MPI <4G1> -
Troubleshooting
13A-39
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom
Inspection
procedure
No.
Reference page
Communication
Communication with all systems is not possible.
1
13A-40
with MUT-
II
is
impossible.
Communication with engine-ECU only is not possible.
2
13A-40
Engine warning
lamp and
The engine warning lamp does not illuminate right after the
ignition switch is turned to the ON position.
3
13A-41
related parts
The engine warning lamp remains illuminating and never goes
out.
4
13A-41
Starting
No initial combustion (starting impossible)
5
13A-42
Initial combustion but no complete combustion
(starting impossible)
6
13A-43
Long time to start (improper starting)
7
13A-44
Idling stability
Unstable idling (Rough idling, hunting)
8
13A-45
(Improper idling)
Idling speed is high. (Improper idling speed)
9
13A-47
Idling speed is low. (Improper idling speed)
10
13A-47
Idling stability
When the engine is cold, it stalls at idling. (Die out)
11
13A-48
(Engine stalls)
When the engine becomes hot, it stalls at idling. (Die out)
12
13A-49
The engine stalls when starting the car. (Pass out)
13
13A-51
The engine stalls when decelerating.
14
13A-51
Driving
Hesitation, sag or stumble
15
13A-52
The feeling of impact or vibration when accelerating
16
13A-53
The feeling of impact or vibration when decelerating
17
13A-53
Poor acceleration
18
13A-54
Surge
19
13A-55
Knocking
20
13A-56
Dieseling
21
13A-56
Too high CO and HC concentration when idling
22
13A-57
Fans (radiator fan, A/C condenser fan) are inoperative
23
13A-58