Mitsubishi Lancer Evolution 7. Manual — part 179
MPI -
Troubleshooting
13A-15
Code No. P0105 Barometric pressure sensor system
Probable cause
Inspection Range
D
2 seconds after the ignition switch is set to the “ON” position, or after the
completion of start of engine.
Evaluation Conditions
D
The sensor output voltage is more than 4.5 V for 4 seconds (Equivalent to
air pressure of more than 114 kPa)
or
D
The sensor output voltage is less than 0.2 V for 4 seconds (Equivalent to air
pressure of less than 5 kPa)
D
Barometric pressure sensor malfunction
D
Barometric pressure sensor circuit disconnection,
short-circuit, or connector contact defect
D
Engine-ECU malfunction
OK
To the next page
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-II Data list
D
No. 25 Barometric pressure
sensor (Refer to P.13A-103.)
NG
Replace engine-ECU.
OK
Check the harness between the air
flow sensor and engine-ECU.
D
Check the earth wire for
disconnection and damage.
NG
Repair
(2) NG
Check the following connector:
C-115
NG
Repair
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-II Data list
D
No. 25 Barometric pressure
sensor (Refer to P.13A-103.)
NG
Replace engine-ECU.
OK
Check the harness between the air
flow sensor and engine-ECU.
D
Check for short-circuit of the
power cable.
NG
Repair
NG
Check the following connector:
C-115
NG
Repair
OK
Check and repair the harness between
the air flow sensor and engine-ECU.
D
Check for disconnection of the
power cable.
NG
Repair
OK
Measure at the B-31 air flow sensor
connector.
D
Disconnect the connector to
measure at the harness side
(1) Voltage between terminal No. 1
and earth
(Ignition switch: ON)
OK: 4.9 - 5.1 V
(2) Resistance between terminal No.
5 and earth.
OK: Less than 2 Ω
(1) NG
Measure at the C-115 engine-ECU
connector.
D
Measure the engine-ECU terminal
voltage.
D
Ignition switch: ON
D
Voltage between terminal No. 81
and earth
OK: 4.9 - 5.1 V
OK
Check the following connector:
C-115
NG
Check the following connector:
B-31
NG
Repair
MUT-II Data list
D
No. 25 Barometric pressure
sensor (Refer to P.13A-103.)
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
MPI -
Troubleshooting
13A-16
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-II Data list
D
No. 25 Barometric pressure
sensor (Refer to P.13A-103.)
NG
Replace engine-ECU.
OK
Check the following connector:
C-115
NG
Repair
OK
Check and repair the harness between
the air flow sensor and engine-ECU.
D
Check for disconnection and
damage of the output wire.
OK
Measure at the C-115 engine-ECU
connector.
D
Measure the engine-ECU terminal
voltage.
D
Ignition switch: ON
D
Voltage between terminal No. 85
and earth.
OK: High 0 m 3.8 - 4.2 V
High 600 m 3.5 - 3.9 V
High 1,200 m 3.3 - 3.7 V
High 1,800 m 3.0 - 3.4 V
NG
Check the following connector:
C-115
NG
Repair
OK
Replace the air flow sensor.
OK
Check the harness between the air
flow sensor and engine-ECU.
D
Check for short-circuit and
damage of the output wire.
NG
Repair
(3) NG
Check the following connector:
C-115
NG
Repair
OK
Check and repair the harness between
the air flow sensor and engine-ECU.
D
Check for damage of the power
cable.
D
Check for damage of the earth
wire.
OK
Measure at the B-31 air flow sensor
connector.
D
Using the test harness
(MB991709), connect only
connector terminals No. 1, No. 2,
and No. 5, and measure at the
pickup harness.
D
Ignition switch: ON
(1) Voltage between terminal No. 1
and earth
OK: 4.9 - 5.1 V
(2) Voltage between terminal No. 5
and earth
OK: Less than 0.5 V
(3) Voltage from No. 2 to earth
OK: High 0 m 3.8 - 4.2 V
High 600 m 3.5 - 3.9 V
High 1,200 m 3.3 - 3.7 V
High 1,800 m 3.0 - 3.4 V
(1), (2) NG
Check the following connectors:
C-115
NG
Repair
From the previous page
Code No. P0110 Intake air temperature sensor system
Probable cause
Inspection Range
D
After setting the ignition switch to the “ON” position, or after 2 seconds from
completion of start.
Evaluation Conditions
D
The sensor output voltage is more than 4.6 V for 4 seconds (Equivalent to intake
air temperature less than -40_C)
or
D
The sensor output voltage is less than 0.2 V for 4 seconds (Equivalent to intake
air temperature of more than 120_C)
D
Intake air temperature sensor malfunction
D
Intake air temperature sensor circuit disconnection,
short-circuit, or connector contact defect
D
Engine-ECU malfunction
MPI -
Troubleshooting
13A-17
OK
Check the intake air temperature
sensor alone. (Refer to P.13A-132.)
NG
Replace the intake air temperature
sensor.
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
To the next page
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-II Data list
D
No. 13 intake air temperature
sensor
OK: Ambient temperature (More
or less the same as air
temperature)
NG
Replace engine-ECU.
OK
Check the harness between the air
flow sensor and engine-ECU.
D
Check for short-circuit of the
output wire.
NG
Repair
OK
Check and repair the harness between
the air flow sensor and engine-ECU.
D
Check for disconnection of the
output wire.
NG
Repair
NG
Check the following connector:
C-115
NG
Repair
(2) NG
Measure at the C-115 engine-ECU
connector.
D
Measure the engine-ECU terminal
voltage.
D
Disconnect the B-31 air flow
sensor connector.
D
Ignition switch: ON
D
Voltage between terminal No. 72
and earth.
OK: 4.5 - 4.9 V
OK
Check the following connector:
C-115
OK
MUT-II Data list
D
No. 13 Intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
NG
Replace the engine-ECU.
OK
Check the harness between the air
flow sensor and engine-ECU.
D
Check for disconnection and
damage of the earth wire.
NG
Repair
OK
Measure at the B-31 air flow sensor
connector.
D
Disconnect the connector to
measure at the harness side
(1) Resistance between terminal No.
5 and earth
OK: Less than 2 Ω
(2) Voltage between terminal No. 6
and earth
(Ignition switch: ON)
OK: 4.5 - 4.9 V
(1) NG
Check the following connector:
C-115
NG
Repair
NG
Check the following connector:
B-31
NG
Repair
MUT-II Data list
D
No. 13 Intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
MPI -
Troubleshooting
13A-18
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
MUT-II Data list
D
No. 13 intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
NG
Replace engine-ECU.
OK
Check and repair the harness between
the air flow sensor and engine-ECU.
D
Check for damage of the output
wire.
D
Check for damage of the earth
wire.
OK
Measure at the B-31 air flow sensor
connector.
D
Using the test harness
(MB991709), connecting only
connector terminals No. 5 and
No. 6, and measure at the
pickup harness.
D
Ignition switch: ON
D
Voltage between terminal No. 6
and earth.
OK: Ambient temperature -20_C
3.8 - 4.4 V
Ambient temperature 0_C
3.2 - 3.8 V
Ambient temperature 20_C
2.3 - 2.9 V
Ambient temperature 40_C
1.5 - 2.1 V
Ambient temperature 60_C
0.8 - 1.4 V
Ambient temperature 80_C
0.4 - 1.0 V
NG
Check the following connectors:
C-115
NG
Repair
From the previous page
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст