MPI <4G9> -
Troubleshooting
13A-163
Terminal
No. <M/T>
Normal condition
Check condition (Engine condition)
Check item
Terminal
No. <A/T>
84
78
Throttle
position
Ignition switch:
ON
Set throttle valve
to idle position
0.3 - 1.0 V
sensor
Fully open throttle
valve
4.5 - 5.5 V
85
55
Barometric
pressure
Ignition switch:
ON
When altitude is
0 m
3.7 - 4.3 V
sensor
When altitude is
1,200 m
3.2 - 3.8 V
86
80
Vehicle
speed sensor
D
Ignition switch: ON
D
Move the vehicle slowly forward
0
«
5 V
(Changes repeatedly)
88
56
Camshaft
Engine: Cranking
0.4 - 3.0 V
position
sensor
Engine: Idle speed
0.5 - 2.0 V
89
45
Crank angle
Engine: Cranking
0.4 - 4.0 V
sensor
Engine: Idle speed
1.5 - 2.5 V
90
65
Air flow sen-
Engine: Idle speed
2.2 - 3.2 V
sor
Engine r/min: 2,500 r/min
CHECK CHART FOR RESISTANCE AND CONTINUITY
BETWEEN TERMINALS
1. Turn the ignition switch to “LOCK” (OFF) position.
2. Disconnect the engine-ECU <M/T> or engine-A/T-ECU
<A/T> connector.
3. Measure the resistance and check for continuity between
the
terminals
of
the
engine-ECU
<M/T>
or
engine-A/T-ECU <A/T> harness-side connector while
referring to the check chart.
NOTE
(1) When measuring resistance and checking continuity,
a harness for checking contact pin pressure should
be used instead of inserting a test probe.
(2) Checking need not be carried out in the order given
in the chart.
