Subaru Legacy (2005 year). Manual — part 775

ABS(diag)-65

ABS (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK INPUT VOLTAGE OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ABSCM&H/
U.
3) Run the engine at idle.
4) Measure the voltage between ABSCM&H/
U connector and chassis ground.

Connector & terminal

(B301) No. 18 (+) — Chassis ground (

−

):

(B301) No. 14 (+) — Chassis ground (

−

):

Is the voltage 10 — 15 V?

Go to step 2.

Repair the har-
ness connector
between battery
and ABSCM&H/U.

2

CHECK GROUND CIRCUIT OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Measure the resistance between
ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 15 — Chassis ground:

Is the resistance less than 0.5
Ω?

Go to step 3.

Repair the
ABSCM&H/U
ground harness.

3

CHECK VALVE RELAY IN ABSCM&H/U.
Measure the resistance between ABSCM&H/U
terminals.

Terminals

No. 14 — No. 15:

Is the resistance more than 1
M

Ω?

Go to step 4.

Replace the
ABSCM only.
<Ref. to ABS-8,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>

4

CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in con-

nector between generator, bat-
tery and ABSCM&H/U?

Repair the con-
nector.

Go to step 5.

5

CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Perform clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.

Is the same DTC displayed?

Replace the
ABSCM only.
<Ref. to ABS-8,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>

Go to step 6.

6

CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Inspect the DTC
using “List of Diag-
nostic Trouble
Code (DTC)”.
<Ref. to
ABS(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>

Temporary poor
contact occurs.

ABS(diag)-66

ABS (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

V: DTC C0111 MOTOR/MOTOR RELAY MALFUNCTION

DTC DETECTING CONDITION:
• Defective motor
• Defective motor relay
• Defective harness connector
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:

VALVE
RELAY

ABS00741

B301

E

E

13

15

12

ABSCM & H/U

18

M

MAIN SBF

SBF-6

No.33

E

SBF-1

B301

7 8 9 10 11

6

5

4

1

15

14

13

12

2 3

22 23 24 25 26

21

20

19

16 17 18

BATTERY

IGNITION
SWITCH

MOTOR RELAY

SOLENOID

VALVE

PUMP MOTOR

FL INLET

RL INLET

FR INLET

RR INLET

FL OUTLET

RL OUTLET

FR OUTLET

RR OUTLET

ABS(diag)-67

ABS (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK INPUT VOLTAGE OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ABSCM&H/
U.
3) Turn the ignition switch to ON.
4) Measure the voltage between ABSCM&H/
U connector and chassis ground.

Connector & terminal

(B301) No. 13 (+) — Chassis ground (

−

):

Is the voltage 10 — 15 V?

Go to step 2.

Repair the har-
ness connector
between battery
and ABSCM&H/U.

2

CHECK GROUND CIRCUIT OF MOTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between
ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 12 — Chassis ground:

Is the resistance less than 0.5
Ω?

Go to step 3.

Repair the
ABSCM&H/U
ground harness.

3

CHECK INPUT VOLTAGE OF ABSCM&H/U.
1) Run the engine at idle.
2) Measure the voltage between ABSCM&H/
U connector and chassis ground.

Connector & terminal

(B301) No. 18 (+) — Chassis ground (

−

):

Is the voltage 10 — 15 V?

Go to step 4.

Repair the har-
ness connector
between battery,
ignition switch and
ABSCM&H/U.

4

CHECK GROUND CIRCUIT OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Measure the resistance between
ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 15 — Chassis ground:

Is the resistance less than 0.5
Ω?

Go to step 5.

Repair the
ABSCM&H/U
ground harness.

5

CHECK POOR CONTACT IN CONNECTOR.
Turn the ignition switch to OFF.

Is there poor contact in con-
nector between generator, bat-
tery and ABSCM&H/U?

Repair the con-
nector.

Go to step 6.

6

CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Perform clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.

Is the same DTC displayed?

Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>

Go to step 7.

7

CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Inspect the DTC
using “List of Diag-
nostic Trouble
Code (DTC)”.
<Ref. to
ABS(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>

Temporary poor
contact occurs.

NOTE:
Though ABS warn-
ing light remains to
illuminate at this
time, it is normal.
Drive the vehicle at
more than 12 km/h
(7 MPH) in order to
make ABS warning
light go off. Be sure
to drive the vehicle
and check the
warning light goes
off.

ABS(diag)-68

ABS (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

W: DTC C0116 FAULTY STOP LIGHT SWITCH

DTC DETECTING CONDITION:
Defective stop light switch
WIRING DIAGRAM:

ABS00688

MAIN SBF

SBF-2

No.8

B301

2
3

E

20

ABSCM & H/U

B64 : OC

WC

1
2

OC

B65 : WC

9

5

WC

OC

: WITH CRUISE CONTROL

: WITHOUT CRUISE CONTROL

B159

STOP LIGHT SWITCH

BATTERY

B64

1 2 3 4 5 6 7 8 9 10 11

16 17 18 19 20 21 22 23 24 25 26

13

12

15

14

9

4

7

6

2

1
5

3
8

1 2

B159

B301

B65

1
3 4

2