1997 SUBARU LEGACY high voltage

4-4d
[ryoaio]
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chart
with
Select
Monitor

D
"
NEW
56

G
SENSOR

(FBI)

H
~t

84M0984

AI
:
TROUBLE
CODE
56
G
SENSOR
Hg

-
ABNORMAL
G
SENSOR
HIGH
g
OUTPUT
-

DIAGNOSIS
:

*
Faulty
G
sensor
output
voltage

TROUBLE
SYMPTOM
:

*
ABS
does
notoperate
.

WIRING
DIAGRAM
:

F49

ABS
control
module
and
hydraulic
control
unit

(D
(5

=
1
;3
14151617
R8
F,
TM

QD

r-l
11
213141516171819110111112113114115
1
1161171181191201
122
23242526
27
1
28
1
29
1
30
1
31
1

84M1260
I

P1
P11

-~
~
ABS
G
sensor

198

4. CONDITIONS FOR ABS SEQUENCE CONTROL
B4M1001A
NOTE:

When select monitor is used, control operation starts at
point A. The patterns from IGN key ON to the point A show
that operation is started by diagnosis connector.

HIGH means high voltage.

LOW means low voltage.
86
4-4SERVICE PROCEDURE
15. Hydraulic Unit for ABS System (ABS 5.3 Type)

4. CONDITIONS FOR ABS SEQUENCE CONTROL
B4M1001A
NOTE:

When select monitor is used, control operation starts at
point A. The patterns from IGN key ON to the point A show
that operation is started by diagnosis connector.

HIGH means high voltage.

LOW means low voltage.
129
4-4SERVICE PROCEDURE
22. ABS Control Module and Hydraulic Control Unit (ABSCM&H/U) (ABS 5.3i Type)

B6M0417A
3) Return test
Connect two battery negative leads onto terminal 50 and
onto switch body respectively. Then connect battery posi-
tive lead onto terminal C. Next, disconnect lead from ter-
minal 50. Pinion should return immediately.
2. PERFORMANCE TEST
The starter is required to produce a large torque and high
rotating speed, but these starter characteristics vary with
the capacity of the battery. It is therefore important to use
a battery with the specified capacity whenever testing the
starter.
The starter should be checked for the following three items:
1. No-load test
Measure the maximum rotating speed and current under a
no-load state.
2. Load test
Measure the magnitude of current needed to generate the
specified torque and rotating speed.
3. Stall test
Measure the torque and current when the armature is
locked.
B6M0418A
1) No-load test
Run single starter under no-load state, and measure its
rotating speed, voltage, and current, using the specified
battery. Measured values must meet the following stan-
dards:
No-load test (Standard):
Voltage/Current
11 V/90 A, or more
Rotating speed
TN128000-8311: 3,000 rpm, or more
TN128000-8321: 3,350 rpm, or more
8
6-1SERVICE PROCEDURE
1. Starter

B6M0419A
2) Load test (For reference)
Perform this test to check maximum output of starter. Use
test bench which is able to apply load (brake) to starter.
Measure torque value and rotating speed under the speci-
fied voltage and current conditions while controlling brak-
ing force applied to starter.
CAUTION:
Change engagement position of overrunning clutch
and make sure it is not slipping.
Load test (Standard):
TN128000-8311
Voltage/Load
8 V/9.8 N⋅m (1.0 kg-m, 7.2 ft-lb)
Current/Speed
280 A max./900 rpm min.
TN128000-8321
Voltage/Load
8 V/13.7 N⋅m (1.4 kg-m, 10.1 ft-lb)
Current/Speed
370 A, or less/880 rpm, or more
B6M0420A
3) Stall test
Using the same test equipment used for load test, apply
brake to lock starter armature. Then measure voltage,
current, and torque values.
Measured values must meet the following standard.
Stall test (Standard):
TN128000-8311
Voltage/Current
5 V/800 A, or less
Torque
27.5 N⋅m (2.8 kg-m, 20.3 ft-lb) min.
TN128000-8321
Voltage/Current
5 V/1,050 A, or less
Torque
27.5 N⋅m (2.8 kg-m, 20.3 ft-lb) min.
NOTE:
Low rotating speed or excessive current during no-load test
may be attributable to high rotating resistance of starter
due to improper assembling.
Small current and no torque during stall test may be attrib-
utable to excessive contact resistance between brush and
commutator; whereas, normal current and insufficient
torque may be attributable to shorted commutator or poor
insulation.
Starter can be considered normal if it passes no-load and
stall tests; therefore, load test may be omitted.
9
6-1SERVICE PROCEDURE
1. Starter

B6M0489A
1) Diodes on“+”side
Continuity of proper diodes on“+”side
BAT side
(+) ()
Terminal
N, U, V and W
(+)—Continuity must
not exist.
()Continuity
must exist.—
B6M0490A
2) Diodes on“”side
Continuity of proper diodes on“”side
“E”side
(+) ()
Terminal
N, U, V and W
(+)—Continuity must
exist.
()Continuity
must not exist.—
CAUTION:
Never use a high tension insulation tester, such as a
meggar as it will damage diodes with its high tension.
B6M0491A
5. IC REGULATOR
1) Compose a circuit diagram as shown in figure.


1Voltage meter: 0 to 30 V


2Switch 1


3Variable DC power supply: Variable 0 to 20 V, 1 A or
more


4Lamp 2


5Lamp 1


6Switch 3


7Switch 2


8Plus generator: Power supply 5 to 30 V, 1 kHz
21
6-1SERVICE PROCEDURE
2. Generator

B6M0163
2. WIPER MOTOR
1) Check wiper motor operation at low speed.
Connect battery to wiper motor. Check wiper motor for
proper operation at low speed.
B6M0164
2) Check wiper motor operation at high speed.
Connect battery to wiper motor. Check wiper motor for
proper operation at high speed.
B6M0165
3) Check wiper motor for proper stoppage.
Connect battery to wiper motor. After operating wiper motor
at low speed, disconnect battery to stop it.
B6M0166
4) Reconnect battery and ensure that wiper motor stops at
“AUTO STOP”after operating at low speed.
B6M0111
3. WASHER MOTOR
Apply battery voltage between terminals of washer motor
connector and check that washer motor operates.
27
6-2SERVICE PROCEDURE
10. Front Wiper and Washer

6. CLEAR/RESET EMISSION-RELATED DIAGNOSTIC
INFORMATION (MODE $04)
Refers to the mode used to clear or reset emission-related
diagnostic information (OBD-II trouble diagnostic informa-
tion).
NOTE:
Refer to OBD-II general scan tool manufacturer’s instruc-
tion manual to clear or reset emission-related diagnostic
information (MODE $04).
7. OXYGEN SENSOR MONITORING TEST RESULTS
(MODE $05)
Refers to the mode using oxygen sensor output data while
the on-board diagnosis system is performing diagnosis on
the oxygen sensor.
A list of the support oxygen sensor output data and test ID
(identification) are shown in the following table.
Test ID DataUnit of measure
01 Rich to lean sensor threshold voltage (constant) V
02 Lean to rich sensor threshold voltage (constant) V
03 Low sensor voltage for switch time calculation (constant) V
04 High sensor voltage for switch time calculation (constant) V
05 Rich to lean sensor switch time (calculated) sec.
06 Lean to rich sensor switch time (calculated) sec.
07 Minimum sensor voltage for test cycle (calculated) V
08 Maximum sensor voltage for test cycle (calculated) V
NOTE:
Refer to OBD-II general scan tool manufacturer’s instruc-
tion manual to access oxygen sensor monitoring test
results (MODE $05).
35
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System