Nissan Qashqai J11. Manual — part 527
EC9-264
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
DTC CONFIRMATION PROCEDURES
1.
Erase DTC.
2.
Perform DTC confirmation procedure again. Refer to
.
Is the DTC P0638 displayed again?
YES
>> GO TO 5.
NO
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
5.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR
Perform
EC9-206, "Component Inspection (Throttle Position Sensor)"
(throttle control motor).
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> GO TO 6.
6.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace electric throttle control actuator.
2.
.
>> INSPECTION END
+
-
Continuity
ECM
Electric throttle control actu-
ator
Connector
Terminal
Connector
Terminal
F83
103
F116
2
Existed
107
3
108
1
140
5
152
4
P0641 SENSOR POWER SUPPLY
EC9-265
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
P0641 SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000010309226
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
EC9-265, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010309227
1.
CHECK SENSOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> GO TO 2.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0641
SEN SUPPLY N-1 VOL
(Sensor reference voltage
“A” circuit/open)
• 1.DEF: VOLTAGE TOO
LOW
• 2.DEF: VOLTAGE TOO
HIGH
• A voltage of sensor power supply is 5.3 V or more.
• A voltage of sensor power supply is 4.7 V or less.
• Harness or connectors
(The sensor power supply 1 circuit
is shorted.)
• High pressure EGR volume con-
trol valve position sensor
• Throttle valve position sensor
• Intake manifold runner control
valve position sensor
• DPF differential pressure sensor
• TC boost sensor
• Low pressure EGR volume control
valve position sensor
• Camshaft position sensor
• APP sensor 1
+
−
Voltage
(Approx.)
ECM
Connectors
Terminal
E58
27
Ground
5 V
F82
55
59
F83
100
108
112
EC9-266
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0641 SENSOR POWER SUPPLY
2.
CHECK SENSOR POWER SUPPLY CIRCUITS
1.
Turn ignition switch OFF.
2.
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair short to ground or short to power in harness or connectors.
3.
CHECK COMPONENTS
Check the following.
• Accelerator pedal position sensor (sensor 1). Proceed to
EC9-365, "Diagnosis Procedure"
• Low pressure EGR volume control valve position sensor. Proceed to
EC9-298, "Component Inspection (Low
Pressure EGR Volume Control Valve Motor)"
• Camshaft position sensor. Proceed to
EC9-230, "Component Inspection (Camshaft Position Sensor)"
.
• Turbocharger boost sensor. Proceed to
EC9-198, "Component Inspection (Turbocharger Boost Sensor)"
.
• DPF pressure sensor. Proceed to
EC9-376, "Diagnosis Procedure"
.
• High pressure EGR volume control valve position sensor. Proceed to
EC9-238, "Diagnosis Procedure"
.
• Throttle valve position sensor. Proceed to
EC9-206, "Component Inspection (Throttle Position Sensor)"
• Intake manifold runner control valve position sensor. Proceed to
EC9-282, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Replace malfunctioning component.
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
E58
27
Accelerator pedal position sensor (sensor 1)
E20
4
F82
55
Low pressure EGR volume control valve position sensor
F77
1
Camshaft position sensor
F118
1
59
Turbocharger boost sensor
F121
3
F83
100
DPF differential pressure sensor
F120
1
108
High pressure EGR volume position sensor
F14
4
Throttle valve position sensor
F116
1
112
Intake manifold runner control valve position sensor
F107
1
P0651 SENSOR POWER SUPPLY
EC9-267
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
P0651 SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000010309231
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
EC9-267, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010309232
1.
CHECK SENSOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
CHECK SENSOR POWER SUPPLY CIRCUITS
1.
Turn ignition switch OFF.
2.
Check harness for short to power and short to ground, between the following terminals.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0651
SEN SUPPLY N-2 VOL
(Sensor reference voltage
“B” circuit/open)
• 1.DEF: VOLTAGE TOO
LOW
• 2.DEF: VOLTAGE TOO
HIGH
• A voltage of sensor power supply is 5.3 V or
more.
• A voltage of sensor power supply is 4.7 V or
less.
• Harness or connectors
(The sensor power supply 2 circuit is
shorted.)
• Refrigerant pressure sensor
• Exhaust electric throttle control actu-
ator
• DPF differential pressure sensor
• Exhaust gas pressure sensor
• Accelerator pedal position sensor 2
+
−
Voltage
(Approx.)
ECM
Connectors
Terminal
E58
23
Ground
5.0 V
F82
99
F83
100
104
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