Subaru Legacy IV (2008 year). Service manual — part 1106

SE-36

Power Seat System

SEATS

9. FAILS TO STORE THE LOCATION TO THE MEMORY (DRIVER’S SEAT, WITH MEMORY)

Step

Check

Yes

No

1

CHECK SWITCH.
1) Disconnect the harness connector of mem-
ory switch assembly.
2) Check memory switch. <Ref. to SE-28,
CHECK MEMORY SWITCH (MEMORY-
EQUIPPED), INSPECTION, Power Seat Sys-
tem.>

Is there any problem on the
inspection result?

Go to step 2.

Replace the mem-
ory switch assem-
bly.

2

CHECK HARNESS.
Measure the resistance between the memory
switch connector and memory module connec-
tor.

Connector & terminal

(R195) No. 13 — (R198) No. 3:
(R195) No. 14 — (R198) No. 2:
(R195) No. 15 — (R198) No. 8:

Is the resistance less than 10

:? Go to step 3.

Check power seat
harness.

3

CHECK COMBINATION METER.
Turn the ignition switch to ON and check the
indicator inside the meter while the selector
lever is in P position.

Does the indicator display P?

Go to step 4.

Check the combi-
nation meter. <Ref.
to IDI-5, INSPEC-
TION, Combina-
tion Meter
System.>

4

SYSTEM INITIALIZATION.
Initialize memory seat system. <Ref. to SE-40,
ADJUSTMENT, Power Seat System.>

Is the initialization completed
successfully?

Replace the mem-
ory module.

<Ref. to SE-38,
INITIALIZATION IS
IMPOSSIBLE,
INSPECTION,
Power Seat Sys-
tem.>

SE-37

Power Seat System

SEATS

10.FAILS TO PERFORM THE REPLAY OPERATION (DRIVER’S SEAT, WITH MEMORY)

Step

Check

Yes

No

1

CHECK MEMORY FUNCTION.
Perform the memory operation of the seat posi-
tion, and check the memory replay operation.

Does the seat position memory
replay correctly?

Memory function is
normal. Memory
seems to be
cleared since volt-
age was less from
the operation-
ensured voltage
temporary at the
time of memory
restoring and man-
ual operation. It
operates normally
by registering a
memory.

Go to step 2.

2

CHECK MEMORY FUNCTION.
At the step 1 memory operation, check the beep
sound (once).

Check the beep sound?

Go to step 3.

<Ref. to SE-36,
FAILS TO STORE
THE LOCATION
TO THE MEMORY
(DRIVER’S SEAT,
WITH MEMORY),
INSPECTION,
Power Seat Sys-
tem.>

3

CHECK SWITCH.
1) Disconnect the harness connector of mem-
ory switch assembly.
2) Check memory switch. <Ref. to SE-28,
CHECK MEMORY SWITCH (MEMORY-
EQUIPPED), INSPECTION, Power Seat Sys-
tem.>

Is there any problem on the
inspection result?

Go to step 4.

Replace the mem-
ory switch assem-
bly.

4

CHECK HARNESS.
Measure the resistance between the memory
switch connector and memory module connec-
tor.

Connector & terminal

(R195) No. 13 — (R198) No. 3:
(R195) No. 14 — (R198) No. 2:
(R195) No. 15 — (R198) No. 8:

Is the resistance less than 10

:? Go to step 5.

Check power seat
harness.

5

CHECK COMBINATION METER.
Turn the ignition switch to ON and check the
indicator light inside the meter.
• AT model: when the select lever is in “P” posi-
tion
• MT model: when the parking brake lever is
pulled

Is indicator light displayed?

Go to step 6.

Check the combi-
nation meter. <Ref.
to IDI-5, INSPEC-
TION, Combina-
tion Meter
System.>

6

CHECK OPERATION.
Check the rotation of each motor when perform-
ing all the power seat switch operation.

Does each motor rotate for one
second or more when operating
each switch?

Replace the mem-
ory module.

Encoder defec-
tion. Replace the
appropriate motor.

SE-38

Power Seat System

SEATS

11.INITIALIZATION IS IMPOSSIBLE

12.ALL FUNCTION FAILS TO OPERATE (PASSENGER’S SEAT)

Step

Check

Yes

No

1

CHECK OPERATION.
Check the rotation of each motor when perform-
ing all the power seat switch operation.

Does each motor rotate for one
second or more when operating
each switch?

Go to step 2.

Encoder defec-
tion. Replace the
appropriate motor.

