2007 INFINITI M35 Factory Service Manual

rims winter tyres manual radio set change time torque horn

Load previous 8 pages

Page 2569 of 4647

INFINITI M35 2007 Factory Service Manual EC-1040
[VK45DE]
DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION
Revision: 2007 April2007 M35/M45
3. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect

Page 2570 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION
EC-1041
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
4. CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-790, "

Page 2571 of 4647

INFINITI M35 2007 Factory Service Manual EC-1042
[VK45DE]
DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION
Revision: 2007 April2007 M35/M45
OK or NG
OK >> GO TO 9.
NG >> Perform trouble diagnosis for EC-1389, "
FUEL INJECTOR" .
8. CHECK FUNCT

Page 2572 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0181 FTT SENSOR
EC-1043
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS005FH
The fuel tank temperature sensor (3) is use

DTC P0181 FTT SENSOR
EC-1043
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS005FH
The fuel tank temperature sensor (3) is used to detect the fuel tem-
perature inside the fuel tank. The sensor modifies a voltage signal
from the ECM. The modified signal returns to the ECM as the fuel
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
Fuel level sensor unit and fuel pump (1)
Fuel pressure regulator (2)

*: This data is reference value and is measured between ECM terminal 107 (Fuel
tank temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result in damage to the ECM's transistor.
Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicNBS005FI
DTC Confirmation ProcedureNBS005FJ
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 10 seconds.
If the result is NG, go to EC-1046, "
Diagnostic Procedure" .
If the result is OK, go to following step.
4. Check “COOLAN TEMP/S” value.
If “COOLAN TEMP/S” is less than 60°C (140°F), the result will
be OK.
If “COOLAN TEMP/S” is above 60°C (140°F), go to the following
step.
5. Cool engine down until “COOLAN TEMP/S” is less than 60°C
(140°F).
6. Wait at least 10 seconds.
7. If 1st trip DTC is detected, go to EC-1046, "
Diagnostic Procedure" .
PBIB2707E
Fluid temperature
°C (°F)Voltage*
VResistance
kΩ
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
SEF012P
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0181
0181Fuel tank temperature
sensor circuit range/
performanceRationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage signals
from engine coolant temperature sensor and
intake air temperature sensor.
Harness or connectors
(The sensor circuit is open or shorted)
Fuel tank temperature sensor
SEF174Y

Page 2573 of 4647

INFINITI M35 2007 Factory Service Manual EC-1044
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2007 April2007 M35/M45
WITH GST
Follow the procedure “WITH CONSULT-II” above.

Page 2574 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0181 FTT SENSOR
EC-1045
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005FK
TBWT1538E

Page 2575 of 4647

INFINITI M35 2007 Factory Service Manual EC-1046
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2007 April2007 M35/M45
Diagnostic ProcedureNBS005FL
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on th

Page 2576 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0181 FTT SENSOR
EC-1047
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M66, B418
Harness for open or s

Load next 8 pages

Page: < prev 1-10 ... 2537-2544 2545-2552 2553-2560 2561-2568 2569-2576 2577-2584 2585-2592 2593-2600 2601-2608 ... 4648 next >

flat tire timing belt bolt pattern engine overheat AUX catalytic converter