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- Firstly, perform the check of "DISCONNECTION OF SOLENOID RELAY (DTC No.C0278)".
- Set the starter switch to "LOCK", disconnect the 24 pin connector of ABS actuator.
- Measure the resistance between 16th and 18th terminals of the 24 pin connector (actuator side).
Standard: 26-40 Ω
Abnormality of the ABS actuator.
[2]-3
- Measure the resistance between 7th and 16th terminals of the 24 pin connector (actuator side).
Standard: 13-20 Ω
Abnormality of the ABS actuator.
[3] WIRE HARNESS CHECK
- Disconnect the 22 pin connector of ECU.
- Measure the resistance between 7th terminal of the 22 pin connector of ECU (chassis harness side) and 18th terminal of the 24 pin connector of ABS actuator (chassis harness side).
Standard: Less than 5 Ω
Abnormality of the wire harness.
[3]-3
- Measure the resistance between 1st terminal of the 22 pin connector
of ECU (chassis harness side) and 7th terminal of the 24 pin connector of ABS actuator (chassis harness side).
Standard: Less than 5 Ω
Abnormality of the wire harness.
[4] ECU CHECK
- Connect all the connector, turn the starter switch to "ON".
- Measure the voltage between 7th terminal of the 22 pin connector of ECU and 2nd terminal of the 31 pin connector of ECU. (Leaving the connector connected with ECU.)
Standard: 20-28V
Abnormality of the ECU power supply voltage.
[4]-3
- Measure the voltage between 1st terminal of the 22 pin connector and 2nd terminal of the 31 pin connector. (Leaving the connector connected with ECU.)
Standard: 20-28V
Abnormality of the ECU power supply voltage.
Normal.
- Confirm the DTC C0256 is inactive
- Start the engine and let it idling condition.
- Verify the DTC C0256 is inactive.
- DTC Clear
- Clear the DTC with Hino DX
- Confirm the same DTC is not reoccurred
- C0256 is reoccur: Return to first process
- Other DTC appear: Refer to concerned Trouble shooting
Complete
