Subaru Legacy 2003 Service Manual page 4019

CRUISE CONTROL SYSTEM (DIAGNOSTICS)
6 CHECK HARNESS BETWEEN CRUISE CON-
TROL MODULE AND TRANSMISSION CON-
TROL MODULE.
1) Turn ignition switch to OFF.
2) Disconnect harness connector from trans-
mission control module and cruise control
module.
3) Measure resistance between cruise control
module harness connector terminal and
transmission control module harness con-
nector terminal.
Connector & terminal
(B94) No. 19 — (B56) No. 17:
Is the measured value less than the speci-
fied value?
7 CHECK TRANSMISSION CONTROL MOD-
ULE.
1) Connect harness connector to transmission
control module.
2) Lift-up the vehicle and support with safety
stands.
3) Drive the vehicle faster than 10 km/h (6
MPH).
Warning:
Be careful not to be caught by the running
wheels.
4) Measure voltage between transmission
control module harness connector terminal
and chassis ground.
Connector & terminal
(B56) No. 17 (+) — Chassis ground ( − − − − ):
Is the measured value same as the speci-
fied value?
DIAGNOSTICS CHART WITH TROUBLE CODE
Step Value
10 Ω?
0 ←→ 5 V
CC-30
Yes
Go to step 7. Repair harness.
Replace cruise Replace transmis-
control module. sion control mod-
<Ref. to CC-6, ule. <Ref. to AT-
Cruise Control 76, Transmission
Module.> Control Module
(TCM).>
No