MPI <4G1> -
Troubleshooting
13A-42
INSPECTION PROCEDURE 5
No initial combustion (starting impossible)
Probable cause
In cases such as the above, the cause is probably that a spark plug is defective,
or that the supply of fuel to the combustion chamber is defective.
In addition, foreign materials (water, kerosene, etc.) may be mixed with the fuel.
D
Malfunction of the ignition system
D
Malfunction of the fuel pump system
D
Malfunction of the injectors
D
Malfunction of the engine-ECU
D
Malfunction of the immobilizer system
D
Foreign materials in fuel
Check battery voltage when cranking.
OK:
8 V or higher
NG
Check the battery. (Refer to GROUP 54 - Battery.)
OK
Is an immobilizer-ECU diagnosis code displayed?
Yes
Check the immobilizer.
(Refer to GROUP 54 - Ignition Key and Immobilizer.)
OK
Can any sound be heard from the injectors when cranking?
NG
Check the injector system. (Refer to P.13A-26, INSPECTION PRO-
CEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)
OK
Check the following items.
D
Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle service.)
D
Check if the injectors are clogged.
D
Check if foreign materials (water, alcohol, etc.) got into fuel.
D
Check the compression pressure.
D
Check the immobilizer system. (Refer to GROUP 54 - Ignition Key and Immobilizer.)
No
MUT-
II
Data list
16 Voltage of engine-ECU power source (Refer to P.13A-66.)
NG
Check the power supply and ignition switch-IG system.
(Refer to P.13A-59, INSPECTION PROCEDURE 25.)
OK
Does the camshaft rotate at the engine cranking? (When oil filler
cap is removed.)
No
Check timing belt for breakage.
Yes
MUT-
II
Self-Diag code
Are diagnosis codes displayed?
Yes
Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS
CODES.
No
MUT-
II
Data list
22 Crank angle sensor
OK:
Cranking speed is displayed.
No
Check the crank angle sensor system. (Refer to P.13A-29, INSPEC-
TION PROCEDURE FOR DIAGNOSIS CODE P0335.)
OK
MUT-
II
Actuator test
07 Fuel pump (Refer to P.13A-70.)
NG
Check the fuel pump system. (Refer to P.13A-60, INSPECTION
PROCEDURE 26.)
OK
MUT-
II
Data list
21 Engine coolant temperature sensor (Refer to P.13A-66.)
NG
Check the engine coolant temperature sensor system. (Refer to
P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE
P0115.)
OK
Does the engine tachometer display the cranking speed?
D
Set the tachometer of primary voltage detection type.
NG
Check the ignition circuit system.
(Refer to P.13A-63, INSPECTION PROCEDURE 30.)
OK
Check the ignition timing when cranking.
OK:
Approx. 5
_
BTDC
NG
Check that the distributor is installed properly.