Subaru 2002 IMPREZA Service Manual page 497

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Yes
Repair or replace
the ATF tempera-
ture sensor circuit.
Repair poor con-
tact in TCM con-
nector.
Repair or replace
the automatic
transmission.
<Ref. to AT-1 2,
INSPECTION,
Road Test.>
Step
8
CHECK ATF TEMPERATURE SENSOR CIR-
CUIT.
Check ATF temperature sensor circuit. <Ref. to
SOR, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
Check poor contact in TCM connector.
AT-48, DTC
27
ATF TEMPERATURE SEN-
9 CHECK POOR CONTACT.
No
Go to step 9.
Go to step 10.
Replace the TCM.
<Ref. to AT-45,
Transmission Con-
trol Module
(TCM).>
Check mechanical trouble in automatic trans-
mission.
Check
Is there any trouble in ATF tem-
perature sensor circuit?
Is there poor contact in TCM
connector?
Is there any mechanical trouble
in automatic transmission?
EN(D0HC TURBO)-273