1997 SUBARU LEGACY contents

8. Diagnostics Chart with Trouble Code
A: LIST OF TROUBLE CODE
Trouble code Contents of diagnosis Ref. to 4-4b
11Start code

Trouble code is shown after start code.

Only start code is shown in normal condition.—
21
Faulty ABS sensor
(Open circuit or short circuit)Front right wheel speed sensor
[T8B0] 23 Front left wheel speed sensor
25 Rear right wheel speed sensor
27 Rear left wheel speed sensor
22
Faulty ABS sensor
(Faulty ABS sensor signal)Front right wheel speed sensor
[T8C0] 24 Front left wheel speed sensor
26 Rear right wheel speed sensor
28 Rear left wheel speed sensor
31
Faulty solenoid valve circuit(s) in hydraulic
unitFront right inlet valve [T8D0]
32 Front right outlet valve [T8E0]
33 Front left inlet valve [T8D0]
34 Front left outlet valve [T8E0]
35 Rear right inlet valve [T8D0]
36 Rear right outlet valve [T8E0]
37 Rear left inlet valve [T8D0]
38 Rear left outlet valve [T8E0]
41 Faulty ABS/TCS control module [T8F0]
42 Source voltage is high.[T8G0]
43 Faulty engine control module communication cables [T8H0]
51 Faulty valve relay[T8I0]
52 Faulty motor, motor sensor and/or motor relay [T8J0]
54 Faulty stroke sensor and/or stop light switch [T8K0]
57 Faulty fluid level sensor[T8L0]
58 Faulty pressure switch[T8M0]
61
Faulty solenoid valve circuit(s) in hydraulic
unitTCS 1 valve [T8D0]
62 TCS 2 valve [T8D0]
35
4-4bBRAKES
8. Diagnostics Chart with Trouble Code

G2M0096
9. Select Monitor Function Mode
Applicable cartridge of select monitor: No. 498349601
A: LIST OF FUNCTION MODE
1. F MODE (ROM ID, ANALOG DATA ARE
DISPLAYED.)
Function code
Measuring
itemsContents to be monitored Scroll Ref. to 4-4b
Code Abbreviation
F00 ROMECM identifi-
cationROM ID number of ECM is read and enabled com-
munication state is displayed.Possible [T9B0]
F01 FRFR wheel
speed (mile/h)Wheel speed detected by the FR wheel speed sen-
sor is displayed in mile/h.Possible [T9C0]
F02 FLFL wheel
speed (mile/h)Wheel speed detected by the FL wheel speed sen-
sor is displayed in mile/h.Possible [T9D0]
F03 RRRR wheel
speed (mile/h)Wheel speed detected by the RR wheel speed sen-
sor is displayed in mile/h.Possible [T9E0]
F04 RLRL wheel
speed (mile/h)Wheel speed detected by the RL wheel speed sen-
sor is displayed in mile/h.Possible [T9F0]
F05 FRFR wheel
speed (km/h)Wheel speed detected by the FR wheel speed sen-
sor is displayed in km/h.Possible [T9C0]
F06 FLFL wheel
speed (km/h)Wheel speed detected by the FL wheel speed sen-
sor is displayed in km/h.Possible [T9D0]
F07 RRRR wheel
speed (km/h)Wheel speed detected by the RR wheel speed sen-
sor is displayed in km/h.Possible [T9E0]
F08 RLRL wheel
speed (km/h)Wheel speed detected by the RL wheel speed sen-
sor is displayed in km/h.Possible [T9F0]
F09 PSSPedal stroke
sensor outputThe number of output steps of the pedal stroke
sensor is displayed.Possible[T9G0]
85
4-4bBRAKES
9. Select Monitor Function Mode

