Nissan Qashqai J11. Manual — part 354
SENSOR POWER SUPPLY 2 CIRCUIT
ECM-393
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK COMPONENTS
Check the following.
• Refrigerant pressure sensor (Refer to
ECM-394, "Diagnosis Procedure"
)
• Fuel rail pressure sensor (Refer to
ECM-242, "Component Inspection"
• Engine oil pressure sensor (Refer to
ECM-290, "Component Inspection"
• Barometric pressure sensor (Refer to
ECM-187, "Component Inspection"
• CMP sensor (Refer to
ECM-266, "Component Inspection"
)
• Exhaust valve timing control position sensor (Refer to
ECM-315, "Component Inspection"
)
Is the inspection result normal?
YES
>> Proceed to
GI-41, "Intermittent Incident"
NO
>> Replace malfunctioning part.
+
−
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
E57
101
Barometric pressure sensor
F144
1
118
APP sensor 2
E20
5
F15
23
Refrigerant pressure sensor
E41
3
Engine oil pressure sensor
F117
3
Fuel rail pressure sensor
F95
1
43
CMP sensor
F37
1
ECM-394
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
Component Function Check
INFOID:0000000010703079
1.
CHECK REFRIGERANT PRESSURE SENSOR FUNCTION
1.
Start engine and warm it up to normal operating temperature.
2.
Turn A/C switch and blower fan switch ON.
3.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
ECM-394, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010703080
1.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect refrigerant pressure sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Disconnect ECM harness connector.
3.
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for power supply circuit.
NO
>> Repair or replace malfunctioning part.
3.
CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT
1.
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
ECM
Voltage
Connector
+
–
Terminal
F15
34
39
1.0 - 4.0 V
+
−
Voltage
(Approx.)
Refrigerant pressure sensor
Connector
Terminal
E41
3
Ground
5 V
+
−
Continuity
Refrigerant pressure sensor
ECM
Connector
Terminal
Connector
Terminal
E41
3
F15
23
Existed
REFRIGERANT PRESSURE SENSOR
ECM-395
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
2.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT
1.
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
2.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace refrigerant pressure sensor. Refer to
HA-36, "REFRIGERANT PRESSURE SENSOR :
.
NO
>> Repair or replace malfunctioning part.
+
−
Continuity
Refrigerant pressure sensor
ECM
Connector
Terminal
Connector
Terminal
E41
1
F15
39
Existed
+
−
Continuity
Refrigerant pressure sensor
ECM
Connector
Terminal
Connector
Terminal
E41
2
F15
34
Existed
ECM-396
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
COOLING FAN
COOLING FAN
Component Function Check
INFOID:0000000010703081
1.
CHECK COOLING FAN FUNCTION
With CONSULT
1.
Turn ignition switch ON.
2.
Perform “COOLING FAN (DUAL)” in “ACTIVE TEST” mode of “IPDM E/R” using CONSULT.
3.
Touch “LOW”, “HI” on the CONSULT screen.
4.
Check that cooling fan operates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
ECM-396, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010703082
1.
CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT-1
1.
Turn ignition switch OFF.
2.
Disconnect cooling fan relay-2.
3.
Check the voltage between cooling fan relay-2 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble diagnosis for power supply circuit.
2.
CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT-2
Check the voltage between cooling fan relay-2 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Perform trouble diagnosis for power supply circuit.
3.
CHECK COOLING FAN RELAY OUTPUT SIGNAL CIRCUIT
1.
Disconnect IPDM E/R harness connector.
2.
Check the continuity between cooling fan relay-2 harness connector and IPDM E/R harness connector.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
+
−
Voltage
Cooling fan relay-2
Connector
Terminal
F69
3
Ground
Battery voltage
+
−
Voltage
Cooling fan relay-2
Connector
Terminal
F69
1
Ground
Battery voltage
+
−
Continuity
Cooling fan relay-2
IPDM E/R
Connector
Terminal
Connector
Terminal
F69
4
F89
90
Existed
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