Nissan Juke (2014 year). Service Repair Manual - part 87

EC-134

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DIAGNOSIS AND REPAIR WORKFLOW

NO-1

>> No request for I/M examination from the customer: Before returning the vehicle to the customer,

always erase unnecessary DTC in ECM and TCM (

With CONSULT: Refer to “How to Erase

DTC and 1st Trip DTC” in 

EC-71, "CONSULT Function"

, 

Without CONSULT: Refer to “How to

Erase Self-diagnostic Results” in 

EC-68, "On Board Diagnosis Function"

). If the completion of

SRT is needed, drive vehicle under the specific driving pattern. Refer to 

EC-152, "SRT Set Driving

Pattern"

.

NO-2

>> I/M examination, requested from the customer: GO TO 13.

13.

PREPARE FOR I/M EXAMINATION

1.

Set SRT codes. Refer to 

EC-151, "Description"

.

2.

Erase permanent DTCs. Refer to 

EC-157, "Description"

.

>> INSPECTION END

Diagnostic Work Sheet

INFOID:0000000009753125

DESCRIPTION

There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about symptoms. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the WORKSHEET SAMPLE
below in order to organize all the information for troubleshooting.
Some conditions may cause the MIL to illuminate or blink, and DTC
to be detected. Examples:
• Vehicle ran out of fuel, which caused the engine to misfire.
• Fuel filler cap was left off or incorrectly screwed on, allowing fuel to

evaporate into the atmosphere.

SEF907L

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DIAGNOSIS AND REPAIR WORKFLOW

EC-135

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WORKSHEET SAMPLE

MTBL0017

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EC-136

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BASIC INSPECTION

BASIC INSPECTION

Work Procedure

INFOID:0000000009753126

1.

INSPECTION START

1.

Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.

2.

Open engine hood and check the following:

-

Harness connectors for improper connections

-

Wiring harness for improper connections, pinches and cut

-

Vacuum hoses for splits, kinks and improper connections

-

Hoses and ducts for leaks

-

Air cleaner clogging

-

Gasket

3.

Confirm that electrical or mechanical loads are not applied.

-

Headlamp switch is OFF.

-

Air conditioner switch is OFF.

-

Rear window defogger switch is OFF.

-

Steering wheel is in the straight-ahead position, etc.

4.

Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.

5.

Run engine at about 2,000 rpm for about 2 minutes under no
load.

6.

Make sure that no DTC is displayed with CONSULT or GST.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REPAIR OR REPLACE

Repair or replace components as necessary according to corresponding Diagnostic Procedure.

>> GO TO 3.

3.

CHECK TARGET IDLE SPEED

1.

Run engine at about 2,000 rpm for about 2 minutes under no load.

SEF983U

SEF976U

SEF977U

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BASIC INSPECTION

EC-137

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2.

Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.

3.

Check idle speed.
For procedure, refer to 

EC-555, "Inspection"

.

For specification, refer to 

EC-562, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 4.

4.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform 

EC-143, "Work Procedure"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-144, "Work Procedure"

.

>> GO TO 6.

6.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-145, "Work Procedure"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 7.

NO

>> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.

7.

CHECK TARGET IDLE SPEED AGAIN

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
For procedure, refer to 

EC-555, "Inspection"

.

For specification, refer to 

EC-562, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the Following.
• Check camshaft position sensor (PHASE) and circuit. Refer to 

EC-333, "DTC Logic"

.

• Check crankshaft position sensor (POS) and circuit. Refer to 

EC-330, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace. Then GO TO 4

9.

CHECK ECM FUNCTION

1.

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

2.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-47, "ECM : Work Procedure"

 (with intelligent key system) or 

SEC-156, "ECM : Work Procedure"

(without intelligent key system).

>> GO TO 4.

10.

CHECK IGNITION TIMING

1.

Run engine at idle.

PBIA8513J

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EC-138

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BASIC INSPECTION

2.

Check ignition timing with a timing light.
For procedure, refer to 

EC-556, "Inspection"

For specification, refer to 

EC-562, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> GO TO 11.

11.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform 

EC-143, "Work Procedure"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-144, "Work Procedure"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-145, "Work Procedure"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 14.

NO

>> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.

14.

CHECK TARGET IDLE SPEED AGAIN

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
For procedure, refer to 

EC-555, "Inspection"

.

