User Manual - Page 1021

For 2001 XTERRA.

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Diagnostic Procedure
=NGEC0984
1 CHECK FUEL LEVEL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor until and fuel pump harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel level sensor unit and fuel pump terminal 1 and ground with CONSULT-II or tester.
SEF801Z
OK or NG
OK GO TO 3.
NG GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M67, B101
Harness for open or short between combination meter and fuel level sensor until and fuel pump
Repair or replace harness or connectors.
3 CHECK FUEL LEVEL SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between fuel level sensor unit and fuel pump terminal 4 and body ground. Refer to Wiring
Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK GO TO 4.
NG Repair open circuit or short to power in harness or connectors.
4 CHECK FUEL LEVEL SENSOR INPUT CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 46 and fuel level sensor unit and fuel pump terminal 1. Refer to Wir-
ing Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 6.
NG GO TO 5.
DTC P0464 FUEL LEVEL SENSOR CIRCUIT
VG33E
Diagnostic Procedure
EC-1021
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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