Subaru LEGACY 2006 Manual page 3427

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
7 CHECK TRANSMISSION HARNESS.
1) Lift up the vehicle and place it on rigid
racks.
2) Drain the automatic transmission fluid.
CAUTION:
Do not drain ATF until it cools down.
3) Remove the oil pan.
4) Disconnect the harness connector from
control valve.
5) Measure the resistance between ATF tem-
perature sensor connector terminals.
6) Measure the resistance between transmis-
sion connector and transmission ground.
Connector & terminal
(T4) No. 11 — Transmission ground:
8 CHECK TRANSMISSION HARNESS.
Measure the resistance between transmission
connector and transmission ground.
Connector & terminal
(T4) No. 15 — Transmission ground:
9 CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between control valve
connector terminals.
Terminal
No. 1 — No. 3:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the resistance more than
500 Ω?
4AT(diag)-41
Yes No
Go to step 8. Replace the trans-
mission harness.
Go to step 9. Replace the trans-
mission harness.
Even if the SPORT Replace the con-
indicator light is trol valve body.
blinking, the cir- <Ref. to 4AT-57,
cuit is in normal Control Valve
condition at this Body.>
time. A temporary
short circuit of
connector or har-
ness may be the
cause. Repair the
harness or con-
nector.