Mitsubishi Eclipse 1990 Service Manual page 598

Has the engine warmed up sufficiently when the exhaust gas is
tested? (Check with owner.)
Check all vacuum hoses and connectors.
Check electrical wires and connectors for obvious problems.
Check the exhaust system for missing
Check the ignition timing
Check the ignition timing
(Refer to GROUP
SCAN TOOL list
21 Engine coolant temperature sensor
(Refer to P.
25 Barometric pressure sensor (Refer to
I OK
,
SCAN TOOL Data list
59 Heated oxygen sensor (rear)' (Refer to
Transaxle: gear
Drive with wide open throttle
1 0 0 0
O K : 6 0 0
SCAN TOOL Data list
11 Heated oxygen sensor (front) (Refer to
OK: 600 1000 when racing suddenly
SCAN TOOL Data list
11 Heated oxygen sensor (front) (Refer to
OK: 0 400 and 600 1000
and 2500
Check the fuel pressure. (Refer to
Check the injectors for operation sound.
Check the injector for fuel leakages.
Check the spark plugs, spark plug cables.
Check the compression pressure.
Check the positive crankcase ventilation system.
Check the evaporative emission control system.
ENGINE (TURBO)
AND ENGINE>
No
Engine (Turbo)>.
Engine>.
OK
N
range
OK
OK
alternately when idling
TSB Revision
Troubleshooting
Let the engine warm up sufficiently before testing the exhaust gas.
Repair
Refer to
TROUBLE CODE.
NG
Check that the crankshaft position sensor and timing belt cover
are properly.
Check the engine coolant temperature sensor circuit malfunction.
NG
Check the intake air temperature sensor circuit malfunction. (Refer
to INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE
NG
Check the barometric pressure sensor circuit
to INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE
G
Check the oxygen sensor circuit malfunction (bank 1 sensor 2).
TIC TROUBLE CODE
NG
Check the oxygen sensor circuit malfunction (bank 1 sensor 1).
TIC TROUBLE CODE
OK
Check the EGR system. (Refer to GROUP 17
System)
OK
Measure the CO
Check troub symptom.
Replace the three-way catalytic converter.
,
INSPECTION CHART
Emission Control
NG
sensor
(Refer