Subaru Legacy (2005 year). Manual - part 768

 

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Subaru Legacy (2005 year). Manual - part 768

 

 

ABS(diag)-37

ABS (DIAGNOSTICS)

ABS Warning Light / Brake Warning Light Illumination Pattern

Step

Check

Yes

No

1

CHECK INSTALLATION OF ABSCM&H/U 
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Check that the ABSCM&H/U connector is 
inserted to ABSCM&H/U until the clamp locks 
onto it.

Is the connector correctly 
inserted?

Go to step 2.

Insert the 
ABSCM&H/U con-
nector until the 
clamp locks onto 
it.

2

READ DTC.
Read the DTC. <Ref. to ABS(diag)-24, Read 
Diagnostic Trouble Code (DTC).>

Is DTC displayed?

Perform the diag-
nosis according to 
DTC.

Go to step 3.

3

CHECK THE BRAKE FLUID AMOUNT.
Check the amount of brake fluid in the reser-
voir tank of master cylinder.

Is the amount of brake fluid 
between the lines of MAX and 
MIN?

Go to step 4.

Replenish brake 
fluid to the speci-
fied value.

4

CHECK BRAKE FLUID LEVEL SWITCH.
1) Disconnect the level switch connector (B16) 
from master cylinder.
2) Measure the resistance of master cylinder 
terminals.

Terminals

No. 1 — No. 2:

Is the resistance more than 1 
M

Ω?

Go to step 5.

Replace the mas-
ter cylinder.

5

CHECK PARKING BRAKE SWITCH.
1) Disconnect the connector (R4) from park-
ing brake switch.
2) Release the parking brake.
3) Measure the resistance between parking 
brake switch terminal and chassis ground.

Is the resistance more than 1 
M

Ω?

Go to step 6.

Replace the park-
ing brake switch.

6

CHECK GROUND SHORT OF HARNESS.
1) Disconnect the connector (i10) from combi-
nation meter.
2) Measure the resistance between combina-
tion meter connector and chassis ground.

Connector & terminal

(i10) No. 8 — Chassis ground:

Is the resistance more than 1 
M

Ω?

Go to step 7.

Repair the har-
ness connector 
between combina-
tion meter and 
parking brake 
switch.

7

CHECK HARNESS.
1) Disconnect the connector (B301) from 
ABSCM&H/U.
2) Disconnect the connector (i10) from the 
combination meter.
3) Measure the resistance between 
ABSCM&H/U connector and combination 
meter connector.

Connector & terminal

(B301) No. 8 — (i10) No. 7:

Is the resistance less than 0.5 
Ω?

Go to step 8.

Repair harness 
between 
ABSCM&H/U and 
combination meter 
connector.

8

CHECK POOR CONTACT IN CONNECTOR.
Check poor contact in all connectors.

Is there poor contact?

Repair the con-
nector.

Go to step 9.

9

CHECK ABSCM.
1) Connect the connector to the ABSCM&H/U.
2) Turn the ignition switch to ON.
3) Measure the resistance between combina-
tion meter connector and chassis ground.

Connector & terminal

(i10) No. 7 — Chassis ground:

Is the resistance less than 0.5 
Ω?

Check the combi-
nation meter.

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

ABS(diag)-38

ABS (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

11.List of Diagnostic Trouble Code (DTC)

A: LIST

DTC

Content of diagnosis

Display

Reference target

C0101

ABS wheel speed sen-
sor malfunction (Bro-
ken wire, short)

Rear ABS wheel 
speed sensor RH

Rear Right ABS Sen-
sor Circuit Open or 
Shorted Battery

<Ref. to ABS(diag)-41, DTC C0101 ABS 
WHEEL SPEED SENSOR MALFUNCTION 
RR SENSOR (BROKEN WIRE, INPUT 
VOLTAGE TOO HIGH), Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0102

