Subaru 2009 IMPREZA Service Manual page 3307

CRUISE CONTROL SYSTEM (DIAGNOSTICS)
F: 16
Detected when ignition switch is turned to OFF or malfunction related to the ignition switch occurs.
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:
BATTERY
Step
1 CHECK IGNITION SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the ECM harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B135) No. 19 (+) — Chassis ground (–):
G: 21
Cruise control command switch malfunction is detected.
TROUBLE SYMPTOM:
• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.
Refer to DTC 11 for diagnostic procedure.
<Ref. to CC(diag)-14, 11, Diagnostic Procedure with Cancel Code.>
Diagnostic Procedure with Cancel Code
IGNITION
SWITCH
MAIN SBF SBF-6
Is the voltage 10 V or more?
CC(diag)-22
F/B No.12
ECM
B135
Check
Check for poor
contact of ECM
connector.
B135
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17 18 19
25
20 21 22 23 24 26 27
28 29 30 31 32 33 34 35
CC-00485
Yes No
• Check fuse No.
12 (in fuse & relay
box).
• Check the har-
ness for open or
short circuit
between ignition
switch and ECM.