| Symptom of malfunction | - |
| Output limit, etc. | Without |
| Malfunction indicator light | Light out |
| Multi information | Engine system failure |
| Possible cause of malfunction | Malfunction of exhaust temperature sensor (Lo) (3rd from upstream) located after DPF |
Detail
- Set the starter key to the "LOCK" position and connect the signal check harness.
- Disconnect the signal check harness connectors from the ECU and measure resistance between the terminals E41 and V57.
Temperature in measurement (ºC {ºF}) Resistance
ECU terminal No. Description of terminal
NO
Go to [2] Measuring resistance between sensor terminals.YES
Fault in engine ECU, fault in ECU connectors, short-circuit in harness
- Disconnect the exhaust temperature sensor (located after DPF) connector.
- Measure resistance between the 1st and 2nd terminals of the exhaust temperature sensor (located after DPF) connector (component side).
Temperature in measurement (ºC {ºF}) Resistance
NO
Fault in exhaust temperature sensor (located after DPF)YES
Disconnection of harness, fault in connector
- Confirm the DTC P242C is inactive
- Start the engine and let it idling condition.
- Verify the DTC P242C is inactive.
- DTC Clear
- Clear the DTC with Hino DX
- Confirm the same DTC is not reoccurred
- P242C is reoccur: Return to first process
- Other DTC appear: Refer to concerned Trouble shooting
Complete
