brake sensor SUBARU FORESTER 2004 Service Owner's Manual

EN(H4DOTC 2.5)-29
ENGINE (DIAGNOSTIC)
Subaru Select Monitor
NOTE:
For detailed operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MANUAL”.
Mass air flow sensor signal Air Flow Sensor Voltage V
AT/MT identification signal AT Vehicle ID Signal ON or OFF
ETC motor relay ETC Motor Relay ON or OFF
Clutch SW Clutch Switch ON or OFF
Stop Light SW Stop Light Switch ON or OFF
SET/COAST SW SET/COAST Switch ON or OFF
RESUME/ACCEL SW RESUME/ACCEL Switch ON or OFF
Brake SW Brake Switch ON or OFF
Main SW Main Switch ON or OFF
Ignition switch signal Ignition Switch ON or OFF
Test Mode Signal Test Mode Signal ON or OFF
Neutral position switch signal Neutral Position Switch ON or OFF
Air conditioning switch signal A/C Switch ON or OFF
Air conditioning signal A/C Compressor Signal ON or OFF
Radiator main fan relay signal Radiator Fan Relay #1 ON or OFF
Knocking signal Knocking Signal ON or OFF
Radiator sub fan relay signal Radiator Fan Relay #2 ON or OFF
Power steering switch signal P/S Switch ON or OFF
Rear oxygen sensor rich signalRear O
2 Rich Signal
ON or OFF
Starter switch signal Starter Switch ON or OFF
Idle switch signal Idle Switch Signal ON or OFF
Crankshaft position sensor signal Crankshaft Position Sig. ON or OFF
Camshaft position sensor signal Camshaft Position Sig. ON or OFF
Rear defogger switch signal Rear Defogger SW ON or OFF
Blower fan switch signal Blower Fan SW ON or OFF
Small light switch signal Light Switch ON or OFF
Handle switch signal Handle Switch —
Wiper switch signal Wiper Switch ON or OFF
A/C mid pressure switch signal A/C mid Pressure Switch ON or OFF
AT coordinate retard angle demand Retard Signal form AT ON or OFF
AT coordinate fuel cut demand Fuel Cut Signal from AT ON or OFF
AT coordinate permission signal Torque Permission Signal ON or OFF
UDC not torque down output Ban of Torque Down ON or OFF
UDC torque down demand Request Torque Down UDC ON or OFF
Tumble generated valve output signal TGV Output ON or OFF
Tumble generated valve drive signal TGV Drive OPEN or CLOSERemarks Display Unit of measure

4AT-9
AUTOMATIC TRANSMISSION
General Description
4. CONTROL VALVE AND HARNESS ROUTING
A Non-turbo model B Turbo model
(1) Stay (11) Accumulator piston (23) 2-4 brake duty solenoid
(2) Transmission harness ASSY (12) Accumulator spring (24) Line pressure duty solenoid
(3) O-ring (13) Side plate (25) Low clutch timing solenoid
(4) O-ring (14) Upper separate plate (26) Lock-up duty solenoid
(5) Torque converter turbine speed
sensor(15) Middle control valve body (27) Oil strainer
(16) Separate plate (28) Control valve ASSY
(6) O-ring (17) Fluid filter (29) Rear vehicle speed sensor (turbo
model)
(7) Front vehicle speed sensor (18) Fluid filter
(8) O-ring (19) Lower control valve body
(9) Rear vehicle speed sensor (non-
turbo model)(20) Shift solenoid 2Tightening torque: N
⋅m (kgf-m, ft-lb)
(21) Shift solenoid 1T1: 7 (0.7, 5.1)
(10) Upper control valve body (22) 2-4 brake timing solenoidT2: 8 (0.8, 5.8)
AT-01864
T1T2
T2
T2
T2
T2
T2
T2T2
T2
T1
(1)(2)
(3)(4)
(5)
(6)
(7)
(10)
(11)
(12)
(14)
(13)(15)
(16)
(17)
A(24)(19)
(18)
(20)
(21)
(22)
(23) (26) (25)
(27)
(28)
B
T1
(8)
(9)
T1
(8)
(29)

