Page 305 - Foton Workshop Manual - Tunland (AT)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-159

DTC inspection
DTC DTC definition Trouble location
conditions
Intake manifold 1
temperature sensor
circuit - voltage is
P153
above normal or short 04
circuit to high voltage
power supply
Intake manifold 1
temperature sensor • Intake manifold
circuit - voltage is pressure
P154
below normal or short temperature sensor
• When the key
circuit to low voltage • The circuit of the
power supply switch is in ON wiring harness, joint
position, the
Intake manifold 1 diagnosis continues or sensor is open.
temperature - Data is to run. • The signal circuit is
valid but above open or shorted to
P155 the power supply.
normal operating
range - highest • ECM
severity level

Intake manifold 1
temperature - Data is
valid but above
P2964
normal operating
range - lowest
severity level

Diagnosis Procedure

NOTICE

• To implement the following steps, ensure that ECM is grounded properly.
• Before conducting electric diagnosis, do refer to the reference circuit diagram
and the element information.
• Before conducting measurement, check the pins of connectors for rupture,
looseness and rust, and ensure that the pins are contacted properly.
• If the connection is good, check the sensor signal voltage when moving the
connector and harness. If a fault occurs, the voltage display on the diagnostic
instrument will change.

1 . DTC inspection
(a) Ignition switch: OFF.
(b) Connect the diagnostic apparatus.
(c) Use the diagnostic apparatus, read the fault code.
(d) Confirm whether there is fault code related to intake manifold 1 temperature sensor ?

Is the inspection result normal?

Page 305