Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
207
3. DTC Diagnosis
■
ECM pins referred to below should be subject to the actual wire harness diagrams.
Fault code: P0107 “the intake pressure sensor is short to ground”
S/N
Step
Check result
Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to ON position.
Next step
Yes
To Step 5
2
Check if the intake pressure in the data flow is about 101kpa
(depending on the air pressure then).
。
No
Next step
Yes
To Step 5
3
Unplug the connector of intake pressure sensor on the harness, and
measure if the voltage between Pins 3# and 1# of this connector is
about 5V by the multimeter.
No
Next step
Yes
Repair or replace
the harness
4
Check if the circuits connecting Pins 40#, 19# and 59# of ECU
respectively to Pins 1#, 3# and 4# of sensor connector are short to
ground.
No
Next step
Yes
Diagnosis help
5
Start the engine and run the engine idly. Slowly depress the
accelerator pedal and almost open the throttle completely; observe the
change of the “Intake pressure” value on the diagnosis meter, and at
this moment, the displayed value shall not change significantly; fast
depress the accelerator pedal and almost open the throttle completely,
and at this moment, the displayed value can reach above 90kpa
instantly.
No
Replace the
sensor
Fault code: P0108 “the intake pressure sensor is short to power source”
S/N
Step
Check result
Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to ON position.
Next step
Yes
To Step 5
2
Check if the intake pressure in the data flow is about 101kpa
(depending on the air pressure then).
No
Next step
Yes
To Step 5
3
Unplug the connector of intake pressure sensor on the harness, and
measure if the voltage between Pins 3# and 1# of this connector is
about 5V by the multimeter.
No
Next step
Yes
Repair or replace
the harness
4
Check if the circuits connecting Pins 40#, 19# and 59# of ECU
respectively to Pins 1#, 3# and 4# of sensor connector are open or
short to power source.
No
Next step
Yes
Diagnosis help
5
Start the engine and run the engine idly. Slowly depress the
accelerator pedal and almost open the throttle completely; observe the
change of the “Intake pressure” value on the diagnosis meter, and at
this moment, the displayed value shall not change significantly; fast
depress the accelerator pedal and almost open the throttle completely,
and at this moment, the displayed value can reach above 90kpa
instantly.
No
Replace the
sensor
