MPI <4G9> -
Troubleshooting
13A-129
INSPECTION PROCEDURE 6
Initial combustion but no complete combustion
(starting impossible)
Probable cause
In such cases as the above, the cause is probably that the spark plugs are generating
sparks but the sparks are weak, or the initial mixture for starting is not appropriate.
D
Malfunction of the ignition system
D
Malfunction of the injector system
D
Foreign materials in fuel
D
Poor compression
D
Malfunction
of
the
engine-ECU
<M/T>
or
engine-A/T-ECU <A/T>
OK
Check the following items.
D
Check the ignition coil, spark plugs, spark plug cables.
D
Check if the injectors are clogged.
D
Check the compression pressure.
D
Check fuel lines for clogging.
D
Check if foreign materials (water, alcohol, etc.) got into fuel.
NG
Check that the crank angle sensor is installed properly.
No
Check the ignition timing when cranking.
OK:
Approx. 5
_
BTDC
OK
D
Clean the throttle valve area. (Refer to P.13A-22*
2
.)
D
Check and adjust the fixed SAS. (Refer to P.13A-76*
1
.)
NG
Check the ISC servo sys-
tem. (Refer to P.13A-120,
INSPECTION PROCE-
DURE FOR DIAGNOSIS
CODE P0505.)
Yes
Check ISC servo for op-
eration sound.
(Refer to P.13-26*
2
.)
OK
Is starting good if the engine is cranked with the accelerator pedal
slightly depressed?
OK
Can any sound be heard from the injectors when cranking?
NG
Check theinjector system. (Refer to P.13A-110, INSPECTION PRO-
CEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)
OK
MUT-
II
Data list
18 Ignition switch-ST (Refer to P.13A-154.)
NG
Check the ignition switch-ST system.
(Refer to P.13A-150, INSPECTION PROCEDURE 28.)
OK
MUT-
II
Data list
21 Engine coolant temperature sensor (Refer to P.13A-154.)
NG
Check the engine coolant temperature sensor system.
(Refer to P.13A-98, INSPECTION PROCEDURE FOR DIAGNOSIS
CODE P0115.)
No
MUT-
II
Actuator test
07 Fuel pump (Refer to P.13A-158.)
NG
Check the fuel pump system.
(Refer to P.13A-148, INSPECTION PROCEDURE 27.)
OK
MUT-
II
Self-Diag code
Are diagnosis codes displayed?
Yes
Refer to P.13A-90, INSPECTION CHART FOR DIAGNOSIS CODE.
Check battery voltage when cranking.
OK:
8 V or higher
NG
Check the battery. (Refer to GROUP 54 - Battery.)
NOTE
*1: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
*2: Refer to the 2000 COLT/LANCER Workshop Manual (Pub. No. PWME9511-B).