Nissan Murano. Instruction — part 517
EC-178
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0111 IAT SENSOR
5.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Component Function Check
INFOID:0000000009719913
1.
CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect mass air flow sensor (bank 1) harness connector.
3.
Check resistance between mass air flow sensor (bank 1) terminals as follows.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Proceed to
.
2.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000009719914
1.
CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR
Check intake air temperature sensor. Refer to
EC-178, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace mass air flow sensor (with intake air temperature sensor) (bank 1). Refer to
.
2.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000009719915
1.
CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect mass air flow sensor (bank 1) harness connector.
3.
Check resistance between mass air flow sensor (bank 1) terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mass air flow sensor (with intake air temperature sensor) (bank 1). Refer to
.
Terminals
Condition
Resistance (k
Ω
)
1 and 2
Temperature [
°
C (
°
F)]
25 (77)
1.800 – 2.200
Terminals
Condition
Resistance (k
Ω
)
1 and 2
Temperature [
°
C (
°
F)]
25 (77)
1.800 – 2.200
P0112, P0113 IAT SENSOR
EC-179
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0112, P0113 IAT SENSOR
Description
INFOID:0000000009719916
The intake air temperature sensor is built-into the mass air flow sen-
sor (1). The sensor detects intake air temperature and transmits a
signal to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the rise in temperature.
<Reference data>
*: These data are reference values and are measured between ECM terminals 50
(Intake air temperature sensor) and 56 (Sensor ground).
DTC Logic
INFOID:0000000009719917
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 5 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
PBIA9559J
Intake air temperature
[
°
C (
°
F)]
Voltage* (V)
Resistance (k
Ω
)
25 (77)
3.3
1.800 - 2.200
80 (176)
1.2
0.283 - 0.359
SEF012P
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0112
Intake air tempera-
ture sensor circuit
low input
An excessively low voltage from the sensor is
sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Intake air temperature sensor
P0113
Intake air tempera-
ture sensor circuit
high input
An excessively high voltage from the sensor is
sent to ECM.
EC-180
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0112, P0113 IAT SENSOR
Diagnosis Procedure
INFOID:0000000009719918
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between mass air flow sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between mass air flow sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK INTAKE AIR TEMPERATURE SENSOR
EC-180, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace mass air flow sensor (with intake air temperature sensor). Refer to
5.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009719919
1.
CHECK INTAKE AIR TEMPERATURE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect mass air flow sensor harness connector.
3.
Check resistance between mass air flow sensor terminals as per the following.
MAF sensor
Ground
Voltage
Connector
Terminal
F4
2
Ground
Approx. 5 V
MAF sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F4
1
F8
56
Existed
P0112, P0113 IAT SENSOR
EC-181
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mass air flow sensor (with intake air temperature sensor). Refer to
.
Terminal
Condition
Resistance (k
Ω
)
1 and 2
Temperature [
°
C (
°
F)]
25 (77)
1.800 - 2.200
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