2. FA MODE (ON/OFF DATA ARE DISPLAYED.)
If the system is in normal condition with the engine run at
idle speed (when the brake pedal is off), the LED of EC
(AEC signal) of FA2 will come on, the LED of EM (EAM
signal) blink and all other LED’s go out.
Function code
Measuring
itemsContents to be monitored Scroll Ref. to 4-4b
Code Abbreviation
FA 0OF OFF.SW LED 1 comes on with the OFF switch on.
Possible [T9H0] B1Stop light
switchLED 2 comes on with the switch on (with the brake
pedal down).
VRValve relay
signalLED 3 comes on with the valve relay off.
VMValve relay
monitorLED 4 comes on with the valve relay off.
MRMotor relay
signalLED 5 comes on with the motor on.
MS Motor sensor LED 6 comes on with the motor on.
FSFluid level
sensorLED 7 comes on with the sensor on (the fluid level
is lowered).
FA 1FI FR.IN valveLED 1 comes on when the FR.IN valve is operat-
ing.
Possible [T9I0] RO FR.OUT valveLED 2 comes on when the FR.OUT valve is operat-
ing.
FL FL.IN valve LED 3 comes on when the FL.IN valve is operating.
LO FL.OUT valveLED 4 comes on when the FL.OUT valve is operat-
ing.
T1 TCS1 valve LED 5 comes on when the TCS1 valve is operating.
RI RR.IN valveLED 6 comes on when the RR.IN valve is operat-
ing.
RO RR.OUT valveLED 7 comes on when the RR.OUT valve is operat-
ing.
RI RL.IN valve LED 8 comes on when the RL.IN valve is operating.
LO RL.OUT valveLED 9 comes on when the RL.OUT valve is operat-
ing.
T2 TCS2 valveLED 10 comes on when the TCS2 valve is operat-
ing.
FA 2AWABS warning
lightLED 1 comes on when the warning light is on.
Possible [T9J0] TWTCS warning
lightLED 2 comes on when the warning light is on.
TOTCS OFF
indicator lightLED 3 comes on when the indicator light is on.
TITCS operation
indicator lightLED 4 comes on when the indicator light is on.
EC AEC signalWith the engine run at idle speed, LED 6 (AEC)
comes on and LED 7 (AEB) goes out (They go on
and off depending on the behavior of a vehicle.) EB AEB signal
ET AET signal LED 8 comes on with the TCS control on.
EM EAM signalLED 9 comes on or blinks when the engine control
is enabled.
AT AAT signal LED 10 comes on when ABS control is on.
86
4-4bBRAKES
9. Select Monitor Function Mode

3. FB MODE (TROUBLE CODES ARE DISPLAYED.)
Function code
Measuring
itemsContents to be monitored Scroll Ref. to 4-4b
Code Abbreviation
FB0 D⋅NEWThe most
recent failures
are displayed.Trouble codes, trouble spots and symptoms for the
most recent failure are displayed.Possible [T10B0]
FB1 D⋅ALLHistorical
troubles are
displayed.Trouble codes, trouble spots and symptoms for all
historical failures are displayed.Possible[T10B0]
4. FC MODE (TROUBLE CODES ARE ERASED.)
Function code
Measuring
itemsContents to be monitored Scroll Ref. to 4-4b
Code Abbreviation
FC0 D⋅CLRTrouble codes
are erased.Function of clearing trouble code stored in memory. Possible[T9K0]
5. FD MODE (SEQUENCE CHECK AND AIR RELEASE
MODE)
Function code
Measuring
itemsContents to be monitored Scroll Ref. to
Code Abbreviation
FD1 A⋅CHKABS
sequence
controlPerform ABS sequence control by operating valve
and pump motor sequentially.Impossible4-4
[W20D0]
FD2 T⋅CHKTCS
sequence
controlPerform TCS sequence control by operating the
valve and pump motor sequentially.Impossible4-4
[W20F0]
FD3 AIRAir bleeding
controlManually operate the valve and pump motor to
bleed air.Impossible4-4
[W19A0]
87
4-4bBRAKES
9. Select Monitor Function Mode

