Subaru LEGACY 2003 Service Manual page 143

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
Step
17 CHECK OPEN CIRCUIT IN G SENSOR OUT-
PUT HARNESS AND GROUND HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM&H/U.
3) Measure resistance between ABSCM&H/U
connector terminals.
Connector & terminal
(F49) No. 6 — No. 28:
Is the measured value within the specified
range?
18 CHECK G SENSOR.
1) Connect connector to G sensor.
2) Connect connector to ABSCM&H/U.
3) Turn ignition switch to ON.
4) Measure voltage between G sensor con-
nector terminals.
Connector & terminal
(R70) No. 2 (+) — No. 3 ( − − − − ):
Is the voltage within th especified range
when G sensor is horizontal?
19 CHECK G SENSOR.
Measure voltage between G sensor connector
terminals.
Connector & terminal
(R70) No. 2 (+) — No. 3 ( − − − − ):
Is the voltage within the specified range when
G sensor is inclined forwards to 90°?
20 CHECK G SENSOR.
Measure voltage between G sensor connector
terminals.
Connector & terminal
(R70) No. 2 (+) — No. 3 ( − − − − ):
Is the voltage within the specifed range when
G sensor is inclined backwards to 90°?
21 CHECK POOR CONTACT IN CONNECTORS.
Turn ignition switch to OFF.
Is there poor contact in connector between
ABSCM&H/U and G sensor?
22 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the DTC.
Is the same DTC still being output?
23 CHECK ANY OTHER DTC APPEARANCE.
Are other DTC being output?
Value
5.0 - 5.6 kΩ
2.1 - 2.5 V
3.7 - 4.1 V
0.5 - 0.9 V
There is no poor contact.
Same DTC is not indicated.
Other DTC is not indicated.
ABS-141
ABS (DIAGNOSTICS)
Yes
Go to step 18. Repair harness/
connector
between G sensor
and ABSCM&H/U.
Go to step 19. Replace G sen-
sor. <Ref. to ABS-
21, G Sensor.>
Go to step 20. Replace G sen-
sor. <Ref. to ABS-
21, G Sensor.>
Go to step 21. Replace G sen-
sor. <Ref. to ABS-
21, G Sensor.>
Go to step 22. Repair connector.
Go to step 23. Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
A temporary poor Proceed with the
contact. diagnosis corre-
sponding to the
DTC.
No