Subaru Legacy 2002 Service Manual page 1887

DIAGNOSTIC PROCEDURE FOR NO-DIAGNOSTIC TROUBLE CODE (DTC)
Automatic Transmission (Diagnostics)
No.
10 CHECK INPUT SIGNAL FOR TCM.
Measure signal voltage for TCM while turning
power switch ON.
Connector & terminal
(B55) No. 23 (+) — Chassis ground (–):
11 CHECK POOR CONTACT.
Step
Is the voltage less than 1
V?
Is there poor contact?
AT-118
Check Yes
Go to step 11.
Repair poor con-
tact.
No
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>
A temporary poor
contact of the
connector or har-
ness in power
switch circuit.