Subaru Impreza 2003 Service Manual page 3258

CRUISE CONTROL SYSTEM (DIAGNOSTICS)
C: CHECK CRUISE CONTROL MAIN SWITCH
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 condition.
The main relay operation can be checked by hearing the operation sound.
This operation sound will be heard when the ignition switch and cruise control main switch is turned to ON.
WIRING DIAGRAM:
BATTERY
B161
1 2
1 2 3 4 5 6 7 8 9 10
3 4 5 6
11 12 13 14 15 16 17 18 19 20
DIAGNOSTIC PROCEDURE WITH SYMPTOM
SBF-4
CRUISE CONTROL
MAIN SWITCH
B161
B94 CRUISE CONTROL MODULE
B94
IGNITION
SWITCH
F/B No.18
CC-14
E
CC-00173