Subaru Impreza 2003 Service Manual page 1762

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
9 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1)Move the select lever to "N" range with throt-
tle fully closed (vehicle speed 0 km/h or 0
MPH).
2)Read the data of transfer duty solenoid using
Subaru Select Monitor.
•Transfer duty solenoid is indicated in "%".
10 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1)Connect the connectors to TCM and trans-
mission.
2)Connect the Subaru Select Monitor to data
link connector.
3)Turn the ignition switch to ON (engine OFF)
and turn Subaru Select Monitor switch to ON.
4)Move the select lever to "D" range with throt-
tle fully open (vehicle speed 0 km/h or 0 MPH).
5)Read the data of transfer duty solenoid using
Subaru Select Monitor.
•Transfer duty solenoid is indicated in "%".
11 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1)Move the select lever to "N" range with throt-
tle fully close (vehicle speed 0 km/h or 0 MPH).
2)Read the data of transfer duty solenoid using
Subaru Select Monitor.
•Transfer duty solenoid is indicated in "%".
12 CHECK POOR CONTACT.
Check
Is the value approx. 60 — 70
%?
Is the value 80 — 95 %?
Is the value approx. 40 %?
Is there poor contact in transfer
duty solenoid circuit?
4AT-92
Yes
Even if the Go to step 12.
POWER indicator
lights up, the cir-
cuit has returned
to a normal condi-
tion at this time. A
temporary poor
contact of the con-
nector or harness
may be the cause.
Repair the har-
ness or connector
in TCM and trans-
mission.
Go to step 11. Go to step 12.
Even if the Go to step 12.
POWER indicator
light up, the circuit
has returned to a
normal condition
at this time. A tem-
porary poor con-
tact of the
connector or har-
ness may be the
cause. Repair the
harness or con-
nector in transfer
duty solenoid and
TCM connector.
Repair the poor Replace the TCM.
contact. <Ref. to 4AT-70,
Transmission Con-
trol Module
(TCM).>
No