1997 SUBARU LEGACY service

B4M1031A
2) Secure relay box connector to connector bracket.
CAUTION:
Align connector wit mating receptacle.
3) Using cable clip, secure hydraulic unit harness to relay
box harness.
CAUTION:
Make sure hydraulic unit harness band is secured
beneath cable clip.
4) Connect connector to relay box.
5) Install canister.
6) Install air intake duct.
7) Connect ground cable to battery.
B4M1002
16. ABS Control Module (ABS 5.3 Type)
A: REMOVAL
1. LHD MODEL
1) Turn ignition switch to OFF.
2) Remove front pillar lower trim.
3) Remove glove box.
4) Remove glove box bracket.
B4M1003
5) Remove pocket back panel.
B4M1004
6) Remove bolt from bracket.
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4-4SERVICE PROCEDURE
15. Hydraulic Unit for ABS System (ABS 5.3 Type) - 16. ABS Control Module (ABS 5.3 Type)

B4M1005
7) Remove bolt cover and bolt.
B4M1006
8) Remove ABSCM upper mounting bolt.
B4M1045A
9) Pull the lower part of the instrument panel rearward 5
cm (1.97 in).
CAUTION:
When pulled more than 6 cm (2.4 in), the instrument
panel may be deformed.
NOTE:
At this time, instrument panel securing clips can be
removed.
B4M1008
10) Remove two ABSCM lower mounting bolts from the
lower part of the instrument panel.
B4M1009A
11) While holding the lower part of instrument panel rear-
ward 5 cm (1.97 in) remove the ABSCM.
CAUTION:
When pulled more than 6 cm (2.4 in), the instrument
panel may be deformed.
12) Disconnect connector from ABSCM.
CAUTION:
Do not drop or bump ABSCM.
89
4-4SERVICE PROCEDURE
16. ABS Control Module (ABS 5.3 Type)

B: INSPECTION
Check that connector is connected correctly and that con-
nector terminal sliding resistance is correct.
C: INSTALLATION
To install, reverse the removal procedure.
17. G Sensor for ABS System (ABS 5.3
Type)
A: REMOVAL AND INSTALLATION
1) Turn ignition switch to OFF.
2) Remove console box.
3) Disconnect connector form G sensor.
B4M1011
4) Remove G sensor from body.
5) To install, reverse the removal procedure.
CAUTION:
Do not drop or bump G sensor.
B4M0915
B: INSPECTION
1. USING CIRCUIT TESTER
1) Turn ignition switch to OFF.
2) Remove G sensor from vehicle.
3) Connect connector to G sensor.
4) Turn ignition switch to ON.
5) Measure voltage between G sensor connector termi-
nals.
: Connector & terminal
(P9) No. 2 (+)—No.1()
Is voltage 2.3±0.2 V when G sensor is hori-
zontal?
: Go to next.
: Replace G sensor.
90
4-4SERVICE PROCEDURE
16. ABS Control Module (ABS 5.3 Type) - 17. G Sensor for ABS System (ABS 5.3 Type)

B: INSPECTION
Check that connector is connected correctly and that con-
nector terminal sliding resistance is correct.
C: INSTALLATION
To install, reverse the removal procedure.
17. G Sensor for ABS System (ABS 5.3
Type)
A: REMOVAL AND INSTALLATION
1) Turn ignition switch to OFF.
2) Remove console box.
3) Disconnect connector form G sensor.
B4M1011
4) Remove G sensor from body.
5) To install, reverse the removal procedure.
CAUTION:
Do not drop or bump G sensor.
B4M0915
B: INSPECTION
1. USING CIRCUIT TESTER
1) Turn ignition switch to OFF.
2) Remove G sensor from vehicle.
3) Connect connector to G sensor.
4) Turn ignition switch to ON.
5) Measure voltage between G sensor connector termi-
nals.
: Connector & terminal
(P9) No. 2 (+)—No.1()
Is voltage 2.3±0.2 V when G sensor is hori-
zontal?
: Go to next.
: Replace G sensor.
90
4-4SERVICE PROCEDURE
16. ABS Control Module (ABS 5.3 Type) - 17. G Sensor for ABS System (ABS 5.3 Type)

