Mitsubishi FUEL Manual page 154

13A-154
INSPECTION PROCEDURE 10
Idling speed is low. (Improper idling speed)
In cases such as the above, the cause is probably that the intake air volume during
idling is too small.
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
29 Inhibitor 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 P0150.)
NG
Check the engine coolant temperature sensor system.
(Refer to P.13A-106, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE 21.)
NG
Check the ignition switch-ST.
(Refer to P.13A-173, INSPECTION PROCEDURE 29.)
NG
Clean the throttle valve area. (Refer to P.13A-184*.)
Check and adjust the fixed SAS. (Refer to P.13A-187*.)