MPI <4G1> -
Troubleshooting
13A-17
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.
OK
Check the following connector:
B-34
NG
Repair
NG
Check the following connector:
B-34
NG
Repair
OK
Measure at engine-ECU connector
B-34.
D
Measure the voltage at the
engine-ECU terminal.
D
Ignition switch: ON
D
The voltage between terminal 84
and earth
OK:
Accelerator pedal fully re-
leased: 0.3 - 1.0 V
Accelerator pedal fully de-
pressed: 4.5 - 5.5 V
OK
Check the harness wire between
throttle position sensor and the
engine-ECU, and repair if necessary.
OK
Measure at throttle position sensor
connector A-05.
D
Use test harness (MB991536) to
connect the connector, and
measure at the pick-up harness.
D
Ignition switch: ON
(1) The voltage between terminal 1
and earth
OK:
4.8 - 5.2 V
(2) The voltage between terminal 4
and earth
OK:
0.5 V or less
(3) The voltage between terminal 2
and earth
OK:
Accelerator pedal fully re-
leased: 0.3 - 1.0 V
Accelerator pedal fully de-
pressed: 4.5 - 5.5 V
(1), (2) NG
NG
Repair
Check the following connector:
B-34
NG
Repair
OK
Check the harness wire between
throttle position sensor and the
engine-ECU.
From the previous page
(3) NG
Adjust the throttle position sensor.
(Refer to P.13A-84*.)
OK
Check the harness wire between
throttle position sensor and the
engine-ECU, and repair if necessary.
Check the following connector:
B-34
NOTE:
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).