B4M0917A
: Connector & terminal
(P9) No. 2 (+)—No.1()
Is voltage 3.9±0.2 V when G sensor is
inclined forwards to 90°?
: Go to next.
: Replace G sensor.
B4M0918A
: Connector & terminal
(P9) No. 2 (+)—No.1()
Is voltage 0.7±0.2 V when G sensor is
inclined backwards to 90°?
: G sensor is normal.
: Replace G sensor.
2. USING SELECT MONITOR
1) Turn ignition switch to OFF.
2) Connect select monitor connector to data link connec-
tor.
3) Turn select monitor into ABS mode.
B4M0927
4) Press F,1and 0on the select monitor.
5) Rear the select monitor display.
: Is the indicated reading 2.3±0.2 V when the
vehicle is in horizontal position?
: Go to next step 6).
: Replace G sensor.
6) Remove console box.
7) Remove G sensor from vehicle. (Do not disconnect
connector.)
B4M0917A
8) Read the select monitor display.
: Is the indicated reading 3.9±0.2 V when G
sensor is inclined forwards to 90°?
: Go to next.
: Replace G sensor.
91
4-4SERVICE PROCEDURE
17. G Sensor for ABS System (ABS 5.3 Type)

B4M0918A
: Is the indicated reading 0.7±0.2 V when G
sensor is inclined backwards to 90°?
: G sensor is normal.
: Replace G sensor.
92
4-4SERVICE PROCEDURE
17. G Sensor for ABS System (ABS 5.3 Type)

18. Brake Hose and Pipe
SUPPLEMENTAL RESTRAINT SYSTEM“AIRBAG”
Airbag system wiring harness is routed near the center
brake pipe.
CAUTION:

All Airbag system wiring harness and connectors
are colored yellow. Do not use electrical test equip-
ment on these circuit.

Be careful not to damage Airbag system wiring har-
ness when servicing the center brake pipe.
A: REMOVAL AND INSTALLATION
CAUTION:

When removing and installing the brake pipe, make
sure that it is not bent.

After installing the brake pipe and hose, bleed the
air.

After installing the brake hose, make sure that it
does not touch the tire or suspension assembly, etc.
1. MODELS WITHOUT ABS
G4M0472
1Union bolt

2Front brake hose RH

3Proportioning valve

4Front brake pipe

5Front adapter pipe (UPPER)

6Front adapter pipe (LOWER)

7Front brake hose LH
8Center brake pipe ASSY

9Connector bracket

10Two-way connector

11Rear brake pipe RH

12Rear brake hose drum

13Rear brake pipe ASSY

14Rear brake pipe LH
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 13±3 (1.3±0.3, 9.4±2.2)
T2: 15
+3
2(1.5+0.3
0.2, 10.8+2.2
1.4)
T3: 18±3 (1.8±0.3, 13.0±2.2)
T4: 18±5 (1.8±0.5, 13.0±3.6)
93
4-4SERVICE PROCEDURE
18. Brake Hose and Pipe

2. MODELS WITH ABS (EXCEPT ABS 5.3 TYPE)
B4M0708A
1Union bolt

2Front brake hose RH

3Valve bracket

4Proportioning valve

5Front brake pipe ASSY

6Front adapter pipe

7Front brake hose LH
8Two-way connector

9Connector bracket

10Rear brake hose RH

11Rear brake pipe ASSY

12Rear brake hose LH

13Center brake pipe ASSY
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 13±3 (1.3±0.3, 9.4±2.2)
T2: 15
+3
2(1.5+0.3
0.2, 10.8+2.2
1.4)
T3: 18±3 (1.8±0.3, 13.0±2.2)
T4: 18±5 (1.8±0.5, 13.0±3.6)
94
4-4SERVICE PROCEDURE
18. Brake Hose and Pipe