Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 222

INSPECTION PROCEDURE 19
Vehicle speed sensor system
The cause is probably a defective vehicle speed sensor circuit or a defective
engine-A/T-ECU or A/T-ECU.
Check the vehicle speed sensor.
(Refer to GROUP 54 - Combination Meters.)*
Measure at the vehicle speed sensor connector A-85.
D Disconnect the connector, and measure at the harness side.
(1) Voltage between 1 and earth (Ignition switch: ON)
OK: System voltage
(2) Voltage between 3 and earth (Ignition switch: ON)
OK: 4.8 - 5.2 V
(3) Continuity between 2 and earth
OK: Continuity
OK
NG
Check the following
connector:
A-85
OK
Check trouble symptom.
NG
NG
Check the harness wire
between the engine-
A/T-ECU or A/T-ECU and
the vehicle speed sensor
connector.
OK
Replace the engine-A/T-ECU or A/T-ECU.
NOTE
*: Refer to '99 SPACE RUNNER/SPACE WAGON Workshop Manual (Pub. No. PWDE9803).
AUTOMATIC TRANSMISSION -
OK
Repair
Repair
Troubleshooting
Probable cause
D Malfunction of the vehicle speed sensor
D Malfunction of connector
D Malfunction of the engine-A/T-ECU <4G6-MPI>
D Malfunction of the A/T-ECU <4G6-GDI>
NG
Replace
(1) NG
Check the following
connectors:
(2) NG
A-81, B-14, B-91, B-89
OK
(3) NG
Check trouble symptom.
NG
Check the harness wire
between the
speed sensor and ignition
switch connector.
OK
Check the ignition switch. (Refer to GROUP 54 - Ignition switch.)*
Check the following
connectors:
<4G6-MPI> B-10, A-81
<4G6-GDI> B-111, A-81
OK
Check trouble symptom.
NG
Check the harness wire
between the engine-
A/T-ECU or A/T-ECU and
the vehicle speed sensor
connector.
OK
Replace the engine-A/T-ECU or A/T-ECU.
Check the following
connectors:
A-81
OK
Check trouble symptom.
NG
Check the harness wire between the vehicle speed sensor and
the earth, and repair if necessary.
NG
Repair
NG
Repair
vehicle
NG
Repair
NG
Repair
NG
Repair
23-15