Nissan Qashqai J11. Manual - part 523

 

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Nissan Qashqai J11. Manual - part 523

 

 

EC9-248

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0530 REFRIGERANT PRESSURE SENSOR

P0530 REFRIGERANT PRESSURE SENSOR

DTC Logic

INFOID:0000000010309189

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 2 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC9-248, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309190

1.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect refrigerant pressure sensor harness connector.

2.

Check the voltage between refrigerant pressure sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

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

2.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 1 minute.

2.

Disconnect ECM harness connector.

3.

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

4.

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

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0530

RFRG TEMP PRESS SEN VOLT
(A/C refrigerant pressure sensor “A” 
circuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• Refrigerant pressure sensor signal 

voltage remains more than 4.75 V 
for 2 seconds or more.

• Refrigerant pressure sensor signal 

voltage remains less than 0.1 V for 2 
seconds or more.

• Harness or connectors

(Refrigerant pressure sensor circuit is 
open or shorted.)

• Refrigerant pressure sensor

+

-

Voltage

(Approx.)

Refrigerant pressure sensor

Connector

Terminal

E41

3

Ground

5.0 V

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

E41

1

F83

141

Existed

P0530 REFRIGERANT PRESSURE SENSOR

EC9-249

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

2.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor.

NO

>> Repair or replace.

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

E41

2

F83

137

Existed

EC9-250

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0544 EGT SENSOR 1

P0544 EGT SENSOR 1

DTC Logic

INFOID:0000000010309191

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0544 can not duplicate.

>> Proceed to 

EC9-250, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309192

1.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1 HARNESS CONNECTOR CONNECTIONS

Check exhaust gas temperature sensor 1 control valve harness connector connection.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1 CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check exhaust gas temperature sensor 1 circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1

Refer to 

EC9-251, "Component Inspection (Exhaust Gas Temperature Sensor 1)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts. 

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0544

TBN UPSTR TEMP SEN CIRC
(Exhaust gas temperature sensor cir-
cuit bank 1 sensor 1)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• An excessively low voltage from Ex-

haust Gas Temperature sensor is 
sent to ECM for 15 seconds or 
more.

• An excessively high voltage from 

Exhaust Gas Temperature sensor is 
sent to ECM for 1 second or more.

• Harness or connectors

(Exhaust gas temperature sensor 1 
circuit is open or shorted.)

• Exhaust gas temperature sensor 1

+

-

Continuity

ECM

EGT sensor 1

Connector

Terminal

Connector

Terminal

F83

134

F150

1

Existed

150

2

P0544 EGT SENSOR 1

EC9-251

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Component Inspection (Exhaust Gas Temperature Sensor 1)

INFOID:0000000010309193

1.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1

1.

Reconnect all harness connectors disconnected.

2.

Start the engine.

3.

Select “TEMP UPSTREAM TURBINE” in “DATA MONITOR” mode of “ENGINE” with CONSULT.

4.

Maintain the following conditions for at least 2 minutes and check the monitor status “TEMP UPSTREAM
TURBINE”.

Does the value of the exhaust gas temperature sensor 1 vary?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace exhaust gas temperature sensor 1.

Engine speed

Approx. 2,500 rpm

Engine coolant temperature

More than 80

°

C

 

 

 

 

 

 

 

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