Nissan X-Trail 32. Manual - part 766

P0087, P0088, P0090 FRP CONTROL SYSTEM

EC-193

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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P0087, P0088, P0090 FRP CONTROL SYSTEM

DTC Description

INFOID:0000000010775122

DTC DETECTION LOGIC

NOTE:
DTC P0087, P0088 or P0090 may be displayed when running out of gas.

POSSIBLE CAUSE

• Harness or connectors
- The high pressure fuel pump circuit is open or shorted.
- The low pressure fuel pump circuit is open or shorted.
• High pressure fuel pump
• High pressure fuel pump system
• Low  pressure fuel pump
• Low  pressure fuel pump system
• Fuel pressure regulator
• Fuel rail pressure sensor
• Incorrect hose connection
• Out of gas

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P0087, P0088 or P0090 is displayed with DTC P1197, first perform the trouble diagnosis for DTC
P1197.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

EC-331, "DTC Description"

.

NO

>> GO TO 2.

2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0087

LOW FUEL PRES

The following condition continues for 5 seconds or more after engine start.
• Target fuel pressure

−

 Actual fuel pressure > 2.7 MPa

P0088

HIGH FUEL PRES

The following condition continues for 5 seconds or more after engine start.
• Actual fuel pressure 

−

 Target fuel pressure > 2.7 MPa

P0090

FUEL PRESSURE CONTROL FUNCTION

The following condition continues for 5 seconds or more after engine start.
• Fuel rail pressure remains at 1.1 MPa or less. 
• Fuel rail pressure remains at 18.5 MPa or more.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation 
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This 
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Combustion 
control mode

Stratified charge 
combustion 
control at start-
ing

No stratified charge combustion at starting (cold start).

EC-194

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0087, P0088, P0090 FRP CONTROL SYSTEM

>> GO TO 3.

3.

DTC CONFIRMATION PROCEDURE-1

1.

Check that the fuel tank is 1/8 full of fuel.

2.

Warm up the engine to the normal operating temperature and keep the engine speed at idle for 15 sec-
onds.
NOTE:
Warm up the engine until “COOLAN TEMP/S” on “DATA MONITOR” of CONSULT reaches at least 70

°

C

(158

°

F).

3.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-190, "Diagnosis Procedure"

.

NO

>> GO TO 4.

4.

DTC CONFIRMATION PROCEDURE-2

1.

Cool the engine until the engine coolant temperature reaches 60

°

C (140

°

F) or less.

2.

Start the engine and wait at least 40 seconds.

3.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-190, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010775123

1.

CHECK DTC PRIORITY

If DTC P0087, P0088 or P0090 is displayed with DTC P1197, first perform the trouble diagnosis for DTC
P1197.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

EC-331, "DTC Description"

.

NO

>> GO TO 2.

2.

CHECK HIGH PRESSURE FUEL PUMP

Refer to 

EC-194, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace high pressure fuel pump. Refer to 

EM-43, "Removal and Installation"

.

3.

CHECK FUEL LEAKAGE

1.

Start the engine.

2.

Visually check that the fuel pump, fuel rail, and fuel piping have no fuel leakage.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000010775124

1.

CHECK HIGH PRESSURE FUEL PUMP-1

1.

Turn ignition switch OFF.

2.

Disconnect high pressure fuel pump harness connector.

3.

Check the resistance between high pressure fuel pump terminals as follows.

P0087, P0088, P0090 FRP CONTROL SYSTEM

EC-195

< DTC/CIRCUIT DIAGNOSIS >

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Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace high pressure fuel pump. Refer to  

EM-43, "Removal and Installation"

.

2.

CHECK HIGH PRESSURE FUEL PUMP-2

WITH CONSULT

1.

Reconnect high pressure fuel pump harness connector.

2.

Start the engine.

3.

Check “FUEL PRES SEN” in “DATA MONITOR” of “ENGINE” with CONSULT.

WITHOUT CONSULT

1.

Start the engine.

2.

Check fuel rail pressure sensor signal voltage.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure fuel pump. Refer to  

EM-43, "Removal and Installation"

.

High pressure fuel pump

Condition

Resistance

+

−

Terminal

1

2

Temperature 

°

C (

°

F)

20 – 30 (68 
– 86)

0.46 - 0.51 

Ω

Data monitor item

Condition

Voltage

(Approx.)

FUEL PRES SEN V

Engine speed: idle

820 – 1,140 mV

Engine speed: Revving engine 
from idle to 4,000 rpm

820 – 2,900 mV

+

Ground

Condition

Voltage

(Approx.)

Fuel rail pressure sensor

Connector

Terminal

F62

2

Ground

Engine speed: idle

0.82 – 1.14 V

Engine speed: Revving engine 
from idle to 4,000 rpm

0.82 – 2.9 V

EC-196

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0102, P0103 MAF SENSOR

P0102, P0103 MAF SENSOR

DTC Description

INFOID:0000000010775125

DTC DETECTION LOGIC

POSSIBLE CAUSE

P0102

• Harness or connectors [The mass air flow sensor (bank 1) circuit is open or shorted.]
• Intake air leaks
• Mass air flow sensor

P0103

• Harness or connectors [The mass air flow sensor (bank 1) circuit is open or shorted.]
• Mass air flow sensor

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0102

MAF SEN/CIRCUIT-B1
(Mass or volume air flow “A” circuit low)

An excessively low voltage from the sensor is sent to ECM during engine 
running.

P0103

MAF SEN/CIRCUIT-B1
(Mass or volume air flow “A” circuit high)

An excessively high voltage from the sensor is sent to ECM.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation 
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This 
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Engine output 
control

ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle 
speed to encourage the driver to repair malfunction.

Device fix mode

• This mode fixes the IVT control solenoid valve and the EVT control solenoid valve in the refer-

ence position.

• The intake manifold runner control valve motor is turned OFF (intake manifold runner control 

valve opens).

Combustion 
control mode

Stratified charge 
combustion 
control at start-
ing

No stratified charge combustion at starting (cold start).

Idle speed con-
trol

Stops feedback control of idle speed and controls with specified speed.

Recovery speed 
control at decel-
erating

Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.

Idle neutral con-
trol

Stops idle neutral control.

Ignition timing 
correction con-
trol

Partially controls ignition timing control.

Retardation 
control

Controls ignition timing delay control in the intermediate water temperature range.