicle speed of 30 – 60 km/h (19 – 37 MPH) is maintained for 10 seconds or more under the control of

closed loop.

• Under the closed loop control condition, the following state reaches 12 seconds or more in total: Vehicle

speed of 4 km/h (2 MPH) or less with idling condition.

• The state of driving at 10 km/h (7 MPH) or more reaches 10 minutes or more in total.

• A lapse of 22 minutes or more after engine start.

NOTE:

• Drive the vehicle at a constant velocity.

• When the same malfunction is detected regardless of driving conditions, reset the counter of driving pattern

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern B.

DRIVING PATTERN C

Driving pattern C means operating vehicle as per the following:

The following conditions should be satisfied at the same time:

Engine speed: (Engine speed in the freeze frame data)

375 rpm

Calculated load value: (Calculated load value in the freeze frame data) x (1

0.1) [%]

Engine coolant temperature condition:

*1: When the same malfunction is de-

tected in two consecutive trips, MIL
will light up.

*2: MIL will turn OFF after vehicle is driv-

en 3 times (pattern B) without any
malfunctions.

*3: When the same malfunction is de-

tected in two consecutive trips, the
DTC and the freeze frame data will be
stored in ECM.

*4: The DTC and the freeze frame data

will not be displayed any longer after
vehicle is driven 40 times (pattern A)
without the same malfunction.
(The DTC and the freeze frame data
still remain in ECM.)

*5: When a malfunction is detected for

the first time, the 1st trip DTC and the
1st trip freeze frame data will be
stored in ECM.

*6: 1st trip DTC will be cleared after vehi-

cle is driven once (pattern B) without
the same malfunction.

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip
freeze frame data will be cleared.

Revision: November 2015

2016 JUKE

EC-664

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

DIAGNOSIS SYSTEM (ECM)

• When the freeze frame data shows lower than 70

C (158

F), engine coolant temperature should be lower

than 70

C (158

F).

• When the freeze frame data shows higher than or equal to 70

C (158

F), engine coolant temperature should

be higher than or equal to 70

C (158

F).

NOTE:

• When the same malfunction is detected regardless of the above vehicle conditions, reset the counter of driv-

ing pattern C.

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern C.

• The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is

stored in ECM.

DRIVING PATTERN D

Driving pattern D means a trip satisfying the following conditions.

• The state of driving at 40 km/h (25 MPH) reaches 300 seconds or more in total.

• Idle speed lasts 30 seconds or more.

• A lapse of 600 seconds or more after engine start.

NOTE:

• When the same malfunction is detected regardless of driving conditions, reset the counter of driving pattern

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern D.

DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code

INFOID:0000000012198241

System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5.

As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of

SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-

ponents. Completion must be verified in order for the emissions inspection to proceed.

If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use

the information in this Service Manual to set the SRT to “CMPLT”.

In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT

status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains

“CMPLT” until the self-diagnosis memory is erased.

Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's

normal driving pattern; the SRT will indicate “INCMP” for these items.

NOTE:

The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-

ory power supply is interrupted for several hours.

If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-

tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the

vehicle is returned to the customer untested.

NOTE:

If permanent DTC is stored or MIL illuminates during the state emissions inspection, the vehicle is also

returned to the customeruntested even though the SRT indicates “CMPLT” for all test items. therefore, it is

important to check SRT (“CMPLT”), DTC (No DTCs) and permanent DTC (No permanent DTC) before the

inspection.

SRT SET TIMING

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is

done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and

is shown in the table below.

Revision: November 2015

2016 JUKE

DIAGNOSIS SYSTEM (ECM)

EC-665

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses show OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will

indicate “CMPLT”.

→

Case 1 above

When all SRT related self-diagnoses show OK results through several different cycles, the SRT will indicate

“CMPLT” at the time the respective self-diagnoses have at least one OK result.

→

Case 2 above

If one or more SRT related self-diagnoses show NG results in 2 consecutive cycles, the SRT will also indicate

“CMPLT”.

→

Case 3 above

The table above shows that the minimum number of cycles for setting SRT as “INCMP” is the number one (1)

for each self-diagnosis (Case 1 & 2) or the number two (2) for one of self-diagnoses (Case 3). However, in

preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice

(Case 3) for the following reasons:

• The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.

• The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.

• During SRT driving pattern, the 1st trip DTC (NG) is detected prior to “CMPLT” of SRT and the self-diagnosis

memory must be erased from the ECM after repair.

• If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.

NOTE:

SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out

prior to the state emission inspection even though the SRT indicates “CMPLT”.

