2007 INFINITI FX35 Service Manual

engine fuel reserve remote control brake headlight aiming horn

Page 1577 of 4366

INFINITI FX35 2007 Service Manual DTC P0102, P0103 MAF SENSOR EC-201
[VQ35DE]
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EC
Revision: 2006 July 2007 FX35/FX45
6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OF

Page 1578 of 4366

INFINITI FX35 2007 Service Manual EC-202
[VQ35DE]
DTC P0102, P0103 MAF SENSOR
Revision: 2006 July 2007 FX35/FX45
Component InspectionNBS003NI
MASS AIR FLOW SENSOR
With CONSULT-II
1. Reconnect all harness connectors disconnected.
2.

EC-202
[VQ35DE]
DTC P0102, P0103 MAF SENSOR
Revision: 2006 July 2007 FX35/FX45
Component InspectionNBS003NI
MASS AIR FLOW SENSOR
With CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Connect CONSULT-II and select “DATA MONITOR” mode.
4. Select “MAS A/F SE-B1” and check indication under the follow- ing conditions.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
5. If the voltage is out of specification, proceed the following.
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system parts
b. If NG, repair or replace malfunctioning part and perform step 2 to 4 again. If OK, go to next step.
6. Turn ignition switch OFF.
7. Disconnect mass air flow sensor harness connector and reconnect it again.
8. Perform step 2 to 4 again.
9. If NG, clean or replace mass air flow sensor.
Without CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 51 (Mass air flow sensor signal) and ground.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
4. If the voltage is out of specification, proceed the following.
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system parts
Condition MAS A/F SE-B1 (V)
Ignition switch ON (Engine stopped.) Approx. 0.4
Idle (Engine is warmed-up to normal
operating temperature.) 1.0 - 1.2
2,500 rpm (Engine is warmed-up to
normal operating temperature.) 1.6 - 2.0
Idle to about 4,000 rpm 1.0 - 1.2 to Approx. 2.4*
PBIB2371E
Condition Voltage V
Ignition switch ON (Engine stopped.) Approx. 0.4
Idle (Engine is warmed-up to normal
operating temperature.) 1.0 - 1.2
2,500 rpm (Engine is warmed-up to
normal operating temperature.) 1.6 - 2.0
Idle to about 4,000 rpm 1.0 - 1.2 to Approx. 2.4*
PBIB1106E

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INFINITI FX35 2007 Service Manual DTC P0102, P0103 MAF SENSOR EC-203
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
b. If NG, repair or replace malfunctioning part and perform step 2 and 3 again.

Page 1580 of 4366

INFINITI FX35 2007 Service Manual EC-204
[VQ35DE]
DTC P0112, P0113 IAT SENSOR
Revision: 2006 July 2007 FX35/FX45
DTC P0112, P0113 IAT SENSORPFP:22630
Component DescriptionNBS003NK
The intake air temperature (IAT) sensor is built-into

Page 1581 of 4366

INFINITI FX35 2007 Service Manual DTC P0112, P0113 IAT SENSOR EC-205
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
WITH GST
Follow the procedure “WITH CONSULT-II” above.

Page 1582 of 4366

INFINITI FX35 2007 Service Manual EC-206
[VQ35DE]
DTC P0112, P0113 IAT SENSOR
Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS003NN
TBWM0288E

Page 1583 of 4366

INFINITI FX35 2007 Service Manual DTC P0112, P0113 IAT SENSOR EC-207
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS003NO
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch

Page 1584 of 4366

INFINITI FX35 2007 Service Manual EC-208
[VQ35DE]
DTC P0112, P0113 IAT SENSOR
Revision: 2006 July 2007 FX35/FX45
4. CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-208, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repl

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