4AT-56
AUTOMATIC TRANSMISSION
Front Vehicle Speed Sensor
17) Lower the transmission jack.
NOTE:
Do not separate the transmission jack and trans-
mission.
18) Remove the ATF cooler inlet and outlet pipes.
CAUTION:
When removing the outlet pipe, be careful not
to lose the ball and spring used with retaining
screw.
19) Remove the front vehicle speed sensor and
torque converter turbine speed sensor.
20) Remove the rear vehicle speed sensor. (Non-
turbo model)21) Disconnect the connector from rear vehicle
speed sensor. (Turbo model)
22) Remove the oil pan.
23) Remove the duty solenoid connector and ATF
temperature sensor. Remove the connectors from
clip and disconnect it.
(A) Front vehicle speed sensor
(B) Torque converter turbine speed sensor
(A) Rear vehicle speed sensor
(B) Front vehicle speed sensor
AT-00044
(A)
(B)
AT-00045
(A) (B)
(A) Rear vehicle speed sensor
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
(I) Transfer duty solenoid (Brown)
(J) Transmission ground
AT-01338
(A)
AT-00049
(A) (B) (J) (C) (D) (E)
(I)
(H)
(F) (G)

4AT-57
AUTOMATIC TRANSMISSION
Front Vehicle Speed Sensor
24) Disconnect the ground cable from control valve
connector. (Turbo model)
25) Remove the transmission harness assembly.
B: INSTALLATION
1) Pass the transmission harness assembly
through the hole in the transmission case.2) Connect the harness connectors.
Connect the connectors of same color, and secure
the connectors to valve body using clips. (Non-tur-
bo model)
Tightening torque (Transmission ground ca-
ble):
8 N
⋅m (0.8 kgf-m, 5.8 ft-lb)
3) Connect the control valve connector, and then
connect the ground cable. (Turbo model)
Tightening torque:
8 N
⋅m (0.8 kgf-m, 5.8 ft-lb)
(A) Transmission ground cable
(B) Control valve connector
AT-00050
(B)
(A)
AT-00048
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
(I) Transfer duty solenoid (Brown)
(J) Transmission ground
(A) Transmission ground cable
(B) Control valve connector
AT-00049
(A) (B) (J) (C) (D) (E)
(I)
(H)
(F) (G)
AT-00050
(B)
(A)

4AT-61
AUTOMATIC TRANSMISSION
Control Valve Body
17.Control Valve Body
A: REMOVAL
1. NON-TURBO MODEL
1) Lift-up the vehicle.
2) Clean the transmission exterior.
3) Drain the ATF completely.
NOTE:
 Tighten the drain plug (ATF) after draining the
ATF.
 Always use new gasket.
Tightening torque:
25 N
⋅m (2.5 kgf-m, 18.1 ft-lb)
4) Remove the oil pan.
5) Remove and clean the magnet.
6) Remove the old liquid gasket on the oil pan and
transmission case completely.
7) Remove the pipe. (EC, EK model)8) Disconnect the connectors of each solenoid, and
then disconnect the ATF temperature sensor from
control valve.
9) Remove the control valve body.
NOTE:
When removing the control valve body, be careful
not to interfere with transfer duty solenoid wiring.
2. TURBO MODEL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Lift-up the vehicle.
4) Clean the transmission exterior.
(A) Oil pan
(B) Drain plug (ATF)
(C) Differential gear oil drain plug
AT-00016
(A) (B)
(C)
AT-00801
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
(I) Transfer duty solenoid (Brown)
(J) Transmission ground
AT-02119
(A) (B) (J) (C) (D) (E)
(I)
(H)
(F) (G)
AT-02120

4AT-63
AUTOMATIC TRANSMISSION
Control Valve Body
B: INSTALLATION
1. NON-TURBO MODEL
1) Set the range select lever in “N” range.
2) Install the control valve, ATF temperature sensor
and ground connectors.
Tightening torque:
8 N
⋅m (0.8 kgf-m, 5.8 ft-lb)
3) Connect all connectors.4) Install the pipe. (EC, EK model)
Tightening torque:
8 N
⋅m (0.8 kgf-m, 5.8 ft-lb)
5) Attach the magnet at the specified position of oil
pan.
6) Apply proper amount of liquid gasket to the en-
tire oil pan mating surface.
Liquid gasket:
THREE BOND 1217B (Part No. K0877YA020)
Bolt length mm (in)
(A) 30 (1.18)
(B) 55 (2.17)
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) Transfer duty solenoid (Brown)
AT-02121
(A)(A)(A)(A)
(A)(A)
(A)
(A)
(B)
(B)
(B)
(B)
(B)
AT-02122
(A) (B) (C) (D) (E)
(H)
(F)
(G)
AT-00801
AT-00057
AT-00051

