Page 447 - Foton Workshop Manual - Tunland (AT)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-301

P3152，P3153，P3155，P3156，P3247-POSTPRECESSING

PREHEAT DIESEL OXIDATION CONVERTER SENSOR INLET
TEMPERATURE FAULT

P3152-POSTPRECESSING PREHEAT DIESEL OXIDATION
CONVERTER INLET TEMPERATURE SENSOR CIRCUIT - 04
VOLTAGE IS ABOVE NORMAL OR SHORTED TO HIGH VOLTAGE

POWER SUPPLY
P3153- POSTPRECESSING PREHEAT DIESEL OXIDATION

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

P3155-POSTPRECESSING PREHEAT DIESEL OXIDATION
CONVERTER INLET TEMPERATURE SENSOR CIRCUIT -

VOLTAGE IS ABOVE NORMAL OR SHORTED TO HIGH VOLTAGE
POWER SUPPLY
P3156-POSTPRECESSING PREHEAT DIESEL OXIDATION

CONVERTER INLET TEMPERATURE SENSOR CIRCUIT -
VOLTAGE IS BELOW NORMAL OR SHORTED TO LOW VOLTAGE

POWER SUPPLY
P3247-POSTPRECESSING PREHEAT DIESEL OXIDATION
CONVERTER INLET TEMPERATURE - DATA IS VALID BUT

ABOVE NORMAL OPERATING RANGE - MEDIUM SEVERITY
LEVEL

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

Page 447