Mitsubishi FUEL Manual page 12

13A-12
Code No. P0105 Barometric pressure sensor system
Range of Check
D Two seconds have passed since the ignition switch is turned ON or the
engine starting process is completed.
D Battery voltage: 8 V or more
Set Conditions
D The sensor output voltage is 4.5 V or more for four seconds (equivalent to
114 kPa of barometric pressure)
or
D The sensor output voltage is 0.2 V or less (equivalent to 53 kPa of
barometric pressure)
MUT-II Data list
25 Barometric pressure sensor
(Refer to P.13A-75, DATA LIST
REFERENCE TABLE.)
NG
Check the following connector:
B-12
OK
Measure at air flow sensor connector
B-12.
D Disconnect the connector and
measure at the harness side.
(1) Voltage between terminal 1 and
earth (Ignition switch: ON)
OK: 4.8 - 5.2 V
(2) Resistance between terminal 5
and earth
OK: 2 W or less
OK
To the next page
MPI <4G6> -
OK
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
Repair
(1) NG
Measure at engine-ECU connector
C-40 <M/T> or engine-A/T-ECU
connector C-176 <A/T>.
D Measure the voltage at the
engine-ECU terminal <M/T> or
engine-A/T-ECU terminal <A/T>.
D Ignition switch: ON
D Voltage between terminal 81
<M/T>, 46 <A/T> and earth
OK: 4.8 - 5.2 V
Check the following connectors:
C-40 <M/T>, C-176 <A/T>, C-47
<RHD>
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>.
Check the trouble symptoms.
(2) NG
Check the following connector:
C-40 <M/T>, C-176<A/T>
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>.
Check the trouble symptoms.
Troubleshooting
Probable cause
D Malfunction of barometric pressure sensor
D Open or short circuit in barometric pressure
sensor circuit or loose connector contact
D Malfunction of engine-ECU <M/T>
D Malfunction of engine-A/T-ECU <A/T>
OK
NG
NG
OK
NG
OK
NG
NG
OK
NG
OK
NG
Check the following connectors:
C-40 <M/T>, C-176 <A/T>, C-47
<RHD>
NG
OK
Repair
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>,
and repair if necessary.
Repair
Repair
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
Repair
Repair
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.