For specification, refer to 

EC-562, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> GO TO 17.

15.

CHECK IGNITION TIMING AGAIN

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
For procedure, refer to 

EC-556, "Inspection"

.

For specification, refer to 

EC-562, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> GO TO 16.

16.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to 

EM-73, "Exploded View"

.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair the timing chain installation. Then GO TO 4.

1

: Timing indicator

PBIB3263E

1

: Timing indicator

PBIB3263E

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BASIC INSPECTION

EC-139

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17.

DETECT MALFUNCTIONING PART

Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to 

EC-333, "DTC Logic"

.

• Check crankshaft position sensor (POS) and circuit. Refer to 

EC-330, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 18.

NO

>> Repair or replace. Then GO TO 4

18.

CHECK ECM FUNCTION 

1.

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

2.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-47, "ECM : Work Procedure"

 (with intelligent key system) or 

SEC-156, "ECM : Work Procedure"

(without intelligent key system).

>> GO TO 4.

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EC-140

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ADDITIONAL SERVICE WHEN REPLACING ECM

ADDITIONAL SERVICE WHEN REPLACING ECM

Description

INFOID:0000000009753127

When replacing ECM, the following procedure must be performed. (For details, refer to 

EC-140, "Work Proce-

dure"

.)

PROGRAMMING OPERATION

NOTE:
After replacing with a blank ECM, programming is required to write ECM information. Be sure to follow the pro-
cedure to perform the programming.

Work Procedure

INFOID:0000000009753128

1.

SAVE ECM DATA

With CONSULT

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Turn ignition switch ON.

4.

Select “SAVING DATA FOR REPLC CPU” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

5.

Follow the instruction of CONSULT display.

NOTE:
• Necessary data in ECM is copied and saved to CONSULT.
• Go to Step 2 regardless of with or without success in saving data.

>> GO TO 2.

2.

CHECK ECM PART NUMBER

Check ECM part number to see whether it is blank ECM or not.
NOTE:
• Part number of blank ECM is 23703 - 

×××××

.

• Check part number when ordering ECM or the one included in the label on the container box.
Is the ECM a blank ECM?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

SAVE ECM PART NUMBER

Read out the part number from the old ECM and save the number, following the programming instructions.
Refer to “CONSULT Operation Manual”.
NOTE:
• The ECM part number is saved in CONSULT.
• Even when ECM part number is not saved in CONSULT, go to 4.

>> GO TO 4.

4.

PERFORM ECM PROGRAMMING

After replacing ECM, perform the ECM programming. Refer to “CONSULT Operation Manual”.
NOTE:
• Refer to 

EC-561, "Removal and Installation"

 for replacement of ECM.

• During programming, maintain the following conditions:
- Ignition switch: ON
- Electric load: OFF
- Brake pedal: Not depressed
- Battery voltage: 12 - 13.5 V (Be sure to check the value of battery voltage by selecting “BATTERY VOLT” in

“Data monitor” of CONSULT.)

>> GO TO 6.

5.

REPLACE ECM

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ADDITIONAL SERVICE WHEN REPLACING ECM

EC-141

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Replace ECM. Refer to 

EC-561, "Removal and Installation"

.

>> GO TO 6.

6.

PERFORM INITIALIZATION OF NVIS (NATS) SYSTEM AND REGISTRATION OF ALL NVIS (NATS) IGNI-

TION KEY IDS

Refer to 

SEC-47, "ECM : Work Procedure"

 (with intelligent key system) or 

SEC-156, "ECM : Work Procedure"

(without intelligent key system).

>> GO TO 7.

7.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to 

EC-143, "Work Procedure"

.

>> GO TO 8.

8.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-144, "Work Procedure"

.

>> GO TO 9.

9.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-145, "Work Procedure"

.

>> GO TO 10.

10.

PERFORM G SENSOR CALIBRATION

Refer to 

EC-147, "Work Procedure"

.

>> END

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EC-142

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VIN REGISTRATION

VIN REGISTRATION

Description

INFOID:0000000010304580

VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

Work Procedure

INFOID:0000000010304581

1.

CHECK VIN

Check the VIN of the vehicle and note it. Refer to 

GI-38, "Information About Identification or Model Code"

.

>> GO TO 2.

2.

PERFORM VIN REGISTRATION

With CONSULT

1.

