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Hino P0500 Fault Code: Vehicle Speed Sensor – Low

26/01/2025

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TECHNICAL DESCRIPTION

The engine ECU consistently measures pulses from the vehicle speed sensor through combination meter.

DESCRIPTION OF MALFUNCTION

Pulses from the vehicle speed sensor cannot be sensed.

DTC SET CONDITION

DTC Detection Condition:

Starter switch ON.

The conditions described below remain for 5 seconds or longer.

− Engine speed is 1,200 r/min or more. − Gear is engaged.

− The fuel injection quantity is 60 mm3 /st. cyl or more.

− Engine coolant temperature is 50ºC {122ºF} or higher.

− Battery voltage is in the range of 10 V to 16 V.

− The monitor disable DTC table can be referred to.

Judgment Criteria:

Output of the vehicle speed sensor remains at a vehicle speed of 0 km/h {0 mph} for 5 seconds or longer.

RESET CONDITION

After restoration to normal condition.

INDICATION, WARNING OR SYSTEM CONTROL REGULATION WHEN THE DTC IS SET

− MIL: ON

− SVS light: OFF

PRE-INSPECTION WORK

Check that the battery voltage is in the normal range.

AFTER-INSPECTION WORK

− Clear all past DTCs.

− Check that no DTC is stored after test drive.

POSSIBLE CAUSES

− Vehicle speed sensor failure.

− Malfunction of pulse modulator (in combination meter).

− Harness disconnection or short-circuit.

− Irregular contact (disconnection or poor fit of connector).

INSPECTION PROCEDURE

TROUBLESHOOTING STEPS

Step 1) Inspect the combination meter.

Drive the vehicle and confirm that the combination meter (speedometer) is working properly.

Were any failures found?

Yes – Check the combination meter (vehicle speed signal system). Clear all past DTCs. Check that no DTC is detected after test drive.

No – Go to Step 2.

Step 2) Check the DTC detected (vehicle control ECU).

Set the starter switch to the “LOCK” position.
Connect the vehicle to the diagnostic tool.
Set the starter switch to the “ON” position.
Select [VCS] and check if the DTC P0500 or P0501 has been detected.

Has DTC P0500 or P0501 been detected?

Yes – Go to Step 3.

No – Go to Step 5.

Step 3) Inspect for short-circuits in wire harness of vehicle speed signal circuit.

Set the starter switch to the “LOCK” position.
Disconnect the combination meter connector.
Connect the signal check harness to the engine ECU vehicle-side harness. (Do not connect the harness to the ECU).
Use the electrical tester to measure the resistance between the engine ECU (signal check harness) and ground.

MEASUREMENT CONDITIONS

TESTER CONNECTIONS

STANDARD VALUES

Starter switch: LOCK

Engine ECU (signal check harness) – Ground

V14(VS) – Ground

∞ Ω

Do the measurements meet the standard value?

Yes – Go to Step 4.

No – Repair or replace the harness. Clear all past DTCs. Check that no DTC is detected after test drive.

Step 4) Inspect for disconnection in wire harness of vehicle speed signal circuit.

Set the starter switch to the “LOCK” position.
Disconnect the combination meter connector.
Connect the signal check harness to the engine ECU vehicle-side harness. (Do not connect the harness to the ECU).
Use the electrical tester to measure the resistance between the combination meter vehicle-side connector terminal and engine ECU (signal check harness) terminal.

MEASUREMENT CONDITIONS	TESTER CONNECTIONS	STANDARD VALUES
Starter switch: LOCK	Combination meter vehicle-side connector – engine ECU (signal check harness) PC04 – V14(VS)	Less than 1 Ω