2

CHECK SWITCH.
1) Disconnect the harness connector of power
seat switch assembly.
2) Measure resistance between all terminals of
power seat switch assembly. <Ref. to SE-27,
CHECK POWER SEAT SWITCH, INSPEC-
TION, Power Seat System.>

Is there any problem on the
inspection result?

Replace the mem-
ory module.

Replace the power
seat switch assem-
bly.

Step

Check

Yes

No

1

CHECK SEAT FUNCTION.
Operate each power seat switch and check that
each power seat function operates normally.

Does all function fails to oper-
ate?

Go to step 2.

Check the motor
which does not
operate. <Ref. to
SE-39, SOME OF
THE MOTORS DO
NOT OPERATE
(PASSENGER’S
SEAT), INSPEC-
TION, Power Seat
System.>

2

CHECK FUSE.
Check the power seat fuse inside the fuse box.

Is the fuse blown out?

Replace the appro-
priate fuse.

Go to step 3.

3

CHECK POWER SUPPLY CIRCUIT.
1) Disconnect the connector of power seat
switch assembly.
2) Measure the voltage between harness con-
nector and chassis ground.

Connector & terminal

(R200) No. 7 (+) — Chassis ground (–):

Is the voltage 10 V or more?

Go to step 4.

Check body har-
ness.

4

CHECK POWER SUPPLY CIRCUIT.
Measure the resistance between power seat
switch harness connector and chassis ground.

Connector & terminal

(R200) No. 8 — Chassis ground:

Is the resistance less than 10

:? Replace the power

seat switch assem-
bly.

Check body har-
ness.

SE-39

Power Seat System

SEATS

13.SOME OF THE MOTORS DO NOT OPERATE (PASSENGER’S SEAT)

• Malfunction of slide operation

• Malfunction of reclining operation

Step

Check

Yes

No

1

CHECK SWITCH.
1) Disconnect the connector of power seat
switch assembly.
2) Measure resistance between terminals
while moving the switch to slide forward and
slide rearward positions. <Ref. to SE-27,
CHECK POWER SEAT SWITCH, INSPEC-
TION, Power Seat System.>

Is there any problem on the
inspection result?

Go to step 2.

Replace the power
seat switch assem-
bly.

2

CHECK HARNESS.
1) Disconnect the power seat switch connector
and slide motor connector.
2) Measure the resistance between power
seat switch connector and slide motor connec-
tor.

Connector & terminal

(R202) No. 1 — (R200) No. 13:
(R202) No. 2 — (R200) No. 14:

Is the resistance less than 10

:? Go to step 3.

Check power seat
harness.

3

CHECK SLIDE MOTOR.
1) Connect the power seat switch connector
and slide motor connector.
2) Apply 12 V voltage to the slide motor and
check the motor rotation.

Connector & terminal

(R200) No. 14 (+) — (R200) No. 13 (–):
(R200) No. 13 (+) — (R200) No. 14 (–):

Does the motor rotate nor-
mally?

Check for tempo-
rary poor contact
or mechanical
trouble in slide rail.

Slide motor prob-
lem. Replace the
slide motor assem-
bly.

Step

Check

Yes

No

1

CHECK SWITCH.
1) Disconnect the connector of power seat
switch assembly.
2) Measure resistance between terminals
while moving the switch to reclining forward and
reclining rearward positions. <Ref. to SE-27,
CHECK POWER SEAT SWITCH, INSPEC-
TION, Power Seat System.>

Is there any problem on the
inspection result?

Go to step 2.

Replace the power
seat switch assem-
bly.

2

CHECK HARNESS.
1) Disconnect the power seat switch connector
and reclining motor connector.
2) Measure the resistance between power
seat switch connector and reclining motor con-
nector.

Connector & terminal

(R201) No. 2 — (R200) No. 4:
(R201) No. 1 — (R200) No. 3:

Is the resistance less than 10

:? Go to step 3.

Check power seat
harness.

3

CHECK RECLINING MOTOR.
1) Connect the power seat switch connector
and reclining motor connector.
2) Apply 12 V voltage to the reclining motor
and check the motor rotation.

Connector & terminal

(R200) No. 3 (+) — (R200) No. 4 (–):
(R200) No. 4 (+) — (R200) No. 3 (–):

Does the motor rotate nor-
mally?

Check for tempo-
rary poor contact
or mechanical
trouble in reclining
hinge.

Reclining motor
problem. Replace
the reclining motor
assembly.