Nissan Qashqai J11. Manual — part 509
EC9-192
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0095 IAT SENSOR 2
P0095 IAT SENSOR 2
DTC Logic
INFOID:0000000010309100
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC P0095 can not duplicate.
>> Proceed to
EC9-192, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010309101
1.
CHECK ECM HARNESS CONNECTOR CONNECTION
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK INTAKE AIR TEMPERATURE SENSOR 2 HARNESS CONNECTOR CONNECTION
1.
Turn ignition switch OFF.
2.
Check turbocharger boost sensor (with intake air temperature sensor 2) harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK INTAKE AIR TEMPERATURE SENSOR 2
EC9-193, "Component Inspection (Intake Air Temperature Sensor 2)"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace error-detected parts.
4.
CHECK INTAKE AIR TEMPERATURE SENSOR 2 CIRCUIT FOR OPEN AND SHORT
Check intake air temperature sensor 2 circuit for open and short.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0095
AIR TEMP SEN/CIRC
(Intake air temperature sen-
sor 2 circuit bank 1)
• 1.DEF: VOLTAGE TOO
LOW
• 2.DEF: VOLTAGE TOO
HIGH
• 3.DEF: IMPLAUSIBLE
SIGNAL
• Signal voltage from the intake air
temperature sensor 2 remains 4.9 V
or more for 1 second or more.
• An excessively low voltage from the
intake air temperature sensor 2 is
sent to ECM.
• ECM receives an abnormal signal.
• Harness or connectors
(Intake air temperature sensor 2 circuit is
open or shorted.
• Intake air temperature sensor 2
P0095 IAT SENSOR 2
EC9-193
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM TEMPERATURE SENSOR
EC9-193, "Component Inspection (Low Pressure EGR Volume Control Valve Upstream Temperature
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Replace error-detected parts.
Component Inspection (Intake Air Temperature Sensor 2)
INFOID:0000000010309102
1.
CHECK INTAKE AIR TEMPERATURE SENSOR 2
1.
Disconnect turbocharger boost sensor (with intake air temperature sensor 2) harness connector.
2.
Check resistance between turbocharger boost sensor (with intake air temperature sensor 2) harness con-
nector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace turbocharger boost sensor (with intake air temperature sensor 2).
Component Inspection (Low Pressure EGR Volume Control Valve Upstream Temper-
ature Sensor)
INFOID:0000000010309103
1.
CHECK LOW PRESSURE EGR TEMPERATURE SENSOR
1.
Disconnect low pressure EGR temperature sensor harness connector.
2.
Check resistance between low pressure EGR temperature sensor terminals under the following condi-
tions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace low pressure EGR temperature sensor.
+
-
Continuity
ECM
Turbocharger boost sensor
(with Intake air temperature
sensor 2)
Connector
Terminal
Connector
Terminal
F82
59
F121
3
Existed
81
1
86
2
Turbocharger boost sensor
(with intake air temperature sensor 2)
Condition
Resistance
+
-
Terminals
2
1
Temperature
°
C (
°
F)
20 (68)
2.499 – 2.583 k
Ω
Low pressure EGR temperature sen-
sor
Condition
Resistance
+
-
Terminal
1
2
Temperature
°
C (
°
F)
20 (68)
57.094 – 65.836 k
Ω
EC9-194
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0100 MAF SENSOR
P0100 MAF SENSOR
DTC Logic
INFOID:0000000010309104
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 2 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC9-194, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010309105
1.
CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT
Check the power supply of the mass air flow sensor.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble diagnosis for power supply circuit.
2.
CHECK MASS AIR FLOW SENSOR CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Check mass air flow sensor circuit for open and short.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0100
AIR FLOW SENSOR CIRCUIT
(Mass or volume air flow “A” cir-
cuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH
• An excessively low voltage from the sensor
is sent to ECM for 2 seconds or more.
• An excessively high voltage from the sensor
is sent to ECM for 2 seconds or more.
• Harness or connectors
(Mass air flow sensor circuit is open or
shorted.)
• Mass air flow sensor
+
-
Voltage
Mass air flow sensor
Connector
Terminal
F91
3
Ground
5.0 V
+
-
Continuity
ECM
Mass air flow sensor
Connector
Terminal
Connector
Terminal
F82
78
F91
4
Existed
82
2
P0100 MAF SENSOR
EC9-195
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
3.
CHECK MASS AIR FLOW SENSOR
EC9-195, "Component Inspection (Mass Air Flow Sensor)"
Is the inspection result normal?
YES
>> Replace error-detected parts.
NO
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Component Inspection (Mass Air Flow Sensor)
INFOID:0000000010309106
1.
CHECK MASS AIR FLOW SENSOR
1.
Disconnect mass air flow sensor harness connector.
2.
Check resistance between mass air flow sensor terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mass air flow sensor.
Mass air flow sensor
Resistance
+
-
Terminal
3
4
2 – 10 k
Ω
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