Page 434 - Foton Workshop Manual - Tunland (AT)

04-288 DIAGNOSTICS - ENGINE CONTROL SYSTEM

DTC inspection
DTC DTC definition Trouble location
conditions
• Exhaust pressure
sensor
• The circuit in
Exhaust pressure
04 • When the key engine harness,
sensor circuit -
switch is in ON joint or sensor is
Voltage is above
P2373 position, the open.
normal or shorted to diagnosis continues • The signal wire is
high voltage power
to run. short to the sensor
supply
power or battery
voltage
• ECM

• Exhaust pressure
sensor
Exhaust pressure • The circuit in
• When the key
sensor circuit - engine harness,
switch is in ON
Voltage is below joint or sensor is
P2374 position, the
normal or shorted to open.
diagnosis continues
low voltage power • Power line is open
to run.
supply or shorted to
ground
• ECM

• After the key switch
is switched off and
the engine coolant • Exhaust pressure
temperature is sensor pipe
Exhaust pressure - higher than 70°C or • Exhaust pressure
data is unstable, 158°F, the first part sensor and its
P2554
intermittent or will run harness
incorrect immediately. • Turbocharger
• During engine actuator
operation, the other • ECM
part of the
diagnosis will run.

Diagnosis Procedure

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