Rear ABS wheel 
speed sensor LH

Rear Left ABS Sensor 
Circuit Open or 
Shorted Battery

<Ref. to ABS(diag)-41, DTC C0102 ABS 
WHEEL SPEED SENSOR MALFUNCTION 
RL SENSOR (BROKEN WIRE, INPUT 
VOLTAGE TOO HIGH), Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0103

Front ABS wheel 
speed sensor RH

Front Right ABS Sen-
sor Circuit Open or 
Shorted Battery

<Ref. to ABS(diag)-41, DTC C0103 ABS 
WHEEL SPEED SENSOR MALFUNCTION 
FR SENSOR (BROKEN WIRE, INPUT 
VOLTAGE TOO HIGH), Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0104

Front ABS wheel 
speed sensor LH

Front Left ABS Sensor 
Circuit Open or 
Shorted Battery

<Ref. to ABS(diag)-42, DTC C0104 ABS 
WHEEL SPEED SENSOR MALFUNCTION 
FL SENSOR (BROKEN WIRE, INPUT 
VOLTAGE TOO HIGH), Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0105

ABS wheel speed sen-
sor malfunction (ABS 
wheel speed sensor 
abnormal signal)

Abnormal signal of 
rear ABS wheel speed 
sensor RH

Rear Right ABS Sen-
sor Signal

<Ref. to ABS(diag)-45, DTC C0105 REAR 
ABS WHEEL SPEED SENSOR RH MAL-
FUNCTION (ABS WHEEL SPEED SEN-
SOR ABNORMAL SIGNAL), Diagnostic 
Procedure with Diagnostic Trouble Code 
(DTC).>

C0106

Abnormal signal of 
rear ABS wheel speed 
sensor LH

Rear Left ABS Sensor 
Signal

<Ref. to ABS(diag)-45, DTC C0106 REAR 
ABS WHEEL SPEED SENSOR LH MAL-
FUNCTION (ABS WHEEL SPEED SEN-
SOR ABNORMAL SIGNAL), Diagnostic 
Procedure with Diagnostic Trouble Code 
(DTC).>

C0107

Abnormal signal of 
front ABS wheel speed 
sensor RH

Front Right ABS Sen-
sor Signal

<Ref. to ABS(diag)-45, DTC C0107 FRONT 
ABS WHEEL SPEED SENSOR RH MAL-
FUNCTION (ABS WHEEL SPEED SEN-
SOR ABNORMAL SIGNAL), Diagnostic 
Procedure with Diagnostic Trouble Code 
(DTC).>

C0108

Abnormal signal of 
front ABS wheel speed 
sensor LH

Front Left ABS Sensor 
Signal

<Ref. to ABS(diag)-46, DTC C0108 FRONT 
ABS WHEEL SPEED SENSOR LH MAL-
FUNCTION (ABS WHEEL SPEED SEN-
SOR ABNORMAL SIGNAL), Diagnostic 
Procedure with Diagnostic Trouble Code 
(DTC).>

C0109

Power voltage malfunction

Power Supply Voltage 
Failure

<Ref. to ABS(diag)-60, DTC C0109 POWER 
VOLTAGE MALFUNCTION, Diagnostic Pro-
cedure with Diagnostic Trouble Code 
(DTC).>

C0110

ABS control module malfunction

ECM

<Ref. to ABS(diag)-59, DTC C0110 ABS 
CONTROL MODULE MALFUNCTION, 
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

ABS(diag)-39

ABS (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

C0111

Motor/motor relay on failure

Motor and Motor Relay

<Ref. to ABS(diag)-66, DTC C0111 
MOTOR/MOTOR RELAY MALFUNCTION, 
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

C0114

Valve relay on failure

Valve Relay

<Ref. to ABS(diag)-64, DTC C0114 VALVE 
RELAY MALFUNCTION, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0115

ABS wheel speed sen-
sor malfunction (ABS 
wheel speed sensor 
abnormal signal)

