Nissan X-Trail 32. Manual - part 916

REFRIGERANT PRESSURE SENSOR

EC-793

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

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EC

N

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4.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT

1.

Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.

2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor. Refer to 

HAC-131, "Removal and Installation"

 (with auto-

matic air conditioning) or 

HAC-225, "Removal and Installation"

 (with manual air conditioning).

NO

>> Repair or replace error-detected parts.

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

F42

1

E60

124

Existed

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

F42

2

E60

103

Existed

EC-794

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

SENSOR POWER SUPPLY2 CIRCUIT

SENSOR POWER SUPPLY2 CIRCUIT

Description

INFOID:0000000010986504

ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously
in the sensors belonging to the same group as the short-circuited sensor.

Sensor power supply 1

• APP sensor 1
• CKP sensor (POS)
• Intake manifold runner control valve position sensor
• Refrigerant pressure sensor
• TP sensor
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.

Sensor power supply 2

• APP sensor 2
• CMP sensor (PHASE)
• EVT control position sensor
• EOP sensor
• MAF sensor

Diagnosis Procedure

INFOID:0000000010986505

1.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1

1.

Turn ignition switch OFF.

2.

Disconnect accelerator pedal position (APP) sensor harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-2

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between APP sensor harness connector and ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit.

3.

CHECK SENSOR POWER SUPPLY 2 CIRCUIT

1.

Disconnect following sensors harness connector.

2.

Check harness for short to power and short to ground, between the following terminals.

+

-

Voltage

(Approx.)

APP sensor

Connector

Terminal

E110

5

Ground

 5V

+

+

Continuity

APP sensor

ECM

Connector

Terminal

Connector

Terminal

E110

5

E60

118

Existed

SENSOR POWER SUPPLY2 CIRCUIT

EC-795

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

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F

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EC

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Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair short to ground or short to power in harness or connectors.

4.

CHECK COMPONENTS

Check the following.
• APP sensor 2 (Refer to 

EC-761, "Component Inspection"

.)

• Camshaft position sensor (PHASE) (Refer to 

EC-681, "Component Inspection (Camshaft position sensor)"

.)

• EVT control position sensor (Refer to 

EC-715, "Component Inspection"

.)

• EOP sensor (Refer to

EC-694, "Component Inspection"

.)

• MAF sensor (Refer to 

EC-607, "Component Inspection"

.)

Is the inspection result normal?

YES

>> Refer to 

GI-44, "Intermittent Incident"

.

NO

>> Replace malfunctioning component.

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F85

32

CMP sensor (PHASE)

F105

1

36

MAF sensor

F110

1

40

EOP sensor

F106

3

44

EVT control position sensor

F104

1

E60

118

APP sensor 2

E110

5

EC-796

< SYMPTOM DIAGNOSIS >

[QR25DE]

ENGINE CONTROL SYSTEM

SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM

Symptom Table

INFOID:0000000010986506

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Reference 

page

HARD/NO ST

AR

T

/REST

AR

T

 (EXCP

. 

H

A

)

ENGINE ST

ALL

HESIT

A

TION/SURGING/FLA

T

 SPOT

SP

ARK KNOCK/DET

O

NA

TION

LACK

 OF POWER/

POOR 

ACC

E

LERA

TION

HIGH IDL

E

/LOW

 IDLE

ROUG

H IDLE/HUNTING

IDLI

NG VIBRA

T

ION

SLOW/NO RETURN T

O

 IDLE

OVERHEA

T

S/W

A

TER TEMPERA

T

UR

E

 HIGH

EXCESS

IVE F

U

E

L

 CONSUMP

T

IO

N

EXCESS

IVE OIL CONSUMP

T

ION

BA

TTER

Y

 DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

Fuel

Fuel  pump  circuit

1

1

2

3

2

2

2

3

2

EC-782

Fuel  pressure  regulator  system

3

3

4

4

4

4

4

4

4

4

EC-558

Fuel  injector  circuit

1

1

2

3

2

2

2

2

EC-779

Evaporative  emission  system

3

3

4

4

4

4

4

4

4

4

EC-804

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-805

Incorrect idle speed adjustment

1

1

1

1

1

EC-555

Electric  throttle  control  actuator

1

1

2

3

3

2

2

2

2

2

2

EC-750

, 

EC-755

Ignition

Incorrect  ignition  timing  adjustment

3

3

1

1

1

1

1

1

EC-803

Ignition  circuit

1

1

2

2

2

2

2

2

EC-785

Main  power  supply  and  ground  circuit

2

2

3

3

3

3

3

2

3

EC-573

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-605

Intake air temperature sensor circuit

EC-609

Engine coolant temperature sensor circuit

3

3

3

EC-612

Air fuel ratio (A/F) sensor 1 circuit

EC-618

, 

EC-622

, 

EC-625

, 

EC-647

Throttle position sensor circuit

2

2

EC-615

, 

EC-665

, 

EC-721

, 

EC-722

, 

EC-763

Accelerator pedal position sensor circuit

3

2

1

EC-757

, 

EC-760

, 

EC-766