Page 492 - Foton Workshop Manual - Tunland (AT)
P. 492
04-346 DIAGNOSTICS - ENGINE CONTROL SYSTEM
P4253，P4254，P4255，P4256，P4257，P4258，
P4259-POSTPRECESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR FAULT
P4253-POSTPROCESSING PREHEAT DIESEL OXIDATION
04 CONVERTER TEMPERATURE SENSOR MODULE - INTELLIGENT
DEVICE OR COMPONENT FAULT
P4254-POSTPROCESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR MODULE - VOLTAGE IS
ABOVE NORMAL OR SHORTED TO HIGH VOLTAGE POWER
SUPPLY
P4255-POSTPROOCESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR MODULE - VOLTAGE IS
BELOW NORMAL OR SHORTED TO LOW VOLTAGE POWER
SUPPLY
P4256-POSTPROCESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR MODULE - DATA IS VALID
BUT ABOVE NORMAL OPERATING RANGE - LOWEST SEVERITY
LEVEL
P4257-POSTPROCESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR MODULE - ABNORMAL
UPDATE RATE
P4258- POSTPRECESSING PREHEAT DIESEL OXIDATION
CONVERTER TEMPERATURE SENSOR MODULE - UNKNOWN
ROOT CAUSE
P4259-POSTPRECESSING DIESEL PARTICULATE FILTER
TEMPERATURE SENSOR MODULE - UNKNOWN ROOT CAUSE
Description
1 . The postprocessing preheat DOC temperature sensor module is an intelligent
device that communicate with ECM via the J1939 data communication interface.
The postprocessing preheat DOC temperature sensor module directly connect
to the battery power and ground.The postprocessing preheat DOC temperature
sensor module performs autonomous internal diagnosis and reports failure to
the main engine ECM through J1939 data communication interface.The
postprocessing preheat DOC temperature sensor module is sued to measure
the emission from the engine preheat DOC temperature sensor module.
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