2001 INFINITI QX4 Factory Service Manual

Page 945 of 2395

INFINITI QX4 2001  Factory Service Manual 5 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M2, B1
IHarness connectors M94, F27
IHarness for open or short between ECM and fuel level sensor
©Repair open circuit or short to

Page 946 of 2395

INFINITI QX4 2001  Factory Service Manual SEF018S
Component Description=NBEC0622The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal
to the ECM.
It consists of

Page 947 of 2395

INFINITI QX4 2001  Factory Service Manual 5) Turn ignition switch ªOFFº and wait at least 10 seconds then
turn ªONº.
6) Select ªFUEL LEVEL SEº in ªDATA MONITORº mode with
CONSULT-II.
7) Check ªFUEL LEVEL SEº output voltage and note

Page 948 of 2395

INFINITI QX4 2001  Factory Service Manual SEF018S
Component DescriptionNBEC0626The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal
to the ECM.
It consists of

Page 949 of 2395

INFINITI QX4 2001  Factory Service Manual Wiring DiagramNBEC0630
MEC984C
DTC P0464 FUEL LEVEL SENSOR CIRCUIT
Wiring Diagram
EC-414

Page 950 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic Procedure=NBEC0631
1 CHECK FUEL LEVEL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect fuel level sensor unit harness connector.
3. Turn ignition switch ªONº.
4.

Page 951 of 2395

INFINITI QX4 2001  Factory Service Manual 5 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M2, B1
IHarness connectors M94, F27
IHarness for open between ECM and fuel level sensor
©Repair open circuit or short to power in

Page 952 of 2395

INFINITI QX4 2001  Factory Service Manual AEC110
Component Description=NBEC0242The vehicle speed sensor is installed in the transaxle. It contains a
pulse generator which provides a vehicle speed signal to the
speedometer. The speedometer the