Subaru Legacy 2002 Service Manual page 3338

DIAGNOSTICS CHART WITH TROUBLE CODE
No.
6 CHECK HARNESS BETWEEN CRUISE
CONTROL MODULE AND TRANSMISSION
CONTROL 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 trans-
mission control module harness connector
terminal.
CAUTION:
To measure the voltage and/or resistance,
use a tapered pin with a diameter of less
than 0.64 mm (0.025 in). Do not insert the
pin more than 2 mm (0.08 in).
Connector & terminal
(B94) No. 19 — (B56) No. 17:
7 CHECK TRANSMISSION CONTROL MOD-
ULE.
1) Connect harness connector to transmission
control module.
2) Lift-up the vehicle and support with safety
stands.
WARNING:
Be careful not to be caught by the running
wheels.
3) Drive the vehicle faster than 10 km/h (6
MPH).
4) Measure voltage between transmission
control module harness connector terminal
and chassis ground.
CAUTION:
To measure the voltage and/or resistance,
use a tapered pin with a diameter of less
than 0.64 mm (0.025 in). Do not insert the
pin more than 2 mm (0.08 in).
Connector & terminal
(B56) No. 17 (+) — Chassis ground (−):
Step
Is the resistance less than
10 Ω?
Is the voltage less than 1 V
←→ more than 4 V?
CC-31
Cruise Control System (Diagnostics)
Check Yes
Go to step 7.
Replace cruise
control module.
<Ref. to CC-6,
Cruise Control
Module.>
No
Repair harness.
Replace transmis-
sion control mod-
ule. <Ref. to
AT-49, Transmis-
sion Control Mod-
ule (TCM).>