Contents Terminal No.Input/Output signal
Measured value and measuring conditions
ABS sensor
(Wheel
speed
sensor)Front left wheel 49—19
0.12—1V
(When it is 20 Hz.) Front right wheel 14—15
Rear left wheel 16—17
Rear right wheel 18—46
Hydraulic
control unitSolenoid
valveFront left outlet 51—1
10—13 V when the valve is OFF and
less than 1.5 V when the valve is ON. Front right outlet 3—1
Rear left outlet 4—1
Rear right outlet 50—1
Front left inlet 24—1
Front right inlet 30—1
Rear left inlet 31—1
Rear right inlet 23—1
Relay boxValve relay power supply 27—110—13 V when ignition switch is ON.
Valve relay coil 47—1 Less than 1.5 V when ignition switch is ON.
Motor relay coil 22—1More than 10 V when the ABS control does not operate still
and less than 1.5 V when ABS operates.
Motor monitoring 10—1Less than 1.5 V when the ABS control does not operate still
and more than 10 V when ABS operates.
G sensor
(AWD
model only)power supply 8—45 4.75—5.25 V
ground 45—
output 7—45 2.3±0.2 V when vehicle is in horizontal position.
Stop light switch 36—1Less than 1.5 V when the stop light is OFF and more than
4.5 V when the stop light is ON.
ABS warning light 54—1Less than 1.5 V during 1.5 seconds when ignition switch is
ON, and 10—14 V after 1.5 seconds.
AT ABS signal
(AT model only)12—1Less than 1.5 V when the ABS control does not operate still
and more than 5.5 V when ABS operates.
ABS operation signal monitor 39—1Less than 1.5 V when the ABS control does not operate still
and more than 5.5 V when ABS operates.
Select
monitorData is received. 11—1 Less than 1.5 V when no data is received.
Data is sent. 38—1 4.75—5.25 V when no data is sent.
Diagnosis
connectorTerminal No. 3 5—110—14 V when ignition switch is ON.
Terminal No. 6 13—110—14 V when ignition switch is ON.
Power supply 28—110—14 V when ignition switch is ON.
Grounding line 1—
Grounding line 55—
8
4-4cBRAKES [ABS 5.3 TYPE]
5. Control Module I/O Signal

8. Diagnostics Chart with Trouble Code
A: LIST OF TROUBLE CODE
Trouble code Contents of diagnosis Ref. to
11Start code

Trouble code is shown after start code.

Only start code is shown in normal condition.—
21
Abnormal ABS sensor
(Open circuit or input voltage too high)Front right ABS sensor
4-4c [T8B0] 23 Front left ABS sensor
25 Rear right ABS sensor
27 Rear left ABS sensor
22
Abnormal ABS sensor
(Abnormal ABS sensor signal)Front right ABS sensor
4-4c [T8C0] 24 Front left ABS sensor
26 Rear right ABS sensor
28 Rear left ABS sensor
29 Any one of four 4-4c [T8D0]
31
Abnormal solenoid valve circuit(s) in
hydraulic unitFront right inlet valve 4-4c [T8E0]
32 Front right outlet valve 4-4c [T8F0]
33 Front left inlet valve 4-4c [T8E0]
34 Front left outlet valve 4-4c [T8F0]
35 Rear right inlet valve 4-4c [T8E0]
36 Rear right outlet valve 4-4c [T8F0]
37 Rear left inlet valve 4-4c [T8E0]
38 Rear left outlet valve 4-4c [T8F0]
41 Abnormal ABS control module 4-4c [T8G0]
42 Source voltage is low. 4-4c [T8H0]
44 A combination of AT control abnormals 4-4c [T8I0]
46 Abnormal G sensor power supply voltage 4-4c [T8J0]
51 Abnormal valve relay4-4c [T8K0]
52 Abnormal motor and/or motor relay 4-4c [T8L0]
54 Abnormal stop light switch 4-4c [T8M0]
56 Abnormal G sensor output voltage 4-4c [T8N0]
27
4-4cBRAKES [ABS 5.3 TYPE]
8. Diagnostics Chart with Trouble Code

