Mitsubishi FUEL Manual page 41

From the previous page
OK
Check the following connector:
C-34 <M/T>, C-177 <A/T>
OK
Check the harness wires between
the engine control relay and the idle
speed control servo, and between
the idle speed control servo and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
Code No. P0510 Idle Position Switch System
Check Area
D Throttle position sensor output voltage is 2.0 V or more.
Judgment Criteria
D Idle position switch has been turned on.
Check Area
D Repeat the *1 drive and *2 stop 15 times or more.
*1 drive: The vehicle remains under the following conditions for at least two
seconds; engine speed is 1,500 rpm or higher, air flow sensor output
waveform is 100 Hz or higher, and vehicle speed is more than 30 km/h for
two seconds.
*2 stop: The vehicle remains under the following conditions for at least two
seconds; engine speed is 800 rpm or lower, and vehicle speed is less than
1.5 km/h.
Judgment Criteria
D Idle position switch remains off.
MUT-II Data list
26 Idle position switch
(Refer to P.13A-75, DATA LIST REFERENCE TABLE.)
Check the idle position switch. (Refer to P.13A-91*.)
Check the following connector: B-07
Measure at the throttle position sensor connector B-07.
D Disconnect the connector, and measure at the harness
side.
D Voltage between 3 and ground (Ignition switch: ON)
OK: 4 V or higher
D Continuity between 4 and ground
OK: Continuity
OK
NG
Check the following
connector: B-07
OK
Check trouble symptom.
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <4G6> - MPI <4G6> -
NG
Repair
NG
Repair
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
NG
OK
OK
Repair
NG
Troubleshooting Troubleshooting
Probable cause
D Malfunction of idle position switch
D Open or shorted idle position switch circuit, or
loose connector.
D Malfunction of engine-ECU <M/T>
D Malfunction of engine-A/T-ECU <A/T>
OK
Transient malfunction (Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
NG
Replace the throttle position sensor (TPS).
NG
Repair
NG
Check the following
connectors: C-40
<M/T>, C-175 and
C-176 <A/T>, C-47
<LHD>, C-49 <RHD>
OK
Check trouble symptom.
NG
Check the harness wire between engine-ECU <M/T> or
engine-A/T-ECU <A/T> and throttle position sensor connector.
OK
Replace the engine-ECU
<M/T> or engine-A/T-
ECU <A/T>.
13A-41
NG
Repair
NG
Repair