Subaru 2002 IMPREZA Service Manual page 1622

DIAGNOSTIC PROCEDURE FOR POWER INDICATOR LIGHT
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
9 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND TRANSMISSION
GROUND.
Measure the resistance of harness between
transmission and transmission ground.
Connector & terminal
(T4) No. 16 — Transmission ground:
10 CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in control
Check
Is the resistance less than 1
Ω?
module power supply, ground
line and data link connector?
AT-36
Yes
Go to step 10. Repair the open
circuit in harness
between transmis-
sion and transmis-
sion ground.
Repair the con- Replace the TCM.
nector. <Ref. to AT-46,
Transmission Con-
trol Module
(TCM).>
No