Page 857 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-171

04
DTC inspection
DTC DTC definition Trouble location
conditions
• Variable geometry
turbocharger (VGT)
• During engine
Intake manifold 1 actuator and its
operation, the
P3361 pressure - abnormal harness
diagnosis continues
update rate • Postprocessing
to run
system
• ECM

Diagnosis Procedure

CAUTION

• 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 pressure sensor ?

Is the inspection result normal?
YES>To step 2.
NO>Intermittent trouble exists.

2 . Check the power circuit of the turbocharger actuator
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect turbocharger actuator connector E05.
(d) Connect the battery negative cable.
(e) Ignition switch: ON.