Subaru Legacy 2002 Service Manual page 1864

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
2 CHECK HARNESS CONNECTOR
BETWEEN TCM AND TRANSMISSION.
Measure resistance harness connector
between TCM and chassis ground.
Connector & terminal
(B54) No. 6 — Chassis ground:
3 CHECK TRANSFER DUTY SOLENOID.
Measure resistance between transmission
connector and transmission terminals.
Connector & terminal
(T4) No. 6 — No. 16:
4 PREPARE SUBARU SELECT MONITOR.
5 CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
1) Connect connectors to TCM and transmis-
sion.
2) Turn ignition switch to ON (engine OFF).
3) Throttle is fully closed.
4) Measure voltage between TCM connector
and chassis ground.
Connector & terminal
(B54) No. 6 (+) — Chassis ground (−):
6 CHECK OUTPUT SIGNAL EMITTED FROM
TCM.
Measure voltage between TCM connector and
chassis ground.
Connector & terminal
(B54) No. 6 (+) — Chassis ground (−):
7 CHECK VDC SYSTEM.
8 CHECK OUTPUT SIGNAL EMITTED FROM
TCM USING SUBARU SELECT MONITOR.
1) Connect connectors to TCM and transmis-
sion.
2) Connect Subaru Select Monitor to data link
connector.
3) Turn ignition switch to ON (engine OFF)
and turn Subaru Select Monitor switch to ON.
4) Move select lever to "D" with throttle fully
open (vehicle speed 0 km/h or 0 MPH).
5) Read data of transfer duty solenoid using
Subaru Select Monitor.
¼ Transfer duty solenoid is indicated in "%".
Step
Is the resistance more than
1 MΩ?
Is the resistance between
10 and 17 Ω?
Do you have a Subaru
Select Monitor?
Is the voltage less than 1 V
in "P" range?
Is the voltage between 5
and 7 V in "D" range?
Is the vehicle equipped
with the VDC system?
Is the value between 5 and
10%?
AT-95
Automatic Transmission (Diagnostics)
Check Yes
Go to step 3.
Go to step 4.
Go to step 7.
Go to step 9.
Even if "POWER"
indicator lights up,
the circuit has
returned to a nor-
mal condition at
this time. A tem-
porary poor con-
tact of the con-
nector or harness
may be the
cause. Repair
harness or con-
nector in the
transfer duty sole-
noid and TCM
connector.
Go to step 10.
Go to step 9.
No
Repair short cir-
cuit in harness
between TCM and
transmission con-
nector.
Go to step 13.
Go to step 5.
Go to step 12.
Go to step 12.
Go to step 8.
Go to step 12.