DIAGNOSIS DESCRIPTION : Permanent Diagnostic Trouble Code (Permanent DTC)

INFOID:0000000012198242

Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.

ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as

a permanent DTC until ECM judges that there is no presence of malfunction.

Permanent DTCs cannot be erased by using the erase function of CONSULT or Generic Scan Tool (GST) and

by disconnecting the battery to shut off power to ECM. This prevents a vehicle from passing the in-use inspec-

tion without repairing a malfunctioning part.

When not passing the in-use inspection due to more than one permanent DTC, permanent DTCs should be

erased, referring to this manual.

NOTE:

• The important items in in-use inspection are that MIL is not ON, SRT test items are set, and permanent

DTCs are not included.

• Permanent DTCs do not apply for regions that permanent DTCs are not regulated by law.

Self-diagnosis result

Example

Diagnosis

Ignition cycle

←

→

OFF

←

→

OFF

←

→

OFF

←

→

All OK

Case 1

P0400

OK (1)

— (1)

OK (2)

— (2)

P0402

OK (1)

— (1)

OK (2)

P1402

OK (1)

OK (2)

— (2)

SRT of EGR

“CMPLT”

Case 2

P0400

OK (1)

— (1)

P0402

— (0)

OK (1)

— (1)

P1402

OK (1)

OK (2)

— (2)

SRT of EGR

“INCMP”

“CMPLT”

NG exists

Case 3

P0400

—

P0402

—

P1402

—

(Consecutive

NG)

(1st trip)

DTC

1st trip DTC

—

1st trip DTC

DTC

(= MIL ON)

SRT of EGR

“INCMP”

“CMPLT”

Revision: November 2015

2016 JUKE

EC-666

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

DIAGNOSIS SYSTEM (ECM)

PERMANENT DTC SET TIMING

The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

INFOID:0000000012198243

• When detecting a DTC that affects exhaust gas, the exhaust emis-

sion-related control module transmits a malfunction indicator lamp

signal to ECM via CAN communication line.

ECM prioritizes (MIL: ON/blink) the signal received from the

exhaust emission-related control module and the ECM-stored DTC

that affects exhaust gas and transmits a malfunction indicator lamp

signal to the combination meter via CAN communication line.

The combination meter turns ON or blinks the MIL, according to

the signal transmitted from ECM, and alerts the driver of malfunc-

tion detection.

• Control modules that a DTC of MIL ON/Blink is stored (Control

module varies among DTCs.):

- ECM

- TCM

1. The MIL illuminates when ignition switch is turned ON (engine is not running).

NOTE:

Check the MIL circuit if MIL does not illuminate. Refer to

EC-1237, "Component Function Check"

2. When the engine is started, the MIL should go off.

NOTE:

If MIL remains ON or continues blinking, a DTC(s) that affects exhaust gas is detected. In this case, Self-

diagnosis is required for performing inspection and repair.

On Board Diagnosis Function

INFOID:0000000012198244

ON BOARD DIAGNOSIS ITEM

The on board diagnostic system has the following functions.

BULB CHECK MODE

Description

This function allows damage inspection in the MIL bulb (blown, open circuit, etc.).

Operation Procedure

1. Turn ignition switch ON.
2. The MIL on the instrument panel should stay ON.

If it remains OFF, check MIL circuit. Refer to

EC-1237, "Diagnosis Procedure"

SRT STATUS MODE

Description

JSBIA1315ZZ

Diagnostic test mode

Function

Bulb check

MIL can be checked.

SRT status

ECM can read if SRT codes are set.

Malfunction warning

If ECM detects a malfunction, it illuminates or blinks MIL to inform the driver that a malfunction has
been detected.

Self-diagnostic results

DTCs or 1st trip DTCs stored in ECM can be read.

Accelerator pedal released po-
sition learning

ECM can learn the accelerator pedal released position. Refer to

EC-753, "Description"

Throttle valve closed position
learning

ECM can learn the throttle valve closed position. Refer to

EC-754, "Description"

Idle air volume learning

ECM can learn the idle air volume. Refer to

EC-758, "Description"

Mixture ratio self-learning value
clear

Mixture ratio self-learning value can be erased. Refer to

EC-762, "Description"

Revision: November 2015

2016 JUKE

DIAGNOSIS SYSTEM (ECM)

EC-667

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

This function allows to read if ECM has completed the self-diagnoses of major emission control systems and

components. For SRT, refer to

EC-664, "DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code"

Operation Procedure

1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown blow.

• ECM continues to illuminate MIL if all SRT codes are set.