Turn ignition switch ON and engine stopped.

2.

Select “VIN REGISTRATION” in “WORK SUPPORT” mode of “ENGINE”.

3.

Follow the instruction of CONSULT display.

>> END

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ACCELERATOR PEDAL RELEASED POSITION LEARNING

EC-143

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ACCELERATOR PEDAL RELEASED POSITION LEARNING

Description

INFOID:0000000009753129

Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each
time harness connector of accelerator pedal position sensor or ECM is disconnected.

Work Procedure

INFOID:0000000009753130

1.

START

1.

Make sure that accelerator pedal is fully released.

2.

Turn ignition switch ON and wait at least 2 seconds.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Turn ignition switch ON and wait at least 2 seconds.

5.

Turn ignition switch OFF and wait at least 10 seconds.

>> END

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EC-144

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THROTTLE VALVE CLOSED POSITION LEARNING

THROTTLE VALVE CLOSED POSITION LEARNING

Description

INFOID:0000000009753131

Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time the harness con-
nector of the electric throttle control actuator or ECM is disconnected or electric throttle control actuator inside
is cleaned.

Work Procedure

INFOID:0000000009753132

1.

START

With CONSULT

1.

Turn ignition switch ON.

2.

Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

3.

Follow the instructions on the CONSULT display.

4.

Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.

Without CONSULT

1.

Start the engine.
NOTE:
Engine coolant temperature is 25

°

C (77

°

F) or less before engine starts.

2.

Warm up the engine.
NOTE:
Raise engine coolant temperature until it reaches 65

°

C (149

°

F) or more.

3.

Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.

>> END

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IDLE AIR VOLUME LEARNING

EC-145

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IDLE AIR VOLUME LEARNING

Description

INFOID:0000000009753133

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps each engine idle speed
within the specific range. It must be performed under any of the following conditions:
• Each time electric throttle control actuator or ECM is replaced.
• Idle speed or ignition timing is out of specification.

Work Procedure

INFOID:0000000009753134

1.

PRECONDITIONING

Make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
• Battery voltage: More than 12.9 V (At idle)
• Engine coolant temperature: 70 - 100

°

C (158 - 212

°

F)

• Selector lever : P or N (CVT), Neutral (M/T)
• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime running light systems, set lighting switch to the 1st position to
light only small lamps.

• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- CVT models
•

With CONSULT: Drive vehicle until “ATF TENP SEN” in “DATA MONITOR” mode of “CVT” system indi-

cates less than 0.9 V.

•

Without CONSULT: Drive vehicle for 10 minutes.

- M/T models
• Drive vehicle for 10 minutes.

Do you have CONSULT?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

IDLE AIR VOLUME LEARNING

With CONSULT

1.

Perform Accelerator Pedal Released Position Learning. Refer to 

EC-143, "Work Procedure"

.

2.

Perform Throttle Valve Closed Position Learning. Refer to 

EC-144, "Work Procedure"

.

3.

Start engine and warm it up to normal operating temperature.

4.

Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode of “ENGINE”.

5.

Touch “START” and wait 20 seconds.

Is “CMPLT” displayed on CONSULT screen?

YES

>> GO TO 4.

NO

>> GO TO 5.

3.

IDLE AIR VOLUME LEARNING

Without CONSULT

NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has

a malfunction.

1.

Perform Accelerator Pedal Released Position Learning. Refer to 

EC-143, "Work Procedure"

.

2.

Perform Throttle Valve Closed Position Learning. Refer to 

EC-144, "Work Procedure"

.

3.

Start engine and warm it up to normal operating temperature.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

6.

Repeat the following procedure quickly five times within 5 seconds.

-

Fully depress the accelerator pedal.

-

Fully release the accelerator pedal.

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EC-146

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IDLE AIR VOLUME LEARNING

7.

Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.

8.

Fully release the accelerator pedal within 3 seconds after the MIL turned ON.

9.

Start engine and let it idle.

10. Wait 20 seconds.

>> GO TO 4

4.

CHECK IDLE SPEED AND IGNITION TIMING

Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifi-
cations. For specification, refer to 

EC-562, "Idle Speed"

 and 

EC-562, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following
• Check that throttle valve is fully closed.
• Check PCV valve operation.
• Check that downstream of throttle valve is free from air leakage.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning part.

