MPI <4G6> -
Troubleshooting
13A-75
DATA LIST REFERENCE TABLE
Caution
When shifting the select lever to D range, the brakes should be applied so that the vehicle does
not move forward.
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 idle position switch normally turns off when the voltage of the throttle position sensor is 50 -
100 mV higher than the voltage at the idle position. If the throttle position switch turns back on
after the throttle position sensor voltage has risen by 100 mV and the throttle valve has opened,
the idle position switch and the throttle position sensor need to be adjusted.
*3. 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.
*4. In a new vehicle [driven approximately 500 km or less], the injector drive time is sometimes 10 %
longer than the standard time.
*5. In a new vehicle [driven approximately 500 km or less], the step of the stepper motor is sometimes
30 steps greater than the standard value.
Item
No.
Inspection
item
Inspection contents Normal condition Inspection
procedure
No.
Reference
page
11 Oxygen
sensor
(front)
Engine: After having
warmed up
Air/fuel mixture is
When at 4,000 r/min,
engine is suddenly
decelerated
200 mV or less Code No.
P0130
13A-21
made leaner when de-
celerating, and is made
richer when racing.
When engine is sud-
denly raced
600 - 1,000 mV
Engine: After having
warmed up
The oxygen sensor
signal is used to check
Engine is idling 400 mV or less
(Changes)
600 - 1,000 mV
signal is used to check
the air/fuel mixture
ratio, and control con-
dition is also checked
by the ECU.
2,500 r/min
12 Air flow sen-
sor*
1
D
Engine coolant
temperature:
Engine is idling 17 - 43 Hz
(1.0 – 4.0 g/s)
- -
80 - 95
_
C
D
Lamps, electric
cooling fan and all
2,500 r/min 70 - 110 Hz
(5.0 – 10.0 g/s)
accessories: OFF
D
Transmission:
Neutral
(A/T: P range)
Engine is raced Frequency in-
creases in re-
sponse to racing
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