• ECM blinks MIL for about 10 seconds if all SRT codes are not set.

MALFUNCTION WARNING MODE

Description

In this function ECM turns on or blinks MIL when it detects a malfunction in the emission control system com-

ponents and/or the powertrain control components (which affect vehicle emissions) to inform the driver that a

malfunction has been detected.

Operation Procedure

1. Turn ignition switch ON.
2. Check that MIL illuminates.

If it remains OFF, check MIL circuit. Refer to

EC-664, "DIAGNOSIS DESCRIPTION : System Readiness

Test (SRT) Code"

3. Start engine and let it idle.

• For two trip detection logic diagnoses, ECM turns on MIL when it detects the same malfunction twice in

the two consecutive driving cycles.

• For 1st trip detection logic diagnoses, ECM turns on MIL when it detects a malfunction in one driving

cycle.

• ECM blinks MIL when it detects a malfunction that may damage the three way catalyst (misfire).

CONSULT Function

INFOID:0000000012198245

FUNCTION

JMBIA1515GB

Diagnostic test mode

Function

Self Diagnostic Results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly.*

Data Monitor

Input/Output data in the ECM can be read.

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on the CONSULT unit.

Active Test

Diagnostic Test Mode in which CONSULT drives some actuators apart from the ECMs and also shifts
some parameters in a specified range.

Revision: November 2015

2016 JUKE

EC-668

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

DIAGNOSIS SYSTEM (ECM)

*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
• Diagnostic trouble codes
• 1st trip diagnostic trouble codes
• Freeze frame data
• 1st trip freeze frame data
• System readiness test (SRT) codes
• Test values

SELF DIAGNOSTIC RESULT MODE

Self Diagnostic Item

Regarding items of DTC and 1st trip DTC, refer to

EC-706, "DTC Index"

How to Read DTC and 1st Trip DTC

DTCs and 1st trip DTCs related to the malfunction are displayed in “Self-diag results”.

• When ECM detects a 1st trip DTC, “1t” is displayed for “TIME”.

• When ECM has detected a current DTC, “0” is displayed for “TIME”.

• If “TIME” is neither “0” nor “1t”, the DTC occurred in the past and ECM shows the number of times the vehi-

cle has been driven since the last detection of the DTC.

How to Erase DTC and 1st Trip DTC

NOTE:

If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 sec-

onds and then turn it ON (engine stopped) again.

Freeze Frame Data and 1st Trip Freeze Frame Data

Ecu Identification

ECM part number can be read.

DTC Work Support

The status of system monitoring tests and the self-diagnosis status/results can be confirmed.

Diagnostic test mode

Function

Freeze frame data

item*

Description

DIAG TROUBLE
CODE
[PXXXX]

The engine control component part/control system has a trouble code the is displayed as PXXXX. (Refer to

EC-706, "DTC Index"

CAL/LD VALUE [%]

The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [

or [

The engine coolant temperature at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 [%]

• “Long-term fuel trim” at the moment a malfunction is detected is displayed.
• The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than

short-term fuel trim.

L-FUEL TRM-B2 [%]

S-FUEL TRM-B1 [%]

• “Short-term fuel trim” at the moment a malfunction is detected is displayed.
• The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel sched-

ule.

S-FUEL TRM-B2 [%]

ENGINE SPEED [rpm] The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED
[km/h] or [mph]

The vehicle speed at the moment a malfunction is detected is displayed.

INT MANI PRES [kPa] These items are displayed but are not applicable to this model.

ABSOL TH·P/S [%]

The throttle valve opening angle at the moment a malfunction is detected is displayed.

B/FUEL SCHDL
[msec]

The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [

or [

The intake air temperature at the moment a malfunction is detected is displayed.

Revision: November 2015

2016 JUKE

DIAGNOSIS SYSTEM (ECM)

EC-669

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

*: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE

NOTE:

• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• For reference values of the following items, refer to

EC-679, "Reference Value"

Monitored Item

: Applicable

FUEL SYS-B1

• “Fuel injection system status” at the moment a malfunction is detected is displayed.
• One of the following mode is displayed.

Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2

COMBUST CONDI-
TION

These items are displayed but are not applicable to this model.

FUEL RAIL PRES-
SURE [MPa]

• The fuel rail pressure at the moment a malfunction is detected is displayed.

TARGET FUEL RAIL
PRESSURE [MPa]

• The target fuel rail pressure at the moment a malfunction is detected is displayed.

BATTERY VOLTAGE
[V]

• The battery voltage at the moment a malfunction is detected is displayed.

