Subaru B9 TRIBECA WX 2007 Manual page 285

asieps_tobira.book 18 ページ ２０１２年２月１０日 金曜日 午後３時２６分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Step
1 CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the stop light switch and brake
switch harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B65) No. 2 (+) — Chassis ground (–):
2 CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
Measure the voltage between harness connec-
tor terminal and chassis ground.
Connector & terminal
(B65) No. 4 (+) — Chassis ground (–):
3 CHECK STOP LIGHT SWITCH AND BRAKE
SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of ECM.
3) Measure the resistance between ECM har-
ness connector terminal and stop light switch
and brake switch harness connector terminal.
Connector & terminal
(B135) No. 28 — (B65) No. 3:
(B135) No. 20 — (B65) No. 1:
4 Check Stop Light Switch and Brake Switch
Remove and check the stop light switch and
brake switch. <Ref. to CC-6, Stop Light & Brake
Switch.>
Check
Is the voltage 10 V or more?
Is the voltage 10 V or more?
Is the resistance less than 10
Ω?
Are the stop light switch and
brake switch OK?
CC(diag)-18
Yes No
Go to step 2. • Check fuse No. 8
(in fuse & relay
box).
• Check for open
or short in the har-
ness between stop
light/brake switch
and fuse & relay
box.
Go to step 3. • Check fuse No. 4
(in fuse & relay
box).
• Check for open
or short in the har-
ness between stop
light/brake switch
and fuse & relay
box.
Go to step 4. Repair the har-
ness.
Replace the ECM. Replace the stop
<Ref. to light switch and
FU(H6DO)-33, brake switch.
Engine Control
Module (ECM).>