P0546: Exhaust Gas Temperature Sensor (Doc1 Inlet) - Out Of Range - Hino Motors HINO 155 series Workshop Manual

2–594
P0546: Exhaust gas temperature sensor (DOC1 inlet) - out of range (Out of range high)
INFORMATION
Exhaust gas
temperature sensor
(DOC1 inlet)
1. Technical description
• The exhaust gas temperature sensor (DOC1 inlet) consistently detects exhaust gas temperature.
• A reading taken by the exhaust gas temperature sensor (DOC1 inlet) is used to control DPR regeneration.
<Description of malfunction>
• Exhaust gas temperature cannot be correctly recognized.
2. DTC set condition
(1) DTC detection condition
• Intake air temperature is -20 C {-4 F} or higher.
• Battery voltage is in the range of 10 V to 16 V.
• The engine speed remains at 690 r/min or more for 5 seconds or more.
(2) Judgement criteria
• Voltage of the exhaust gas temperature sensor (DOC1 inlet) remains at 4.958 V or higher (-46 C {-50.8 F} or
lower) for 3 seconds.
3. Reset condition
• After restoration to normal condition
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
• –
<Symptoms on the vehicle due to malfunction>
• –
6. Pre-inspection work
• Check that the battery voltage is in the normal range.
7. After-inspection work
• Clear all past DTCs.
• Check that no DTC is stored after test drive.
ENGINE (J05E)/TROUBLESHOOTING
VKF TYP 0.001A
(TOIL)
ZKT TYP 0.004A
(GND)
Engine ECU
XYD (THO1)
XJQ
(E5)
SHTS021270300544