Dtc: P244A: Filtering Performance (Missing Substrate) - Hino 238 Workshop Manual

DTC: P244A
P244A: Filtering performance (missing substrate)
INFORMATION [missing substrate]
PTO
accelerator sensor
1. Technical description
• ECU constantly calculate and accumulate the amount of soot emission from the engine.
• Based on the values of the differential pressure sensor and the DPR temperature sensor, ECU detects clogging and
erosion of the DPR.
<Description of malfunction>
• Abnormal drop in differential pressure in DPR part is detected.
2. DTC set condition
(1) DTC detection condition
• The engine must not be stopped.
• After automatic regeneration
• Burner in inactive status
• Calculated exhaust gas flow rate of 205 L/s or higher
• Exhaust brake is inactive.
(2) Judgement criteria
ENGINE CONTROL SYSTEM (J08E)
KSE
KSF
KSJ
KSK
KSL
Engine
ECU
Exhaust gas Exhaust gas
temperature temperature
sensor sensor
(DOC outlet) (DOC inlet)
LCY
(TEX1)
LCZ
(GND1)
Differential
pressure
sensor
(VCC)
(VOUT)
(GND)
4–1135
EN01H16F01030F03001145
(TEX3)
(GND3)
SAPH16F010300867