Nissan March K13. Manual - part 209

REFRIGERANT PRESSURE SENSOR

EC-297

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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REFRIGERANT PRESSURE SENSOR

Component Function Check

INFOID:0000000005989409

1.

CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

1.

Start engine and warm it up to normal operating temperature.

2.

Turn A/C switch and blower fan switch ON.

3.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-297, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005989410

1.

CHECK GROUND CONNECTION

1.

Turn A/C switch and blower fan switch OFF.

2.

Stop engine.

3.

Turn ignition switch OFF.

4.

Check ground connection E38. Refer to Ground Inspection in 

GI-35, "Circuit Inspection"

. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect refrigerant pressure sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between refrigerant pressure sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor

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

4.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

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

ECM

Voltage

Connector

+

−

Terminal

Terminal

F8

41

(Refrigerant pressure sensor signal)

48

1.0 - 4.0V

Refrigerant pressure sensor

Ground

Voltage

Connector

Terminal

E49

3

Ground

Approx. 5 V

EC-298

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

REFRIGERANT PRESSURE SENSOR

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor

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

6.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor

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

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-33, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor.

NO

>> Repair or replace. 

Refrigerant pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E49

1

F8

48

Existed

Refrigerant pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E49

2

F8

41

Existed

ENGINE CONTROL SYSTEM SYMPTOMS

EC-299

< SYMPTOM DIAGNOSIS >

[HR12DE (TYPE 1)]

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SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000005989414

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-287, 
"Compo-
nent Func-
tion Check"

Fuel  pressure  regulator  system

3

3

4

4

4

4

4

4

4

4

EC-113, 
"Work Pro-
cedure"

Fuel  injector  circuit

1

1

2

3

2

2

2

2

EC-285, 
"Compo-
nent Func-
tion Check"

Evaporative  emission  system

3

3

4

4

4

4

4

4

4

4

EC-41, 
"EVAPO-
RATIVE 
EMISSION 
SYSTEM : 
System 
Descrip-
tion"

EC-300

< SYMPTOM DIAGNOSIS >

[HR12DE (TYPE 1)]

ENGINE CONTROL SYSTEM SYMPTOMS

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-15, 
"Positive 
Crankcase 
Ventilation"

Incorrect idle speed adjustment

1

1

1

1

1

EC-109, 
"Work Pro-
cedure"

Electric  throttle  control  actuator

1

1

2

3

3

2

2

2

2

2

2

EC-260, 
"DTC Log-
ic"
EC-264, 
"DTC Log-
ic"
EC-266, 
"DTC Log-
ic"

Ignition

Incorrect  ignition  timing  adjustment

3

3

1

1

1

1

1

1

EC-309, 
"Inspec-
tion"

Ignition  signal  circuit

1

1

2

2

2

2

2

2

EC-291, 
"Diagnosis 
Procedure"

EGR

EGR volume control valve circuit

2

2

3

3

3

2

2

3

3

EC-206, 
"DTC Log-
ic"

EGR system

2

1

EC-203, 
"DTC Log-
ic"

, 

EC-

239, "DTC 
Logic"

Main power supply and ground circuit

2

2

3

3

3

3

3

2

3

EC-123, 
"Diagnosis 
Procedure"

SYMPTOM

Reference 
page

HARD/NO S

T

A

R

T/RES

T

A

R

T (E

XCP

. HA)

E

N

GINE

 ST

ALL

HES

IT

A

TION/SURGING/FLA

T

 SPOT

S

P

ARK KNOC

K

/DET

O

NA

TI

ON

LACK OF 

POWER/POOR ACCELERA

TION

HIG

H

 IDL

E

/L

OW

 ID

LE

ROUGH IDLE/HUNTING

ID

LING VI

BRA

T

ION

S

L

OW/NO RETU

RN 

T

O

 ID

LE

OVERHEA

T

S

/W

A

TER TEMPERA

T

URE HIG

H

E

X

CESSIVE

 FUEL CON

S

UMP

T

ION

E

X

CESSIVE

 OIL 

C

O

NSUMP

T

ION

B

A

TTER

Y 

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA