Nissan Qashqai J11. Manual — part 520

EC9-236

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0403 EGR VOLUME CONTROL VALVE

P0403 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010309164

DTC DETECTION LOGIC

NOTE:
If DTC P0380 is displayed with DTC P0641, first perform the trouble diagnosis for DTC P0641 Refer to

EC9-108, "DTC Index"

.

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 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to

EC9-236, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010502693

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check high pressure EGR volume control valve harness connector connection.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check high pressure EGR volume control valve circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P0403

EGR VLV CMD CIRC
(Exhaust gas recircula-
tion “A” control circuit)
• 1.DEF: —
• 2.DEF: OPERATION

TEMPERATURE TOO
HIGH

• ECM detects high Pressure EGR volume control

valve command circuit is short to ground.

• ECM detects high Pressure EGR volume control

valve command circuit is short to power.

• ECM detects an over temperature of high Pressure

EGR volume control valve.

• Harness or connectors

(High Pressure EGR volume control
valve command circuit is open or
shorted.)

• High Pressure EGR volume control

valve

P0403 EGR VOLUME CONTROL VALVE

EC9-237

< 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 5.

NO

>> Repair or replace error-detected parts.

5.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to

EC9-236, "DTC Logic"

.

Is the DTC P0403 displayed again?

YES

>> GO TO 6.

NO

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

6.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to

EC9-237, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts.

Component Inspection (High Pressure EGR Volume Control Valve Motor)

INFOID:0000000010309166

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect high pressure EGR volume control valve harness connector.

3.

Check resistance between high pressure EGR volume control valve terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure EGR volume control valve.

+

-

Continuity

ECM

High pressure EGR volume

control valve

Connector

Terminal

Connector

Terminal

F83

144

F14

1

Existed

148

2

High pressure EGR volume

control valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35

Ω

EC9-238

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

DTC Logic

INFOID:0000000010309167

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 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to

EC9-238, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309168

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check high pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE POSITION SENSOR CIRCUIT FOR OPEN

AND SHORT

1.

Turn ignition switch OFF.

2.

Check high pressure EGR volume control valve position sensor circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0409

EGR VALVE POSITION SEN CIRC
(Exhaust gas recirculation sensor
“A” circuit)
• 1.DEF: SIGNAL INCOHERENCE

• A Voltage of high Pressure EGR

volume control valve position sen-
sor remains more than 4.5 V.

• A Voltage of high Pressure EGR

volume control valve position sen-
sor remains less than 0.5 V.

• Harness or connectors

(High pressure EGR volume control valve
control position sensor circuit is open or
shorted.)

• High pressure EGR volume control valve

control position sensor

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

EC9-239

< 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

>> Replace High pressure EGR volume control valve.

NO

>> Repair or replace error-detected parts.

+

-

Continuity

ECM

High pressure EGR volume

control valve

Connector

Terminal

Connector

Terminal

F83

106

F14

6

Existed

108

4

110

5