Subaru Legacy 2005 Service Manual page 2447

Diagnostic Procedure for Subaru Select Monitor Communication
Step
9 CHECK INSTALLATION OF TCM CONNEC-
TOR.
Turn the ignition switch to OFF.
10 CHECK INSTALLATION OF TRANSMISSION
HARNESS CONNECTOR.
11 CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in control
12 CHECK POWER SUPPLY OF TCM.
1) Disconnect the connector from TCM.
2) Turn the ignition switch to ON.
3) Measure the voltage between TCM con-
nector and chassis ground.
Connector & terminal
(B54) No. 1 (+) — Chassis ground (
13 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse M/B (No. 12).
14 CHECK HARNESS.
Measure the resistance between TCM connec-
tor and chassis ground.
Connector & terminal
(B54) No. 1 — Chassis ground:
15 CHECK IGNITION POWER SUPPLY CIR-
CUIT.
1) Turn the ignition switch to ON (engine
OFF).
2) Measure the ignition power supply voltage
between TCM connector and chassis ground.
Connector & terminal
(B55) No. 1 (+) — Chassis ground (
(B55) No. 10 (+) — Chassis ground (
16 CHECK FUSE.
Remove the fuse F/B (No. 12).
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is TCM connector connected
to TCM?
Is the transmission harness
connector connected to bulk-
head harness connector?
module power supply and data
link connector?
Is the voltage 10 — 13 V?
−
):
Is the fuse M/B (No. 12) blown
out?
Is the resistance less than 10
Ω?
Is the voltage 10 — 13 V?
−
):
−
):
Is the fuse F/B (No. 12) blown
out?
5AT(diag)-29
Yes
Go to step 10. Connect the TCM
connector to TCM.
Go to step 11. Connect the bulk-
head harness con-
nector to
transmission har-
ness connector.
Repair the poor Go to step 12.
contact.
Go to step 15. Go to step 13.
Go to step 14. Repair the open
circuit of harness
between fuse M/B
(No. 12) and TCM,
or fuse M/B (No.
12) and battery,
and poor contact
in connector.
Replace the fuse Replace the fuse
M/B (No. 12). If the M/B (No. 12).
replaced fuse M/B
(No. 12) has blown
out easily, repair
the short circuit of
harness between
fuse M/B (No. 12)
and TCM.
Go to step 17. Go to step 16.
Replace the fuse Repair the open
F/B (No. 12). If the
circuit of harness
replaced fuse F/B between fuse F/B
(No. 12) has blown (No. 12) and TCM,
out easily, repair or fuse F/B (No.
the short circuit of 12) and battery,
harness between and poor contact
fuse F/B (No. 12) in connector.
and TCM.
No