Hino P0219 Fault Code: Engine Overspeed Condition

Technical Description

The engine ECU detects the engine speed using the engine speed main sensor (crankshaft position sensor) mounted on the flywheel housing.

Description Of Malfunction

Engine speed above rated value is detected.

DTC Set Condition

DTC Detection Condition:

While the engine is in operation.

Judgment Criteria:

An engine speed of more than 3,000 r/min.

Reset Condition

After restoration to normal condition.

Indication, Warning Or System Control Regulation When The DTC Is Set

− MIL: OFF

− SVS light: OFF

− Cruise control function is not available.

Symptoms On The Vehicle When The Dtc Is Set

Symptoms on the Vehicle Due to Backup Control (Fail Safe Function):

Cruise control does not work.

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

− Miss-shift (MT vehicle).

− Operated with excessive engine oil running around to the air intake system.

− Irregular contact of connector and harness.

− Malfunction of engine speed main sensor (crankshaft position sensor).

Inspection Procedure

Troubleshooting Steps

Step 1) Inspect the engine oil level.

Check the oil level gauge and make sure the engine oil quantity is within the standard value.

Is the engine oil quantity within the standard value?

Step 2) Inspect the engine speed main sensor connector.

Check the connection of the engine speed main sensor connector (Looseness and poor contact).

Were any failures found?

Step 3) Check the engine speed main sensor.

1. Check the installation of the engine speed main sensor.
2. Make sure there is no dirt or damage to the engine speed main sensor.

Were any failures found?

Step 4) Inspect the engine speed main sensor power supply.

1. Set the starter switch to the “LOCK” position.
2. Disconnect the engine speed main sensor connector.
3. Set the starter switch to the “ON” position.
4. Use the electrical tester to measure the voltage between the terminals of the engine speed main sensor vehicle-side connector.

Do the measurements meet the standard value?

Step 5) Check for disconnection in wire harness of engine speed main sensor.

1. Set the starter switch to the “LOCK” position.
2. Connect the signal check harness to the engine ECU vehicle-side harness. (Do not connect the harness to the ECU).
3. Use the electrical tester to measure the resistance between the engine ECU (signal check harness) and each terminal in the engine speed main sensor vehicle-side connector

Do the measurements meet the standard value?

Step 6) Check for short-circuit in wire harness of engine speed main sensor.

Use the electrical tester to measure the resistance between each terminal in the engine ECU (signal check harness) and ground.

Do the measurements meet the standard value?

Step 7) Check the engine speed main sensor signal.

1. Connect the signal check harness to the engine ECU.
2. Connect the engine speed main sensor connector.
3. Start the engine.
4. Use the oscilloscope to measure the voltage between the terminals of the engine ECU (signal check harness).

Do the measurements meet the standard value?

Step 8) Check the DTC detected (Engine ECU) [Diagnostic Tool].

1. Warm-up the engine. (Engine coolant temperature: 60°C {140°F} or more).
2. Stop the engine and the starter switch to the “LOCK” position.
3. Connect the vehicle to the diagnostic tool.
4. Set the starter switch to the “ON” position.
5. Select [Engine] and check if P0219 has been detected

Has DTC P0219 been detected?

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