4AT-71
AUTOMATIC TRANSMISSION
Shift Solenoids, Duty Solenoids and ATF Temperature Sensor
19.Shift Solenoids, Duty Sole-
noids and ATF Temperature
Sensor
A: REMOVAL
1. SHIFT SOLENOID AND DUTY SOLE-
NOID
1) Lift-up the vehicle.
2) Clean the transmission exterior.
3) Drain the ATF completely.
4) Replace the gasket with new one, and then tight-
en the drain plug (ATF).
Tightening torque:
25 N
⋅m (2.5 kgf-m, 18.1 ft-lb)
5) Remove the oil pan.
6) Disconnect the solenoid and duty solenoid con-
nectors.7) Remove the solenoid and duty solenoid.
2. ATF TEMPERATURE SENSOR
For removal procedure of the ATF temperature
sensor, refer to “Front Vehicle Speed Sensor”.
Sensor.>
B: INSTALLATION
1. SHIFT SOLENOID AND DUTY SOLE-
NOID
1) Insert the solenoid and duty solenoid into the
specified position.
(A) Oil pan
(B) Drain plug (ATF)
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) Transfer duty solenoid (Brown)
AT-00080
(A)(B)
AT-02122
(A) (B) (C) (D) (E)
(H)
(F)
(G)
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
AT-02124
(E)
(F)(G)
(D)(C)
(B)(A)
AT-02124
(E)
(F)(G)
(D)(C)
(B)(A)

4AT-72
AUTOMATIC TRANSMISSION
Shift Solenoids, Duty Solenoids and ATF Temperature Sensor
2) Tighten the bolt and nut.
Tightening torque:
8 N
⋅m (0.8 kgf-m, 5.8 ft-lb)
3) Connect the harness connectors.
Connect the connectors of same color, and con-
nect the connectors to control valve body using
clips.4) Apply proper amount of liquid gasket to the en-
tire oil pan mating surface.
Liquid gasket:
THREE BOND 1217B (Part No. K0877YA020)
5) Fill liquid gasket to holes except for bolt holes
(three) of transmission case.
Liquid gasket:
THREE BOND 1217B (Part No. K0877YA020)
6) Install the oil pan with equally tighten the bolts.
Tightening torque:
5 N
⋅m (0.5 kgf-m, 3.6 ft-lb)
7) Pour ATF from the ATF charge pipe. 4AT-30, Automatic Transmission Fluid.>
8) Check the ATF level. ic Transmission Fluid.>
2. ATF TEMPERATURE SENSOR
For installation procedure of the ATF temperature
sensor, refer to “Front Vehicle Speed Sensor”.
Speed Sensor.>
Bolt length mm (in)
(A) 12 (0.47)
(B) 40 (1.57)
(C) 45 (1.77)
(D) 62 (2.44)
(E) 73 (2.87)
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) Transfer duty solenoid (Brown)
AT-02126
E
AD
EE
D
D
B
CC
AT-02122
(A) (B) (C) (D) (E)
(H)
(F)
(G)
AT-00051
AT-02123

