Qashqai J11. Engine control system (K9K) - part 20

 

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Qashqai J11. Engine control system (K9K) - part 20

 

 

P1483 EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR

ECK-305

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Perform trouble diagnosis for power supply circuit.

4.

CHECK EXHAUST THROTTLE CONTROL ACTUATOR CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check exhaust electric throttle control actuator circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK EXHAUST THROTTLE POSITION SENSOR

Refer to 

ECK-305, "Component Inspection (Exhaust Throttle Position Sensor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> GO TO 6.

6.

REPLACE EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace exhaust electric throttle control actuator.

2.

Perform 

ECK-137, "Work Procedure"

.

>> INSPECTION END

Component Inspection (Exhaust Throttle Position Sensor)

INFOID:0000000010289933

1.

CHECK EXHAUST THROTTLE POSITION SENSOR

1.

Turn ignition switch ON.

2.

Check the voltage between ECM terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust electric throttle control actuator.

+

+

Continuity

ECM

Exhaust electric throttle 

control actuator

Connector

Terminal

Connector

Terminal

F80

57

F59

1

Existed

62

2

76

3

F81

149

6

150

5

ECM

Voltage

+

-

Terminal

76

62

0.2 – 4.8 V

ECK-306

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010289934

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.

Start engine.

2.

Maintain the following conditions for at least 10 consecutive seconds. Hold the steady as possible.

3.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECK-306, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010289935

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

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

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1484

HIGH PRESSURE EGR 
VALVE
(High pressure EGR valve)
• 1.DEF: MECHANICAL 

FAULT

ECM detects an incorrect closed position of the low 
pressure EGR volume control valve.

• Low pressure EGR volume 

control valve clogged

• Low pressure EGR volume 

control valve stuck

• Low pressure EGR volume 

control valve

ENGINE SPEED

3,500 rpm

P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

ECK-307

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

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

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-306, "DTC Logic"

.

Is the DTC P1484 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-307, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010289936

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-308

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1485 LOW PRESSURE EGR VOLUME CONTROL VALVE

P1485 LOW PRESSURE EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010289937

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 

ECK-308, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010508573

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check low pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

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

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1485

LOW PRESSURE EGR 
VALVE COMMAND CIRCUIT
(Low pressure EGR valve 
command circuit) 
• 1.DEF: —
• 2.DEF: OPERATION TEM-

PERATURE TOO HIGH

• ECM detects low pressure EGR volume control 

valve circuit is short circuit to ground.

• ECM detects low pressure EGR volume control 

valve circuit is short circuit to battery.

• Low pressure EGR volume control valve circuit 

temperature is too high.

• Harness or connectors

(Low pressure EGR volume control 
valve circuit is shorted.)

• Low pressure EGR volume control 

valve

P1485 LOW PRESSURE EGR VOLUME CONTROL VALVE

ECK-309

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-308, "DTC Logic"

.

Is the DTC P1485 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-315, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010508574

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-310

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1486 LOW PRESSURE EGR VOLUME CONTROL VALVE POSITION SENSOR

P1486 LOW PRESSURE EGR VOLUME CONTROL VALVE POSITION
SENSOR

DTC Logic

INFOID:0000000010289940

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 

ECK-310, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010508575

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

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

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1486

LOW PRES EGR VALVE PO-
SITION SENSOR
(Low pressure EGR valve po-
sition sensor)
• 1.DEF:SIGNAL INCOHER-

ENCE

• An excessively high voltage (more than 4.7 

V) from low pressure EGR volume control 
valve position sensor is sent to ECM.

• An excessively low voltage (less than 0.3 V) 

from low pressure EGR volume control 
valve position sensor is sent to ECM.

• Harness or connectors

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

• Low pressure EGR volume control 

valve position sensor

P1486 LOW PRESSURE EGR VOLUME CONTROL VALVE POSITION SENSOR

ECK-311

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

5.

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

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-310, "DTC Logic"

.

Is the DTC P1486 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-315, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010508576

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-312

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1487 LOW PRESSURE EGR VOLUME CONTROL VALVE

P1487 LOW PRESSURE EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010289943

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 

ECK-312, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010508577

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check low pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1487

LOW PRESSURE EGR 
VALVE POSITION OFFSET
(Low pressure EGR valve po-
sition offset)
• 1.DEF: OFFSET IMPLAU-

SIBLE

ECM detects the low pressure EGR vol-
ume control valve regulation error.

• Harness or connectors

(Low pressure EGR volume control valve 
circuit is open or shorted.)

• Low pressure EGR volume control valve 

stuck

• Low pressure EGR volume control valve
• Low pressure EGR volume control valve 

position sensor

P1487 LOW PRESSURE EGR VOLUME CONTROL VALVE

ECK-313

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

5.

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

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-312, "DTC Logic"

.

Is the DTC P1487 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-313, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010508578

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-314

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1488 LOW PRESSURE EGR VOLUME CONTROL VALVE

P1488 LOW PRESSURE EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010289946

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 3 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECK-314, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010508580

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check low pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1488

LOW PRESSURE EGR 
VALVE BLOCKED
(Low pressure EGR valve 
blocked)
• 1.DEF: NO RESPONSE 

FROM THE VALVE MOTOR

• 2.DEF: CLOSING OF AIR 

INLET FLAP

Low pressure EGR volume control 
valve does not operate.

