Subaru IMPREZA GD 2007 Series Manual page 2664

asieps_tobira_IM_US.book 25 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Step
1 CHECK BATTERY TERMINAL.
Turn the ignition switch to OFF.
2 CHECK POWER SUPPLY OF TCM.
1) Disconnect the connector from TCM.
2) Turn the ignition switch to ON.
3) Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
(B54) No. 25 (+) — Chassis ground (–):
(B54) No. 26 (+) — Chassis ground (–):
(B54) No. 27 (+) — Chassis ground (–):
3 CHECK FUSE (NO. 4).
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 4).
4 CHECK IGNITION POWER SUPPLY CIR-
CUIT.
1) Turn the ignition switch to ON.
2) Measure the ignition power supply voltage
between TCM connector and chassis ground.
Connector & terminal
(B54) No. 1 (+) — Chassis ground (–):
(B54) No. 2 (+) — Chassis ground (–):
5 CHECK FUSE (NO. 11).
Remove the fuse (No. 11).
6 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance of harness between
TCM and transmission connector.
Connector & terminal
(B54) No. 22 — (B11) No. 19:
(B54) No. 23 — (B11) No. 19:
(B54) No. 20 — (B11) No. 20:
(B54) No. 21 — (B11) No. 20:
7 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND TRANSMISSION
GROUND.
Measure the resistance of the harness between
transmission and transmission ground.
Connector & terminal
(T4) No. 19 — Transmission ground:
(T4) No. 20 — Transmission ground:
AT Oil Temp Warning Light Display
Is there poor contact at the bat-
tery terminal?
Is the voltage 10 — 13 V?
Is the fuse (No. 4) blown out?
Is the voltage 10 — 13 V?
Is the fuse (No. 11) blown out? Replace the fuse
Is the resistance less than 1 Ω? Go to step 7.
Is the resistance less than 1 Ω? Repair the poor
4AT(D)(diag)-25
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check Yes
Repair the poor
contact.
Go to step 4.
Replace the fuse
(No. 4). If the new
fuse (No. 4) has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
4) and TCM.
Go to step 6.
(No. 11). If the new
fuse (No. 11) has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
11) and TCM.
contact.
No
Go to step 2.
Go to step 3.
Repair the open
circuit of harness
between fuse (No.
4) and TCM, or
fuse (No. 4) and
battery, and poor
contact of the con-
nector.
Go to step 5.
Repair the open
circuit of harness
between fuse (No.
4) and TCM, or
fuse (No. 4) and
battery, and poor
contact of the con-
nector.
Repair the open
circuit of harness
between TCM and
transmission har-
ness connector,
and poor contact of
connector.
Repair the open
circuit of the har-
ness between
transmission and
transmission
ground.