Mitsubishi FUEL Manual page 153

INSPECTION PROCEDURE 9
Idling speed is high. (Improper idling speed)
In such cases as the above, the cause is probably that the intake air volume during
idling is too great.
MUT-II Self-Diag code
Are diagnosis codes displayed?
Check the ISC servo for operation sound. (Refer to P.13A-199*.)
MUT-II Data list
26 Idle position switch (Refer to P.13A-176.)
MUT-II Data list
21 Engine coolant temperature sensor (Refer to P.13A-176.)
MUT-II Data list
28 A/C switch (Refer to P.13A-176.)
Basic idle adjustment (Refer to P.13A-188*.)
Check trouble symptom.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <6A1> -
No
OK
OK
OK
OK
Troubleshooting
Probable cause
D Malfunction of the ISC system
D Malfunction of the throttle body
Yes
Refer to P.13A-99, INSPECTION CHART FOR DIAGNOSIS
CODES.
NG
Check the ISC system. (Refer to P.13A-137,INSPECTIONPROCE-
DURE FOR DIAGNOSIS CODE P0505.)
NG
Check the idle position switch system. (Refer to P.13A-139, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0510.)
NG
Check the engine coolant temperature sensor system.
(Refer to P.13A-106, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE P0115.)
NG
Check the A/C switch and A/C relay system.
(Refer to P.13A-174, INSPECTION PROCEDURE 30.)
NG
Clean the throttle valve area. (Refer to P.13A-184*.)
Check and adjust the fixed SAS. (Refer to P.13A-187*.)
13A-153