4AT(H4SO)-13
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Transmission Control Module (TCM) I/O Signal
Inhibitor
switch“2” range
switchB55 6Select lever in “2” range Less than 1
—
Select lever in any other
than “2” rangeMore than 8
“1” range
switchB55 7Select lever in “1” range Less than 1
—
Select lever in any other
than “1” rangeMore than 8
Brake switch B55 12Brake pedal depressed More than 10.5
—
Brake pedal released Less than 1
Kick-down switch B55 11Throttle fully opened Less than 1
—
Throttle fully closed More than 6.5
AT OIL TEMP warning light B56 10Light ON Less than 1
—
Light OFF More than 9
Throttle position sensor B54 3Throttle fully closed 0.2 — 1.0
—
Throttle fully open 4.2 — 4.7
Throttle position sensor
power supplyB54 2Ignition switch ON (with
engine OFF)4.8 — 5.3 —
ATF temperature sensor B54 11ATF temperature 20°C
(68°F)1.6 — 2.0 2.1 k — 2.9 k
ATF temperature 80°C
(176°F)0.4 — 0.9 275 — 375
Rear vehicle speed sensor B55 24Vehicle stopped 0
450 — 650
Vehicle speed at least 20
km/h (12 MPH)More than 1 (AC range)
Front vehicle speed sensor B55 18Vehicle stopped 0
450 — 650
Vehicle speed at least 20
km/h (12 MPH)More than 1 (AC range)
Torque converter turbine
speed sensorB55 8Engine idling after warm-
up (D range)0
450 — 650
Engine idling after warm-
up (N range)More than 1 (AC range)
Vehicle speed output signal B56 17Vehicle speed at most 10
km/h (6 MPH)Less than 1 ←
→ More than 4—
Engine speed signal B55 17Ignition switch ON (with
engine OFF)More than 10.5
—
Ignition switch ON (with
engine ON)8 — 11
Cruise set signal B55 22When cruise control is set
(SET lamp ON)Less than 1
—
When cruise control is not
set (SET lamp OFF)More than 6.5
Torque control signal 1 B56 5Ignition switch ON (with
engine ON)More than 4 —
Torque control signal 2 B56 14Ignition switch ON (with
engine ON)More than 4 —
Torque control cut signal B55 10Ignition switch ON
(After engine is warmed-up)8—
Intake manifold pressure
signalB54 1 Engine idling after warm-up 0.4 — 1.6 —
Shift solenoid 1 B54 221st or 4th gear More than 9
10 — 16
2nd or 3rd gear Less than 1
Shift solenoid 2 B54 51st or 2nd gear More than 9
10 — 16
3rd or 4th gear Less than 1 Check with ignition switch ON.
ContentConnector
No.Terminal No. Measuring conditions Voltage (V)Resistance
to chassis
ground (Ω)

4AT(H4SO)-14
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Transmission Control Module (TCM) I/O Signal
Line pressure duty solenoid B54 9Ignition switch ON (with
engine OFF)
Throttle fully closed after
war m-up1.5 — 4.0
2.0 — 4.5
Ignition switch ON (with
engine OFF)
Throttle fully open after
war m-upLess than 0.5
Lock-up duty solenoid B54 7When lock up occurs More than 8.5
10 — 17
When lock up is released Less than 0.5
Transfer duty solenoid B54 6Fuse on FWD switch Less than 0.5
10 — 17 Fuse removed from FWD
switch (with throttle fully
open and with select lever
in 1st gear)More than 8.5
2-4 brake duty solenoid B54 18Throttle fully closed (with
engine OFF) after warm-up1.5 — 5.0
2.0 — 4.5
Throttle fully open (with
engine OFF) after warm-upLess than 0.5
2-4 brake timing solenoid B54 161st gear Less than 1
10 — 16
3rd gear More than 9
Low clutch timing solenoid B54 152nd gear Less than 1
10 — 16
4th gear More than 9
HOLD switch B55 16HOLD switch ON Less than 1 —
HOLD switch OFF More than 8 —
POWER switch B55 23POWER switch ON Less than 1 —
POWER switch OFF More than 10 —
POWER indicator light B56 11Light ON Less than 1 —
Light OFF More than 9 —
FWD switch B55 20Fuse removed 6 — 9.1 —
Fuse installed Less than 1 —
FWD indicator light B56 2Fused on FWD switch Less than 1 —
Fuse removed from FWD
switchMore than 9 —
ABS signal B55 21ABS switch ON Less than 1 —
ABS switch OFF 6.5 — 15 —
Sensor ground line 1 B54 20 — 0 Less than 1
Sensor ground line 2 B55 9 — 0 Less than 1
System ground lineB56 19
— 0 Less than 1
B54 21
Sensor ground line 3 B54 10 — 0 Less than 1
Sensor ground line 4 B54 19 — 0 Less than 1
AT diagnosis signal B56 21 Ignition switch ONLess than 1 ←
→ More than 4—
Data link signal (Subaru
Select Monitor)B56 15 — — —Check with ignition switch ON.
ContentConnector
No.Terminal No. Measuring conditions Voltage (V)Resistance
to chassis
ground (Ω)