Subaru Impreza 2003 Service Manual page 3259

Step
1 CHECK CRUISE CONTROL MAIN SWITCH
CIRCUIT.
1)Turn the ignition switch to OFF.
2)Disconnect the cruise control main switch
harness connector.
3)Turn the ignition switch to ON.
4)Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B161) No. 3 (+) — Chassis ground ( − − − − ):
2 CHECK CRUISE CONTROL MAIN SWITCH
CIRCUIT.
1)Turn the ignition switch OFF.
2)Disconnect the cruise control module har-
ness connector.
3)Measure the resistance between cruise con-
trol module harness connector terminal and
cruise control main switch harness connector
terminal.
Connector & terminal
(B94) No. 15 — (B161) No. 5:
(B94) No. 1 — (B161) No. 6:
(B94) No. 11 — (B161) No. 1:
3 CHECK CRUISE CONTROL MAIN SWITCH.
Remove and check the cruise control main
switch. <Ref. to CC-5, Cruise Control Main
Switch.>
DIAGNOSTIC PROCEDURE WITH SYMPTOM
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Check
Is the voltage more than 10 V? Go to step 2.
Is the resistance less than 10
Ω?
Is the cruise control main
switch OK?
CC-15
Yes
• Check the fuse
No. 18 (in fuse &
relay box).
• Check the har-
ness for open or
short between
cruise control main
switch and fuse &
relay box.
Go to step 3. Repair the har-
ness.
Replace the cruise Replace the cruise
control module. control main
switch.
No