This instruction show you guide on how to repair HINO truck 600 series P0006 fuel cutoff valve GND short-circuit trouble.
Preparations:
2023.01 HINO Diagnostic Explorer DX3/DX2 Diagnostic Software 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
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