G2M0096
9. Select Monitor Function Mode
Applicable cartridge of select monitor: No. 498345700
A: LIST OF FUNCTION MODE
1. F MODE (ROM ID, ANALOG DATA ARE
DISPLAYED.)
Function code
Measuring items Contents to be monitored Scroll Ref. to
Code Abbreviation
F00 ROM ID ECM identificationROM ID number of ECM is read and enabled commu-
nication state is displayed.Possible 4-4c [T9B0]
F01 FRFR wheel speed
(mile/h)Wheel speed detected by the FR ABS sensor is dis-
played in mile/h.Possible 4-4c [T9C0]
F02 FLFL wheel speed
(mile/h)Wheel speed detected by the FL ABS sensor is dis-
played in mile/h.Possible 4-4c [T9D0]
F03 RRRR wheel speed
(mile/h)Wheel speed detected by the RR ABS sensor is dis-
played in mile/h.Possible 4-4c [T9E0]
F04 RLRL wheel speed
(mile/h)Wheel speed detected by the RL ABS sensor is dis-
played in mile/h.Possible 4-4c [T9F0]
F05 FRFR wheel speed
(km/h)Wheel speed detected by the FR ABS sensor is dis-
played in km/h.Possible 4-4c [T9C0]
F06 FLFL wheel speed
(km/h)Wheel speed detected by the FL ABS sensor is dis-
played in km/h.Possible 4-4c [T9D0]
F07 RRRR wheel speed
(km/h)Wheel speed detected by the RR ABS sensor is dis-
played in km/h.Possible 4-4c [T9E0]
F08 RLRL wheel speed
(km/h)Wheel speed detected by the RL ABS sensor is dis-
played in km/h.Possible 4-4c [T9F0]
F09 BLSStop light switch
monitorStop light switch monitor voltage is displayed. Possible 4-4c [T9G0]
F10 G-SENSG sensor output volt-
age (V)Refers to vehicle acceleration detecting by the analog
G sensor. It appears on the select monitor display in
volts.Possible4-4c [T9H0]
111
4-4cBRAKES [ABS 5.3 TYPE]
9. Select Monitor Function Mode

2. FA MODE (ON/OFF DATA ARE DISPLAYED.)
Function code
Measuring items Contents to be monitored Scroll Ref. to
Code Abbreviation
FA 0B1 Stop light switchLED 1 comes on with the switch on (with the brake
pedal down).
Possible 4-4c [T9I0] VR Valve relay signal LED 2 comes on with the valve relay off.
MR Motor relay signal LED 3 comes on with the motor on.
AT AT ABS signal LED 4 comes on when ABS control is on.
AW ABS warning light LED 6 comes on when the warning light is on.
VM Valve relay monitor LED 1 comes on with the valve relay off.
MM Motor relay monitor LED 8 comes on when the motor relay is on.
CM CCM signal LED 9 comes on when ABS control is on.
3. FB MODE (TROUBLE CODES ARE DISPLAYED.)
Function code
Measuring items Contents to be monitored Scroll Ref. to
Code Abbreviation
FB1D⋅ALL
History of trouble
codes is displayed.A maximum of 3 trouble codes are displayed in order
of occurrence.
Possible 4-4c [T10B0] D⋅NEWThe most recent trouble code appears on the select
monitor display.
D⋅MIDThe second most recent trouble code appears on the
select monitor display.
D⋅OLDThe third most recent trouble code appears on the
select monitor display.
B4M0919
NOTE:

If a particular trouble code is not properly stored in
memory (due to a drop in ABSCM power supply, etc.) when
a problem occurs, the trouble code, followed by a question
mark“?”, appears on the select monitor display. This shows
it may be an unreliable reading.

*a* refers to the troubles in order of occurrence (NEW.
MID and OLD).
11 2
4-4cBRAKES [ABS 5.3 TYPE]
9. Select Monitor Function Mode