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Nissan Titan. Manual - part 261

P0462, P0463 FUEL LEVEL SENSOR

EC-345

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0462, P0463 FUEL LEVEL SENSOR

Component Description

INFOID:0000000009886754

The 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 combination meter. The combination meter sends the fuel level

sensor signal to the ECM through CAN communication line.

It consists of two parts, one is mechanical float and the other is vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000009886755

NOTE:

• If DTC P0462 or P0463 is displayed with DTC U0101 or U1001, first perform the trouble diagnosis for

DTC U0101, U1001. Refer to

EC-155

• If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC

P0607. Refer to

EC-362

This diagnosis indicates the former, to detect open or short circuit malfunction.

DTC Confirmation Procedure

INFOID:0000000009886756

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.
1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich OFF and wait at least 10 seconds.
TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V at ignition

switch ON.

1. Turn ignition switch ON.

2. Wait at least 5 seconds.

3. Check 1st trip DTC.

4. If 1st trip DTC is detected, go to

EC-345, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009886757

CHECK COMBINATION METER FUNCTION

Refer to

MWI-28, "CONSULT Function (METER/M&A)"

OK or NG

>> GO TO 2.

>> Go to

MWI-37, "Diagnosis Procedure"

CHECK INTERMITTENT INCIDENT

BBIA0402E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0462
0462

Fuel level sensor circuit
low input

An excessively low voltage from the sensor is
sent to ECM.

• Harness or connectors

(The CAN communication line is open or
shorted)

• Harness or connectors

(The sensor circuit is open or shorted)

• Combination meter
• Fuel level sensor

P0463
0463

Fuel level sensor circuit
high input

An excessively high voltage from the sensor is
sent to ECM.

EC-346

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0462, P0463 FUEL LEVEL SENSOR

Refer to

GI-39, "How to Check Terminal"

and

GI-42, "Intermittent Incident"

>> INSPECTION END

P0500 VSS

EC-347

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0500 VSS

Description

INFOID:0000000009886758

ECM receives vehicle speed signals from two different paths via CAN communication line: One is from the

ABS actuator and electric unit (control unit) via the combination unit and the other is from TCM.

DTC Logic

INFOID:0000000009886759

DTC DETECTION LOGIC

NOTE:

• If DTC P0500 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

• If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to

EC-

362, "DTC Logic"

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure before conducting 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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine.

2. Shift the selector lever to D range and wait at least for 2 seconds.

3. Drive the vehicle at least 5 seconds at 20 km/h (13 MPH) or more.

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a

road test is expected to be easier, it is unnecessary to lift the vehicle.

4. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to

EC-347, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009886760

CHECK DTC WITH TCM

Check DTC with TCM. Refer to

TM-38, "CONSULT Function (TRANSMISSION)"

Is the inspection result normal?

YES

>> GO TO 2.

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0500

VEH SPEED SEN/CIRC
(Vehicle speed sensor)

At 20 km/h (13 MPH), ECM detects the fol-
lowing status continuously for 5 seconds or
more: The difference between a vehicle
speed calculated by a output speed sensor
transmitted from TCM to ECM via CAN com-
munication and the vehicle speed indicated
on the combination meter exceeds 15km/h
(10 MPH).

• Harness or connector

(The CAN communication line is open
or shorted.)

• Combination meter
• ABS actuator and electric unit (control

unit)

• Wheel sensor
• TCM
• Output speed sensor