Mitsubishi Lancer Evolution-IV - Page 62

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
a
ll
accessor
i
es:
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
d
r
i
ve
ti
me
*
3
80
–
95_C
D Lamps, electric cooling fan and
all accessories: OFF
2,500 r/min 0.7 – 1.9 ms
a
ll
accessor
i
es:
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.