Mitsubishi FUEL Manual page 138

13A-138
MUT-II Self-Diag code
Is any diagnosis code other than No.
P0505 output?
No
Check intake air hose and intake
manifold for air intake.
OK
Check the throttle body (around the
throttle valve) for contamination.
OK
Check the idle speed control (ISC)
servo. (Refer to P.13A-199*.)
OK
Check the following connector: B-10
OK
Measure at the idle control servo
connector B-10.
D Disconnect the connector, and
measure at the harness side.
D Ignition switch: ON
D The voltage between terminal 2
and earth
D The voltage between terminal 5
and earth
OK: System voltage
OK
Measure at engine-ECU connector
C-168.
D Use test harness (MB991709) to
connecttheconnector,andmeasure
at the pick-up harness side.
D Thevoltagebetweenterminal14and
earth
D Thevoltagebetweenterminal15and
earth
D Thevoltagebetweenterminal28and
earth
D Thevoltagebetweenterminal29and
earth
OK: The voltage changes as fol-
lows for three seconds when
the ignition switch is turned
ON.
(when using a circuit tester)
5 V and 8 V alternates
(when using an analyzer)
1 V or less and system voltage
alternates
OK
Check the following connector:
C-168
OK
Check the harness wire between the
engine control relay and the idle
speed control servo, and between
the idle speed control servo and the
engine-ECU.
OK
Check trouble symptoms.
NG
Replace the engine-ECU.
NOTE:
*: Refer to the '97 GALANT Workshop Manual (Pub. No. PWDE9611)
MPI <6A1> -
Troubleshooting
Yes
Refer to P.13A-99,
CHART FOR DIAGNOSIS CODES.
NG
Repair
NG
Clean around the throttle valve.
(Refer to P.13A-184*.)
NG
Replace
NG
Repair
NG
Check the following connector:
C-31
Check the harness wire between the
engine control relay and the idle speed
control servo, and repair if necessary.
NG
Check the following connector:
C-168
Check the harness wire between the
idle speed control servo and the engine-
ECU.
Replace the engine-ECU.
NG
Repair
NG
Repair
OK
Intermittent malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
INSPECTION
OK
NG
OK
NG
OK
Repair
Repair