MPI <4G1> -
Troubleshooting
13A-69
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
81
Long-term
fuel com-
pensation
Engine: Warm, 2,500 r/min without any load
(during closed loop)
-12.5 - 12.5 %
Code No.
P0170
13A-25
82
Short-term
fuel com-
pensation
Engine: Warm, 2,500 r/min without any load
(during closed loop)
-17 - 17 %
Code No.
P0170
13A-25
87
Calculation
Engine: Warm
Engine: Idling
20 - 33 %
-
-
load value
2,500 r/min
20 - 33 %
88
Fuel control
Engine: Warm
2,500 r/min
Closed loop
Code No.
13A-18
condition
When engine is
suddenly raced
Open loop - drive
condition
P0125
A1
Oxygen
sensor
(front)
Engine: After having
warmed up
Air/fuel mixture is
made leaner when
When at 4,000
r/min, engine is
suddenly deceler-
ated
0.2 V or less
Code No.
P0130
13A-19
decelerating, and is
made richer when
racing.
When engine is
sudden racing
0.6 - 1.0 V
Engine: After having
warmed up
The oxygen sensor
signal is used to
Engine is idling
0.4 V or less
(Changes)
0.6 - 1.0 V
check the air/fuel
mixture ratio, and
control condition is
also checked by the
engine-ECU.
2,500 r/min
A2
Oxygen
sensor
(rear)
D
Transmission:
2nd gear
D
Drive with throttle
widely open
3,500 r/min
0.6 - 1.0 V
Code No.
P0136
13A-22
8A
Throttle
D
Ignition switch: ON Set to idle position
6 - 20 %
Code No.
13A-16
position
sensor
(Throttle
opening
angle)
Gradually open
Increase in
proportion to
throttle opening
angle
P0120
Open fully
80 - 100 %