HINO Truck 600 Series P0006 Fuel Cutoff Valve GND Short-circuit Trouble

This instruction show you guide on how to repair HINO truck 600 series P0006 fuel cutoff valve GND short-circuit trouble.

 

Preparations:

Nexiq USB2 Diagnostic Adapter

2024.03 HINO Diagnostic Explorer DX3/DX2 Diagnostic Software Free Download

HINO Trucks EPC Electronic Parts Catalog 2018 2016 Free Download

 

 

Procedures:

1.Inspect the fuel cut valve connector

Check the connection of the fuel cut valve connector (looseness and poor contact).

If you find any failure,connect securely,repair if need.Perform “After inspection work” of information section

Otherwise go to step 2

 

2.Inspect the fuel cut valve

Check the installation of the fuel cut valve.

If you find any failure,install the fuel cut valve correctly.Replace the fuel cut valve if it is damaged.

Perform “After inspection work” of information section.

Otherwise go to step 3

 

3.Inspect the fuel cut valve unit

Set the starter switch to the “LOCK” position.

Disconnect the fuel cut valve connector.

Use the electrical tester to measure the resistance between the terminals of the fuel cut valve FCV and ground.

If the measured value is standard (20°C 8.0-9.2 Ω)

Otherwise replace the fuel cut valve

Perform “After inspection work” of information section

 

4.Inspect for short-circuit of the fuel cut valve harness

Connect the signal check harness to the engine ECU (Do not connect the harness to the ECU).

Use the electrical tester to measure the resistance between the terminals of the engine ECU (signal check harness) FCV (E31) terminal and ground.

If the measured value is standard (∞Ω ),go to step 5

Otherwise repair or replace the harness.

Perform “After inspection work” of information section

 

5.Inspect disconnection of the fuel cut valve harness

Use the electrical tester to measure the resistance between the terminals of the fuel cut valve vehicle side connector and the engine ECU.

If the measured value is standard (2 Ω or less),go go step 6

Otherwise repair or replace the harness.

Perform “After inspection work” of information section

 

6.Check the DTC detected(Engine ECU)

Connect the vehicle to HINO DXⅡ.

Set the starter switch to the “ON” position.

Select [Engine] and check if the DTC (P0006 or P0007) has been detected.

 

If P0006 or P0007 detected,replace the engine ECU.

Perform “After inspection work” of information section

 

Otherwise procedure completed.

Perform “After inspection work” of information section