MPI <4G6> -
Troubleshooting
13A-45
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom Inspection
procedure
No.
Reference
page
Communication Communication with all systems is not possible. 1 13A-46
with MUT-
II
is
impossible.
Communication
with
engine-ECU
<M/T>
or
engine-A/T
-ECU
<A/T>
only is not possible.
2 13A-46
Engine warning
lamp and
The engine warning lamp does not illuminate right after the ignition
switch is turned to the ON position.
3 13A-47
related parts
The engine warning lamp remains illuminating and never goes out. 4 13A-47
Starting No initial combustion (starting impossible) 5 13A-48
Initial combustion but no complete combustion
(starting impossible)
6 13A-49
Long time to start (improper starting) 7 13A-50
Idling stability Unstable idling (Rough idling, hunting) 8 13A-51
(Improper idling)
Idling speed is high. (Improper idling speed) 9 13A-53
Idling speed is low. (Improper idling speed) 10 13A-54
Idling stability When the engine is cold, it stalls at idling. (Die out) 11 13A-55
(Engine stalls)
When the engine becomes hot, it stalls at idling. (Die out) 12 13A-56
The engine stalls when starting the car. (Pass out) 13 13A-58
The engine stalls when decelerating. 14 13A-58
Driving Hesitation, sag or stumble 15 13A-59
The feeling of impact or vibration when accelerating 16 13A-60
The feeling of impact or vibration when decelerating 17 13A-60
Poor acceleration 18 13A-61
Surge 19 13A-63
Knocking 20 13A-64
Dieseling 21 13A-64
Too high CO and HC concentration when idling 22 13A-65
Low alternator output voltage (approx. 12.3 V) 23 13A-66
Idling speed is improper when A/C is operating 24 13A-66
Fans (radiator fan, A/C condenser fan) are inoperative 25 13A-67
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