Page 931 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-245

P3313，P3314，P3316，P3317，P3319， 04

P3311-POSTPRECESSING DIESEL OXIDATION CONVERTER
INLET TEMPERATURE SENSOR FAULT

P3313-POSTPRECESSING DIESEL OXIDATION CONVERTER
INLET TEMPERATURE SENSOR CIRCUIT - VOLTAGE IS BELOW
NORMAL OR SHORTED TO LOW VOLTAGE POWER SUPPLY

P3314-POSTPRECESSING DIESEL OXIDATION CONVERTER
INLET TEMPERATURE SENSOR CIRCUIT - VOLTAGE IS ABOVE

NORMAL OR SHORTED TO HIGH VOLTAGE POWER SUPPLY
P3316-POSTPRECESSING DIESEL PARTICULATE FILTER INLET
TEMPERATURE SENSOR CIRCUIT - VOLTAGE IS BELOW

NORMAL OR SHORTED TO LOW VOLTAGE POWER SUPPLY
P3317-POSTPRECESSING DIESEL PARTICULATE FILTER INLET

TEMPERATURE SENSOR CIRCUIT - VOLTAGE IS ABOVE
NORMAL OR SHORTED TO HIGH VOLTAGE POWER SUPPLY
P3311-POSTPROCESSING DIESEL PARTICULATE FILTER INLET

TEMPERATURE - DATA IS VALID BUT ABOVE NORMAL
OPERATING RANGE - HIGHEST SEVERITY LEVEL

Description
1 . The DOC inlet temperature sensor is an intelligent device that communicate with
ECM via the J1939 data communication interface.The DOC inlet temperature
sensor monitors the engine exhaust temperature into the DOC.The DOC inlet
temperature sensor performs autonomous diagnosis and reports failure to the
main engine ECM.The DOC inlet temperature sensor is permanently fixed on
the postprocessing preheat DPF temperature sensor module.They work as a
single unit and cannot be replaced separately.