Mitsubishi 3000GT Service Manual page 469

ENGINE AND EMISSION CONTROL - Cruise Control System
Check input. (Refer to P.l7-26.)
Is the result of input check O.K.?
No
Result of check
None of the codes appear even if input
operations are performed.
Even when SET switch is set to OFF, SET switch ON malfunc- Replace the control P.l7-13
code No. 21 does not go away.
Even when RESUME switch is set to RESUME switch ON Replace control switch
OFF, code No. 22 does not go away.
Even when CANCEL switch is set to CANCEL switch ON Replace control switch.
OFF, code No. 27 does not go away.
Even when brake pedal is depressed,
code No. 23 is not,displayed.
Even when brake pedal is released, code
No. 23 does not go away.
Even when clutch pedal is released,
code No. 26 does not go away. eMiT>
Even when select lever is placed in any
position other than "N" and "P", code No.
26 does not go away. cA!T>
Code No. 25 is not displayed even when
vehicle speed is less than about 40 km/h
(25 mph).
Even when vehicle speed is increased to
more than about 40 km/h (25 mph), code
No. 25 does not go away.
Code No. 24 is not displayed, either.
NOTE
This chart contains troubleshooting procedures to
perform when a problem cannot be detected by on-
board diagnostic.
Check vacuum pump assembly circuit.
NOTE
If the results of checks on the vacuum pump assembly
circuit and actuator parts (refer to F!17-37.) indicate
that they are good, replace the control unit.
Probable cause
Open circuit in control
unit power supply circuit.
Open circuit in control Replace control switch P.17-13
switch circuit
Defective control unit
tion
malfunction
malfunction
Defective
stop light Replace stop light switch P.17-19
switch circuit
Defective clutch pedal Replace clutch pedal P.17-19
position switch circuit
park/neutral
Defective
position switch circuit
Defective vehicle speed
sensor circuit
TSB Revision
Remedy Reference page
Replace main switch or P.17-12
repair harness.
or repair harness.
Replace control unit.
switch.
or repair harness.
position switch or repair
harness.
Replace
park/neutral P.17-20
position switch or repair
harness.
Check and repair vehicle
speed sensor circuit.
17-9