Mitsubishi 1989-1993 GALANT Service Manual page 478

AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
The set vehicle speed varies
l
greatly upward or downward.
"Hunching" (repeated alternating
l
acceleration and deceleration) oc-
curs after setting is made.
The auto-cruise control system is not
canceled when the brake pedals is
depressed.
ransaxle)
It is canceled, however, when the
noved to the "N" position. (vehicles
vith an automatic transaxle)
Probable cause
Malfunction of the ve-
Malfunction of the spee-
dometer cable or spee-
dometer drive gear
Actuator circuit poor
contact
Malfunction of the ac-
tuator
Malfunction of the ECU
Damaged or discon-
light switch input circuit;
brake switch (for auto-
cruise control) malfunc-
tion (short-circuit)
Actuator drive circuit
short-circuit.
Malfunction of the ECU
Damaged or discon-
pedal position switch
input circuit
Clutch pedal position
switch improper installa-
tion (won't switch ON)
Malfunction of the ECU
Damaged or discon-
neutral position switch
input circuit
Improper adjustment of
park/neutral position
switch
Malfunction of the ECU
TSB Revision
Repair the vehicle speec
sensor system, or re-
place the part.
Repair the actuator sys-
Replace the ECU.
If the input check code Repair the harness or re
place the stop light
switch.
function. No.6-1
Repair the harness or re
place the actuator.
Replace the ECU.
If the input check code Repair the harness, or
repair or replace the
function. No.6-3 clutch pedal position
switch.
Replace the ECU.
If the input check code Repair the harness, or
repair or replace the
function. No.6-2 park/neutral position
switch.
Replace the ECU.