Nissan Altima HL32 Hybrid. Manual - part 331

EC-308

< COMPONENT DIAGNOSIS >

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P0462, P0463 FUEL LEVEL SENSOR

P0462, P0463 FUEL LEVEL SENSOR

Description

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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 combina-

tion 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 variable resistor. Fuel level sensor output volt-

age changes depending on the movement of the fuel mechanical float.

DTC Logic

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DTC DETECTION LOGIC

NOTE:

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

UXXXX.

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

P0607. Refer to 

EC-320, "DTC Logic"

.

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

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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

ing 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 between 11V and 16V at

ignition switch ON.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 5 seconds.

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

YES

>> Go to 

EC-308, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

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1.

CHECK COMBINATION METER FUNCTION

Refer to 

MWI-43, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

MWI-35, "Diagnosis Description"

2.

CHECK INTERMITTENT INCIDENT

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0462

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

Fuel level sensor circuit 
high input

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

P0462, P0463 FUEL LEVEL SENSOR

EC-309

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Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

EC-310

< COMPONENT DIAGNOSIS >

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P0500 VSS

P0500 VSS

Description

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The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from hybrid

vehicle control ECU, and the other is from brake ECU. The ECM uses these signals for engine control.

DTC Logic

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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-320, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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

ing 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:

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

is conducted with the drive wheels lifted, activate “INPSECTION MODE 1” (

HBC-104

). If a road test is

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

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY).

2. Drive the vehicle at more than 40 km/h (25 MPH) for at least 2 minutes.

CAUTION:

Always drive vehicle at a safe speed.

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

YES

>> Go to 

EC-310, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

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1.

CHECK DTC WITH HYBRID VEHICLE CONTROL ECU

Refer to 

HBC-619, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace.

2.

CHECK BARAKE ECU

Refer to 

BRC-163, "DTC Index"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0500

Vehicle speed sensor

ECM detects a difference between two ve-
hicle speed signals is out of the specified 
range.

• Harness or connectors

(The CAN communication line is open or short-
ed)

• Hybrid vehicle control ECU
• Brake  ECU

P0500 VSS

EC-311

< COMPONENT DIAGNOSIS >

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>> INSPECTION END