Mitsubishi FUEL Manual page 139

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-176, DATA LIST REFERENCE TABLE.)
Check the idle position switch. (Refer to P.13A-195*
Check the following connectors: B-07*
Measure at the throttle position sensor connector B-07*
D Disconnect the connector, and measure at the harness
side.
D Voltage between 2 and earth (Ignition switch: ON)
OK: 4 V or higher
D Continuity between 1 and earth
OK: Continuity
Measure at the accelerator pedal position sensor connector
3
B-41* .
D Disconnect the connector, and measure at the harness
side.
D Voltage between 3 and earth (Ignition switch: ON)
OK: 4 V or higher
D Continuity between 4 and earth
OK: Continuity
OK
NG
Check the following
connectors: C-166,
C-167
OK
Check trouble symptom.
Replace the engine-ECU.
NOTE:
1
* : Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
2
* : Vehicles without TCL and vehicles without ASC.
3
* : Vehicles with TCL and vehicles with ASC.
MPI <6A1> -
NG
1
.)
OK
2 3
, B-41*
OK
2
.
Repair
NG
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
OK
Transient malfunction (Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
NG
Replace the throttle position sensor (TPS).*
Replace the accelerator pedal position sensor (APS).*
NG
Repair
NG
Check the following
connectors: C-166,
C-167
OK
Check trouble symptom.
NG
Check the harness wire between engine-ECU and throttle
position sensor connector.*
Check the harness wire between engine-ECU and accelerator
pedal position sensor connector.*
OK
Replace the engine-
ECU.
13A-139
2
3
NG
Repair
2
3
NG
Repair