Page 268 - Foton Workshop Manual - Tunland (AT)
P. 268
04-122 DIAGNOSTICS - ENGINE CONTROL SYSTEM
Failure code Diagnostic items (DTC definition) Trouble location
• EGR valve position sensor
Exhaust gas recirculation (EGR) • EGR valve position sensor connec-
P1228 valve position - Data is unstable, in- tor is out of contact, the harness is
termittent or incorrect open or shorted
04 • ECM
• Accelerator pedal position sensor
Accelerator pedal or lever position
• Accelerator pedal position sensor
sensor 2 circuit - voltage is higher
P1239 connector is in poor contact, the
than normal or short circuit to high harness is open or shorted
voltage power supply
• ECM
• Accelerator pedal position sensor
Accelerator pedal or lever position
• Accelerator pedal position sensor
sensor 2 circuit - voltage is lower
P1241 connector is in poor contact, the
than normal or short circuit to low
harness is open or shorted
voltage power supply
• ECM
• Accelerator pedal position sensor
Accelerator pedal or lever position • Accelerator pedal position sensor
P1242 sensor 1 and 2 - data is unstable, in- connector is in poor contact, the
termittent or incorrect harness is open or shorted
• ECM
• Postprocessing diesel oxidation
Postprocessing diesel fuel oxidation catalyst
P1664
catalyst missing - Problem exist • Postprocessing fuel injector
• ECM and its harness
Postprocessing diesel fuel oxidation • Postprocessing diesel oxidation
catalyst system efficiency - data Valid catalyst
P1691
but below normal work range - medi- • Exhaust system
um severity level • ECM and its harness
• ECM power supply short circuit,
Sensor power 5 circuit - voltage is
sensor damage, short wiring har-
P1695 above normal or shorted to low volt-
ness
age power supply
• ECM
• ECM power supply short circuit,
Sensor power 5 circuit - voltage is
sensor damage, short wiring har-
P1696 below normal or shorted to low volt- ness
age power supply
• ECM
• Fuel hydrous sensor
Fuel hydrous indicator - data is valid • Fuel water sensor connector is out
P1852 but above normal operating range - of contact, the harness is open or
medium severity level shorted
• ECM
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