Subaru Forester 2004 - Page 548

CC(H4SO)-16
CRUISE CONTROL SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Symptom
Step Check Yes No
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
With indicator built in combination
meter:
(B161) No. 3 (+) — Chassis ground (
− ):
With indicator built in main switch:
(B161) No. 2 (+) — Chassis ground ( − ):
Is the voltage more than 10 V? Go to step 2. • 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.
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
control module harness connector terminal
and cruise control main switch harness con-
nector terminal.
Connector & terminal
With indicator built in combination
meter:
(B94) No. 15 — (B161) No. 5:
With indicator built in main switch:
(B94) No. 15 — (B161) No. 1:
Is the resistance less than 10
Ω?
Go to step 3. Repair the har-
ness.
3 CHECK CRUISE CONTROL MAIN SWITCH.
Remove and check the cruise control main
switch. <Ref. to CC-8, Cruise Control Main
Switch.>
Is the cruise control main
switch OK?
Replace the cruise
control module.
Replace the cruise
control main
switch.