6.

DETECT MALFUNCTIONING PART

Engine component parts and their installation condition are questionable. Check and eliminate the cause of
the incident.
It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to 

EC-163, "Description"

.

If any of the following conditions occur after the engine has started, eliminate the cause of the incident and
perform Idle Air Volume Learning all over again:
• Engine stalls.
• Erroneous idle.

>> INSPECTION END

SEC897C

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G SENSOR CALIBRATION

EC-147

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G SENSOR CALIBRATION

Description

INFOID:0000000009753135

ECM stores calibration data (inherent characteristic value) of G sensor to provide accurate control. Therefore,
it is required to perform calibration of G sensor after the following work is performed.
• Removal/installation or replacement of G sensor 
• Replacement of ECM

Work Procedure

INFOID:0000000009753136

1.

PREPARATION BEFORE CALIBRATION PROCEDURE

1.

Park the vehicle on a level surface.

2.

Adjust air pressure of all tires to the specified pressure. 

WT-54, "Tire Air Pressure"

. 

>> GO TO 2.

2.

PERFORM CALIBRATION

With CONSULT

1.

Turn ignition switch ON.

CAUTION:

Never start engine.

2.

Select “Work Support” mode in “ENGINE.

3.

Select “G SENSOR CALIBRATION”.

4.

Touch “Start”.

CAUTION:

Never swing the vehicle during “G sensor calibration”. 

Is “COMPLETED” displayed? 

YES

>> END

NO

>> Perform steps 1 and 2 again.

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EC-148

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MIXTURE RATIO SELF-LEARNING VALUE CLEAR

MIXTURE RATIO SELF-LEARNING VALUE CLEAR

Description

INFOID:0000000009753137

This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-
tions in “Diagnosis Procedure”.

Work Procedure

INFOID:0000000009753138

1.

START

With CONSULT

1.

Start engine and warm it up to normal operating temperature.

2.

Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

3.

Clear mixture ratio self-learning value by touching “CLEAR”.

With GST

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

3.

Disconnect mass air flow sensor harness connector.

4.

Restart engine and let it idle for at least 5 seconds.

5.

Stop engine and reconnect mass air flow sensor harness connector.

6.

Select Service $03 with GST. Make sure DTC P0102 is detected.

7.

Select Service $04 with GST to erase the DTC P0102.

>> END

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FUEL PRESSURE

EC-149

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FUEL PRESSURE

Work Procedure

INFOID:0000000009753139

FUEL PRESSURE RELEASE

1.

FUEL PRESSURE RELEASE

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

3.

Start engine.

4.

After engine stalls, crank it two or three times to release all fuel pressure.

5.

Turn ignition switch OFF.

Without CONSULT

1.

Remove fuel pump fuse located in IPDM E/R.

2.

Start engine.

3.

After engine stalls, crank it two or three times to release all fuel pressure.

4.

Turn ignition switch OFF.

5.

Reinstall fuel pump fuse after servicing fuel system.

>> END

FUEL PRESSURE CHECK

CAUTION:

• Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
• The fuel hose connection method used when taking fuel pressure check must not be used for other

purposes.

• Be careful not to scratch or put debris around connection area when servicing, so that the quick

connector maintains sealability with O-rings inside.

• Do not perform fuel pressure check with electrical systems operating (i.e. lights, rear defogger, A/C,

etc.) Fuel pressure gauge may indicate false readings due to varying engine load and changes in
manifold vacuum.

NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pres-
sure cannot be completely released because F15 models do not have fuel return system.

1.

FUEL PRESSURE CHECK

1.

Release fuel pressure to zero.

2.

Prepare fuel hose for fuel pressure check (B) and fuel tube
adapter [SST: KV10120000] (D), then connect fuel pressure
gauge (A).

CAUTION:

•  Use suitable fuel hose for fuel pressure check (genuine

NISSAN fuel hose without quick connector).

• To avoid unnecessary force or tension to hose, use mod-

erately long fuel hose for fuel pressure check.

• Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
• Use Pressure Gauge to check fuel pressure.

3.

Remove fuel hose.

CAUTION:

Do not twist or kink fuel hose because it is plastic hose.

: To quick connector

: To high pressure fuel pump

C

:  Clamp

PBIB2982E

Revision: 2013 October

2014 JUKE