Abnormal ABS wheel 
speed sensor on any 
one of four sensors

Any One of Four ABS 
Sensors Signal

<Ref. to ABS(diag)-49, DTC C0115 ABS 
WHEEL SPEED SENSOR SIGNAL MAL-
FUNCTION IN ONE OF FOUR WHEELS, 
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

C0116

Stop light switch signal circuit malfunction

Brake Light Switch

<Ref. to ABS(diag)-68, DTC C0116 FAULTY 
STOP LIGHT SWITCH, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

C0118

Faulty G sensor output voltage

G Sensor Failure

<Ref. to ABS(diag)-70, DTC C0118 G SEN-
SOR OUTPUT VOLTAGE MALFUNCTION, 
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

C0119

Abnormal G sensor output voltage

G Sensor Signal

<Ref. to ABS(diag)-73, DTC C0119 G SEN-
SOR OUTPUT VOLTAGE MALFUNCTION, 
Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

C0120

Inlet valve malfunction 
in hydraulic unit

Front inlet valve LH

FL Hold Valve mal-
function

<Ref. to ABS(diag)-53, DTC C0120 FRONT 
INLET SOLENOID VALVE LH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

C0121

Outlet valve malfunc-
tion in hydraulic unit

Front outlet valve LH

FL Pressure Reducing 
Valve malfunction

<Ref. to ABS(diag)-56, DTC C0121 FRONT 
OUTLET SOLENOID VALVE LH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

C0122

Inlet valve malfunction 
in hydraulic unit

Front inlet valve RH

FR Hold Valve mal-
function

<Ref. to ABS(diag)-53, DTC C0122 FRONT 
INLET SOLENOID VALVE RH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

C0123

Outlet valve malfunc-
tion in hydraulic unit

Front outlet valve RH

FR Pressure Reducing 
Valve malfunction

<Ref. to ABS(diag)-56, DTC C0123 FRONT 
OUTLET SOLENOID VALVE RH MAL-
FUNCTION IN ABS CONTROL MODULE 
AND HYDRAULIC CONTROL UNIT 
(ABSCM&H/U), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

C0124

Inlet valve malfunction 
in hydraulic unit

Rear inlet valve LH

RL Hold Valve mal-
function

<Ref. to ABS(diag)-53, DTC C0124 REAR 
INLET SOLENOID VALVE LH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

C0125

Outlet valve malfunc-
tion in hydraulic unit

Rear outlet valve LH

RL Pressure Reduc-
ing Valve malfunction

<Ref. to ABS(diag)-56, DTC C0125 REAR 
OUTLET SOLENOID VALVE LH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

DTC

Content of diagnosis

Display

Reference target

ABS(diag)-40

ABS (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

C0126

Inlet valve malfunction 
in hydraulic unit

Rear inlet valve RH

RR Hold Valve mal-
function

<Ref. to ABS(diag)-53, DTC C0126 REAR 
INLET SOLENOID VALVE RH MALFUNC-
TION IN ABS CONTROL MODULE AND 
HYDRAULIC CONTROL UNIT (ABSCM&H/
U), Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

C0127

Outlet valve malfunc-
tion in hydraulic unit

Rear outlet valve RH

RR Pressure Reduc-
ing Valve malfunction

<Ref. to ABS(diag)-56, DTC C0127 REAR 
OUTLET SOLENOID VALVE RH MAL-
FUNCTION IN ABS CONTROL MODULE 
AND HYDRAULIC CONTROL UNIT 
(ABSCM&H/U), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

C0140

CAN communication malfunction

Improper CAN com-
munication

<Ref. to ABS(diag)-63, DTC C0140 CAN 
COMMUNICATION MALFUNCTION, Diag-
nostic Procedure with Diagnostic Trouble 
Code (DTC).>

DTC

Content of diagnosis

Display

Reference target

 

 

 

 

 

 

 

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