Mitsubishi FUEL Manual page 207

INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No. P0100 Air flow sensor system
Range of Check
D Engine speed: 500 r/min or more
Set Conditions
D The sensor output frequency is 3.3 Hz or less for four seconds.
MUT-II Data list
12 Air flow sensor (Refer to
P.13I-98, 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 3 and
earth (Ignition switch: ON)
OK: 4.8 - 5.2 V
(2) Voltage between terminal 4 and
earth (Ignition switch: ON)
OK: System voltage
(3) Resistance between terminal 5
and earth
OK: 2 W or less
OK
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GDI -
Troubleshooting
OK
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
Repair
(1) NG
Measure at engine-ECU connector
C-164 <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 61
<M/T>, 65 <A/T> and earth
OK: 4.8 - 5.2 V
Check the following connectors:
C-164 <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.
(2) NG
Check the following connectors:
C-31, C-49 <LHD>
Check the harness between the air
flow sensor and the engine control
relay, and repair if necessary.
(3) NG
Check the following connectors:
C-163 <M/T>, C-175 <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.
Probable cause
D Malfunction of air flow sensor
D Open or short circuit in air flow 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
OK
NG
13I-13
Check the following connectors:
C-164 <M/T>, C-176 <A/T>
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
Repair
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.