Mitsubishi LANCER EVOLUTION-IV 1998, Workshop Manual, Page: 244 / 526

MPI –
Troubleshooting
13-21
<EVOLUTION-V>
Descriptions other than those given below are the same as for the EVOLUTION-IV.
Item
No. Inspection
item Inspection contents Normal condition
12 Air flow
sensor*
1
D
Engine coolant temperature:
80 – 95
_
C
Engine is idling 12 – 38 Hz
sensor*
1
80 – 95
_
C
D
Lamps, electric cooling fan and
all accessories: OFF
2,500 r/min 36 – 76 Hz
all accessories: OFF
D
Transmission: Neutral
Engine is raced Frequency increases
in response to racing
41 Injector
drive time*
2
Engine: Cranking*
2 When engine coolant temper-
ature is 0
_
C
27 – 40 ms
When engine coolant temper-
ature is 20
_
C
14.5 – 21.7 ms
When engine coolant temper-
ature is 80
_
C
3.8 – 5.6 ms
Injector
drive time *
3
D
Engine coolant temperature:
80
95
_
C
Engine is idling 0.9 – 2.1 ms
drive time *
3
80 – 95
_
C
D
Lamps, electric cooling fan and
all accessories: OFF
2,500 r/min 0.7 – 1.9 ms
all accessories: OFF
D
Transmission: Neutral
When engine is suddenly
raced Increases
44 Ignition
advance
D
Engine: After having been
warmed up Engine is idling 0 – 13
_
BTDC
advance warmed up
D
Timing lamp is set.
2,500 r/min 24 – 44
_
BTDC
NOTE
*1: In a new vehicle (driven approximately 500 km or less), the air flow sensor output frequency is sometimes
10 % higher than the standard frequency.
*2: The injector drive time represents the time when the cranking speed is at 250 r/min or below when the power
supply voltage is 11 V.
*3: In a new vehicle (driven approximately 500 km or less), the injector drive time is sometimes 10 % longer than
the standard time.