FUEL LEVEL [%]

• The fuel level at the moment a malfunction is detected is displayed.

Freeze frame data

item*

Description

Monitored item

Unit

Description

Remarks

ENG SPEED

rpm

Indicates the engine speed computed from the sig-
nal of the crankshaft position sensor (POS) and
camshaft position sensor (PHASE).

• Accuracy becomes poor if engine

speed drops below the idle rpm.

• If the signal is interrupted while the

engine is running, an abnormal value
may be indicated.

MASS AIR FLOW
SENSOR (Hz)

The signal frequency of the mass air flow sensor is
displayed.

B/FUEL SCHDL

msec

“Base fuel schedule” indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction.

When engine is running specification
range is indicated in “SPEC”.

A/F ALPHA-B1

The mean value of the air-fuel ratio feedback cor-
rection factor per cycle is indicated.

• When the engine is stopped, a certain

value is indicated.

• When engine is running specification

range is indicated in “SPEC”.

• This data also includes the data for

the air-fuel ratio learning control.

COOLAN TEMP/S

C or

The engine coolant temperature (determined by the
signal voltage of the engine coolant temperature
sensor) is displayed.

When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the ECM
is displayed.

A/F SEN1 (B1)

The A/F signal computed from the input signal of
the air fuel ratio (A/F) sensor 1 is displayed.

HO2S2 (B1)

The signal voltage of the heated oxygen sensor 2 is
displayed.

HO2S2 MNTR(B1)

RICH/LEAN

• Display of heated oxygen sensor 2 signal:
- RICH: means the amount of oxygen after three

way catalyst is relatively small.

- LEAN: means the amount of oxygen after three

way catalyst is relatively large.

When the engine is stopped, a certain
value is indicated.

Revision: November 2015

2016 JUKE

EC-670

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

DIAGNOSIS SYSTEM (ECM)

VHCL SPEED SE

km/h or mph

The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.

BATTERY VOLT

The power supply voltage of ECM is displayed.

ACCEL SEN 1

The accelerator pedal position sensor signal volt-
age is displayed.

ACCEL SEN 2 signal is converted by
ECM internally. Thus, it differs from
ECM terminal voltage signal.

ACCEL SEN 2

TP SEN 1-B1

The throttle position sensor signal voltage is dis-
played.

TP SEN 2-B1 signal is converted by
ECM internally. Thus, it differs from
ECM terminal voltage signal.

TP SEN 2-B1

START SIGNAL

ON/OFF

Indicates start signal status [ON/OFF] computed by
the ECM according to the signals of engine speed
and battery voltage.

After starting the engine, [OFF] is dis-
played regardless of the starter signal.

CLSD THL POS

ON/OFF

Indicates idle position [ON/OFF] computed by ECM
according to the accelerator pedal position sensor
signal.

AIR COND SIG

ON/OFF

Indicates [ON/OFF] condition of the air conditioner
switch as determined by the air conditioner signal.

PW/ST SIGNAL

ON/OFF

[ON/OFF] condition of the power steering system
(determined by the signal sent from EPS control
unit) is indicated.

LOAD SIGNAL

ON/OFF

• Indicates [ON/OFF] condition from the electrical

load signal.

- ON: Rear window defogger switch is ON and/or

lighting switch is in 2nd position.

- OFF: Both rear window defogger switch and light-

ing switch are OFF.

IGNITION SW

ON/OFF

Indicates [ON/OFF] condition from ignition switch
signal.

HEATER FAN SW

ON/OFF

Indicates [ON/OFF] condition from the heater fan
switch signal.

BRAKE SW

ON/OFF

Indicates [ON/OFF] condition from the stop lamp
switch signal.

IGN TIMING

BTDC

Indicates the ignition timing computed by ECM ac-
cording to the input signals.

When the engine is stopped, a certain
value is indicated.

COMBUSTION

—

These items are displayed but are not applicable to
this model.

CAL/LD VALUE

“Calculated load value” indicates the value of the
current airflow divided by peak airflow.

MASS AIRFLOW

g/s

Indicates the mass airflow computed by ECM ac-
cording to the signal voltage of the mass airflow
sensor.

PURG VOL C/V

• Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the
ECM according to the input signals.

• The opening becomes larger as the value in-

creases.

INT/V TIM(B1)

Indicates [

CA] of intake camshaft advance angle.

EXH/V TIM B1

Indicates [

CA] of exhaust camshaft retard angle.

INT/V SOL(B1)

• The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value

increases.

Monitored item

Unit

Description

Remarks

Revision: November 2015

2016 JUKE

Content .. 229 230 231 232 ..