Subaru Legacy 2002 Service Manual page 3322

DIAGNOSTICS CHART WITH SYMPTOM
Cruise Control System (Diagnostics)
C: CHECK CRUISE CONTROL MAIN SWITCH
S003619F24
TROUBLE SYMPTOM:
Cruise control main switch is not turned ON and cruise control cannot be set.
NOTE:
When the main relay (built-in cruise control module) operates, the main switch circuit is in normal condi-
tion.
The main relay operation can be checked by hearing the operation sounds.
This operation sounds will be heard when ignition switch and cruise control main switch is turned to ON.
CC-15