Nissan X-Trail 32. Manual - part 994

P1483 EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR

EC-1105

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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3.

CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT

Check the power supply of the exhaust electric throttle control actuator.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Perform trouble diagnosis for power supply circuit.

4.

CHECK EXHAUST ELECTRIC 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.

DTC CONFIRMATION PROCEDURES

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC-1096, "DTC Description"

.

Is the DTC P1483 displayed again?

YES

>> GO TO 6.

NO

>> INSPECTION END

6.

CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR

Perform 

EC-1106, "Component Inspection (Exhaust Throttle Position Sensor)"

, 

EC-1105, "Component Inspec-

tion (Exhaust Throttle Control Motor)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust electric throttle control actuator.

Component Inspection (Exhaust Throttle Control Motor)

INFOID:0000000010935797

1.

CHECK EXHAUST THROTTLE CONTROL MOTOR

1.

Disconnect exhaust electric throttle control actuator harness connector.

2.

Check the resistance between exhaust throttle control motor terminals as follows.

+

-

Voltage

Exhaust electric throttle control ac-

tuator

Connector

Terminal

F154

5

Ground

Battery voltage

+

+

Continuity

ECM

Exhaust electric throttle 

control actuator

Connector

Terminal

Connector

Terminal

F118

104

F154

1

Existed

113

3

117

2

132

5

147

6

EC-1106

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1483 EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust electric throttle control actuator.

Component Inspection (Exhaust Throttle Position Sensor)

INFOID:0000000010935798

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.

Exhaust throttle control actuator

Resistance

+

-

Terminal

5

6

2.65 - 3.25 

Ω

ECM

Voltage

+

-

Terminal

113

117

0.2 – 4.8 V

P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

EC-1107

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

DTC Description

INFOID:0000000010935799

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Low pressure EGR volume control valve clogged
• Low pressure EGR volume control valve stuck
• Low pressure EGR volume control valve

FAIL-SAFE

• EGR valve is closed position
• Throttle control motor is opened
• CSF regenerations forbidden
• CSF regeneration forbidden
• CCSL deactivation with dashboard message
• Freeshift inhibited

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 

EC-1107, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935800

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 

EC-1173, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace diesel particulate filter.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1484

LOW PRESSURE EGR VALVE
(Low pressure EGR valve)
• 1.DEF: MECHANICAL FAULT

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

ENGINE SPEED

3,500 rpm

EC-1108

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P1484 LOW PRESSURE EGR VOLUME CONTROL VALVE

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

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 

EC-1107, "DTC Description"

.

Is the DTC P1484 displayed again?

YES

>> GO TO 7.

NO

>> INSPECTION END

7.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

EC-1108, "Component Inspection (Low Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace error-detected parts. 

Component Inspection (Low Pressure EGR Volume Control Valve Motor)

INFOID:0000000010935801

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.

+

-

Continuity

ECM

Low pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F117

55

F155

1

Existed

65

2

69

3

F118

136

6

143

5

Low pressure EGR volume control valve

Condition

Resistance

+

-

Terminal

5

6

Temperature

°

 C (

°

F)

20 (68)

1.41 

Ω