Nissan X-Trail 32. Manual — part 977
P0380 GLOW CONTROL SYSTEM
EC-1037
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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2.
CHECK GLOW CONTROL UNIT POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check the power supply of the glow control unit.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Perform trouble diagnosis for power supply circuit.
3.
CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-1
1.
Turn ignition switch OFF.
2.
Check the continuity between glow control unit harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-2
Check the continuity between glow control unit harness connector and glow plug harness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK GLOW PLUG
EC-1038, "Component Inspection (Glow Plug)"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace error-detected parts.
6.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace glow control unit.
NO
>> Repair or replace.
+
-
Voltage
Glow control unit
Connector
Terminal
F140
6
Ground
Battery voltage
10
+
-
Continuity
ECM
Glow control unit
Connector
Terminal
Connector
Terminal
F117
35
F140
11
Existed
67
9
+
-
Continuity
Glow control unit
Glow plug
Connector
Terminal
Connector
Terminal
F140
1
F95
1
Existed
2
F96
1
3
F97
1
4
F98
1
EC-1038
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0380 GLOW CONTROL SYSTEM
Component Inspection (Glow Plug)
INFOID:0000000010935716
1.
CHECK GLOW PLUG
1.
Disconnect glow plug harness connector.
2.
Check resistance between glow plug terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning glow plug.
+
-
Resistance
Glow plug
Terminal
1
Ground
0.2 - 0.8
Ω
[at 20
°
C (68
°
F)]
P0402 EGR VOLUME CONTROL VALVE
EC-1039
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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P0402 EGR VOLUME CONTROL VALVE
DTC Description
INFOID:0000000010935717
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors
• High Pressure EGR volume control valve
FAIL-SAFE
• EGR valve is closed position
• Throttle control motor is opened
• CSF regenerations 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-1039, "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:0000000010935718
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
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0402
EGR VALVE JAMMED OPEN
(Exhaust gas recirculation “A” flow exces-
sive detected)
• 1.DEF: MECHANICAL FAULT
ECM detects an incorrect closed position of high Pressure EGR volume
control valve.
ENGINE SPEED
3,500 rpm
EC-1040
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0402 EGR VOLUME CONTROL VALVE
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.
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
.
Is the DTC P0402 displayed again?
YES
>> GO TO 6.
NO
>> INSPECTION END
6.
CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR
EC-1040, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace error-detected parts.
Component Inspection (High Pressure EGR Volume Control Valve Motor)
INFOID:0000000010935719
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
F118
144
F156
1
Existed
148
2
High pressure EGR volume
control valve
Resistance (Approx.)
+
-
Terminal
1
2
2.35
Ω
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