• Harness or connectors

(Low pressure EGR volume control valve circuit 
is open or shorted.)

• Low pressure EGR volume control valve
• Low pressure EGR volume control valve position 

sensor

P1488 LOW PRESSURE EGR VOLUME CONTROL VALVE

ECK-315

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

5.

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

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-314, "DTC Logic"

.

Is the DTC P1488 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-315, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010508581

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-316

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1489 LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM TEM-

PERATURE SENSOR

P1489 LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM
TEMPERATURE SENSOR

DTC Logic

INFOID:0000000010289949

DTC DETECTION LOGIC

NOTE:
If DTC P1489 is displayed with following DTC, first perform the trouble diagnosis for following DTC.
Refer to 

ECK-97, "DTC Index"

.

• P1480, P1481, P1482, P1483, P1484, P1485, P1486, P1487 and P1488.

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 5 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECK-316, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010508590

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE

Visually check low 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 DIESEL PARTICULATE FILTER

Refer to 

ECK-359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

3.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.
Is the inspection result normal?

YES

>> GO TO 4.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1489

LOW PRESSURE EGR 
VALVE TEMPERATURE SEN-
SOR
(Low pressure EGR valve tem-
perature sensor)
• 1.DEF: VOLTAGE TOO 

LOW

• 2.DEF: VOLTAGE TOO 

HIGH

• 3.DEF: OPERATION TEM-

PERATURE TOO HIGH

• ECM detects a short circuit to battery.
• ECM detects a short circuit to ground.
• EGR cooler (low pressure) tempera-

ture is 180 

°

C (356

°

F) or more.

• Harness or connectors

(EGR temperature sensor circuit is short-
ed.)

• EGR temperature sensor

P1489 LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM TEM-

PERATURE SENSOR

ECK-317

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

NO

>> Repair or replace error-detected parts.

4.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check low pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

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

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

ECK-316, "DTC Logic"

.

Is the DTC P1489 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

ECK-317, "Component Inspection (Low 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 (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010508591

1.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect low pressure EGR volume control valve harness connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR volume control valve.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F80

65

F34

1

Existed

66

2

79

3

F81

151

6

152

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.69 

Ω

ECK-318

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1503 ACTIVE GRILLE SHUTTER

P1503 ACTIVE GRILLE SHUTTER

DTC Logic

INFOID:0000000010434271

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been preciously 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

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Check DTC.

Is the DTC detected?

YES

>> Proceed to 

ECK-318, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-2

1.

Start the engine and wait at least 60 seconds.

2.

Check DTC.

Is the DTC detected?

YES

>> Proceed to 

ECK-318, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010513119

1.

CHECK DTC OF IPDM E/R

Check DTC of IPDM E/R.

Is any DTC detected?

YES

>> Perform trouble diagnosis for the detected DTC. Refer to 

PCS-37, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector and active grille shutter harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK ACTIVE GRILLE SHUTTER

1.

Check if any foreign objects interferes with active grille shutter.

2.

Check the installation condition of active grille shutter.

Is the inspection result normal?

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1503

AIR VENT CONTROL
(Air vent control)

• LIN communication error with active grille shutter
• Detects the malfunction of initial position learning 

or operational malfunctions for specified times. 

• Detects the temperature of active grille shutter ac-

tuator is more than 155

°

C (311

°

F) for more than 5 

seconds for accumulation.

• Detects the temperature of active grille shutter ac-

tuator is more than 155

°

C (311

°

F) for more than 

specified times.

• Harness or connectors
• Active grille shutter actuator

P1503 ACTIVE GRILLE SHUTTER

ECK-319

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK FUSE

Check #51 fuse is not fusing.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace the fuse after repairing the applicable circuit.

5.

CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect active grille shutter harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between active grille shutter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check the continuity between active grille shutter harness connector and IPDM E/R harness connector.

4.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Check IPDM E/R.

NO

>> Repair or replace error-detected parts.

7.

CHECK ACTIVE GRILLE SHUTTER GROUND CIRCUIT

Check the continuity between active grille shutter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK LIN COMMUNICATION CIRCUIT

1.

Disconnect harness connectors the following items.

-

ECM

-

Alternator

-

DC/DC converter

2.

Check the continuity between active grille shutter harness connector and ECM harness connector.

+

−

Voltage

Active grille shutter

Connector

Terminal

E115

1

Ground

Battery voltage

+

−

Continuity

Active grille shutter

IPDM E/R

Connector

Terminal

Connector

Terminal

E115

1

E37

8

Existed

+

−

Continuity

Active grille shutter

Connector

Terminal

E115

4

Ground

Existed

ECK-320

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P1503 ACTIVE GRILLE SHUTTER

3.

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

Is the inspection result normal?

YES

>> Replace active grille shutter.

NO

>> Repair or replace error-detected parts.

+

−

Continuity

Active grille shutter

ECM

Connector

Terminal

Connector

Terminal

E115

3

F81

141

Existed

 

 

 

 

 

 

 

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