Subaru Legacy (2005 year). Service manual - part 605

5AT(diag)-11

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

Electrical Component Location

(1)

AT-00375

AT-01447

(2)

AT-01445

(3)

(4)

(5)

AT-01448

AT-01446

(6)

(7)

AT-01475

AT-01759

(8)

AT-01760

(9)

5AT(diag)-12

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

Electrical Component Location

3. SOLENOID

(1)

High & low reverse clutch solenoid

(4)

Input clutch solenoid

(7)

Transfer solenoid

(2)

Direct clutch solenoid

(5)

Line pressure solenoid

(8)

Low coast brake solenoid

(3)

Front brake solenoid

(6)

Lock up solenoid

(9)

Memory box

AT-01449

(8)

(6)

(5)

(1)

(7)

(9)

(4)

(2)

(3)

5AT(diag)-13

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

Transmission Control Module (TCM) I/O Signal

5. Transmission Control Module (TCM) I/O Signal

A: ELECTRICAL SPECIFICATION

NOTE:
The measurement should be performed after warming up.

Item

Connector 

No.

Ter-

min

al 

No.

Measuring conditions

Voltage (V)

Resistance 

between termi-

nal and chassis 

ground

Remarks

P/L solenoid output

B54

9

Engine ON, “P” range, 
Accelerator OFF, Brake 
ON

Approx. 4.0 — 
6.0 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

Manual mode 1st, Accel-
erator OFF, Brake ON

Approx. 2.0 — 
4.0 V

PVIGN power supply

B54

8

Ignition switch ON

Power supply 
voltage

—

7

Ignition switch ON

Power supply 
voltage

—

I/C oil pressure switch 
input

B54

6

—

—

—

The condition 
of I/C oil pres-
sure switch 
cannot read by 
the tester.

Power GND

B54

5

Always

Approx. 0 V

—

CAN communication line 
(+)

B54

4

—

—

—

CAN communication line 
(

−)

B54

3

—

—

—

ATF temperature sensor 
1 input

B54

2

Ignition switch ON

2.5 — 2.9 V 
(ATF tempera-
ture 20

°C 

(68

°F))

0.8 — 1.0 V 
(ATF tempera-
ture 80

°C 

(176

°F))

4.0 — 5.0 k

Ω 

(ATF tempera-
ture 20

°C 

(68

°F))

0.7 — 0.9 k

Ω 

(ATF tempera-
ture 80

°C 

(176

°F))

Battery power supply

B54

1

Always

Power supply 
voltage

—

AT-01451

1 2 3 4

10 11 12
19 20 21

13

5 6

14 15

7

8

9

16

17

18

22

23

24

1 2

7

8

9

5 6

3 4

10 11 12
19 20 21

13

14 15

16

17

18

22

23

24

B55

B54

5AT(diag)-14

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

Transmission Control Module (TCM) I/O Signal

I/C solenoid output

B54

18

While driving at 1st — 3rd 
of manual mode

Approx. 5.5 — 
7.5 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

While driving at 4th or 5th 
of manual mode

Approx. 0 V

H&LR/C solenoid output

B54

17

While driving at 2nd of 
manual mode

Approx. 5.5 — 
7.5 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

While driving at 3rd — 5th 
of manual mode

Approx. 0 V

Control valve power sup-
ply output

B54

16

Ignition switch ON

Power supply 
voltage

—

Ignition switch OFF

Approx. 0 V

LC/B solenoid output

B54

15

While driving at 1st — 2nd 
of manual mode

Power supply 
voltage

5 — 17 

Ω (ATF 

temperature 
25

°C (77°F))

While driving at 3rd — 5th 
of manual mode

Approx. 0 V

Power GND

B54

14

Always

Approx. 0 V

—

Analog GND (Sensor 
GND)

B54

13

Always

Approx. 0 V

—

LC/B oil pressure switch 
input

B54

12

—

—

—

The condition 
of LC/B oil 
pressure switch 
cannot read by 
the tester.

ATF temperature sensor 
2 input

B54

11

Ignition switch ON

2.3 — 2.7 V 
(ATF tempera-
ture 20

°C 

(68

°F))

0.6 — 0.8 V 
(ATF tempera-
ture 80

°C 

(176

°F))

3.0 — 3.6 k

Ω 

(ATF tempera-
ture 20

°C 

(68

°F))

0.4 — 0.6 k

Ω 

(ATF tempera-
ture 80

°C 

(176

°F))

PVIGN power supply 
relay output

B54

10

Ignition switch ON

0 — 1.5 V

—

Fr/B solenoid output

B54

24

While driving at other than 
4th of manual mode

Approx. 4.5 — 
6.5 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

While driving at 4th of 
manual mode

Approx. 0 V

L/U solenoid output

B54

23

When lock-up

Approx. 3.5 — 
5.5 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

When not lock-up

Approx. 0 V

D/C solenoid output

B54

22

While driving at 1st or 5th 
of manual mode

Approx. 5.5 — 
7.5 V

3 — 9 

Ω (ATF 

temperature 
20

°C (68°F))

Driving fre-
quency 750 — 
850 Hz

While driving at 2nd — 4th 
of manual mode

Approx. 0 V

D/C oil pressure switch 
input

B54

21

—

—

—

The condition 
of D/C oil pres-
sure switch 
cannot read by 
the tester.

Subaru Select Monitor 
communication line

B54

20

—

—

—

Control GND

B54

19

Always

Approx. 0 V

—

Item

Connector 

No.

Ter-

min

al 

No.

Measuring conditions

Voltage (V)

Resistance 

between termi-

nal and chassis 

ground

Remarks