Mitsubishi MOTORS Space Runner 1998, Workshop Manual

Page: 495 / 1164

AUTOMATIC TRANSMISSION -
Troubleshooting
23-35
INSPECTION PROCEDURE 17
Inhibitor switch system Probable cause
The cause is probably a malfunction of the inhibitor switch circuit, ignition switch
circuit or a defective A/T
-
ECU.
D Malfunction of the inhibitor switch
D Malfunction of the ignition switch
D Malfunction of connector
D Malfunction of the A/T-ECU
Inhibitor switch check (Refer to P.23-48.)
NG
Replace
OK
Check the voltage of the inhibitor switch
connector A-89.
D Disconnect the connector and
measure at the harness side.
D Voltage between terminal No. 8 and
earth
OK:
Battery voltage
NG
Check the following connectors:
B-14, B-93, B-89
NG
Repair
OK
Harness check
D Between inhibitor switch and
ignition switch
NG
Repair
OK
Check the trouble symptoms.
NG
Ignition switch check
(Refer to GROUP54 - Ignition Switch.)
OK
Check the following connectors:
A-89, B-10
NG
Repair
OK
Harness check
D Between inhibitor switch and
A/T-ECU connector
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the A/T-ECU.
INSPECTION PROCEDURE 18
Dual pressure switch system Probable cause
The cause is probably a defective dual pressure switch circuit or a defective A/T-ECU. D Malfunction of the dual pressure switch
D Malfunction of connector
D Malfunction of A/C system
D Malfunction of the A/T-ECU
Dual pressure switch check (Refer to
GROUP 55 - On-vehicle service.)
NG
Replace
OK
Check the voltage of the A/T-ECU con-
nector B-12.
D Disconnect the connector and
check at the harness side.
D Ignition switch: ON
D A/C switch: ON
D Voltage between terminal No. 10
and earth
OK:
Battery voltage
OK
Check the following connectors:
B-12, A-28
NG
Repair
OK
Check the trouble symptoms.
NG
NG
Check the A/C system. (Refer to
GROUP 55 - Troubleshooting.)
Repair
OK
Replace the A/T-ECU.
NG
Replace the A/T-ECU.