MPI <4G9> -
Troubleshooting
13A-164
Caution
If the terminals that should be checked are mistaken,
or if connector terminals are not correctly shorted
to earth, damage may be caused to the vehicle wiring,
sensors, engine-ECU <M/T> or engine-A/T-ECU <A/T>
and/or ohmmeter.
Be careful to prevent this!
4. If the ohmmeter shows any deviation from the standard
value, check the corresponding sensor, actuator and
related electrical wiring, and then repair or replace.
5. After repair or replacement, recheck with the ohmmeter
to confirm that the repair or replacement has corrected
the problem.
Engine-ECU <M/T> Harness Side
Connector Terminal Arrangement
Engine-A/T-ECU <A/T> Harness Side
Connector Terminal Arrangement
Terminal
No.<M/T>
Terminal
No. <A/T>
Inspection item
Normal condition (Check condition)
1 - 12
1 - 41
No. 1 injector
13 - 16
W
(At 20
_
C)
14 - 12
9 - 41
No. 2 injector
2 - 12
24 - 41
No. 3 injector
15 - 12
2 - 41
No. 4 injector
4 - 12
14 - 41
Stepper motor coil (A)
28 - 33
W
(At 20
_
C)
17 - 12
28 - 41
Stepper motor coil (B)
5 - 12
15 - 41
Stepper motor coil (C)
18 - 12
29 - 41
Stepper motor coil (D)
6 - 12
6 - 41
EGR control solenoid valve
29 - 35
W
(At 20
_
C)
9 - 12
34 - 41
Purge control solenoid valve
29 - 35
W
(At 20
_
C)
13 - Body
earth
42 - Body
earth
Engine-ECU <M/T> or engine-A/T-ECU
<A/T> earth
Continuity (0
W
)
26 - Body
earth
48 - Body
earth
Engine-ECU <M/T> or engine-A/T-ECU
<A/T> earth
60 - 12
3 - 41
Oxygen sensor (front) heater
4.5 - 8.0
W
(At 20
_
C)
54 - 12
26 - 41
Oxygen sensor (rear) heater
11 - 18
W
(At 20
_
C)
