Subaru Legacy 2005 Service Manual page 3851

4. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step
1 CHECK POWER SUPPLY FOR COMBINA-
TION METER.
1) Remove the combination meter. <Ref. to
IDI-15, REMOVAL, Combination Meter.>
2) Disconnect the combination meter harness
connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 3, No. 4 (+) — Chassis ground (
2 CHECK POWER SUPPLY FOR COMBINA-
TION METER.
Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 1, No. 2 (+) — Chassis ground (
3 CHECK GROUND CIRCUIT OF COMBINA-
TION METER.
1) Turn the ignition switch to OFF.
2) Measure the resistance of harness
between combination meter connector and
chassis ground.
Connector & terminal
(i10) No. 11, No. 12 — Chassis ground:
5. CHECK ABSCM OR VDCCM
Step
1 CHECK VEHICLE SPEED SIGNAL.
1) Lift up the vehicle and support it with rigid
racks.
2) Drive the vehicle faster than 10 km/h (6
MPH).
Warning:
Be careful not to get caught in the running
wheels.
3) Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 19 (+) — Chassis ground (
2 CHECK HARNESS BETWEEN ABSCM OR
VDCCM AND COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ABSCM or
VDCCM and combination meter.
3) Measure the resistance between ABSCM
or VDCCM harness connector and combina-
tion meter harness connector.
Connector & terminal
Model without VDC
(B301) No. 23 — (i10) No. 19:
Model with VDC
(B310) No. 36 — (i10) No. 19:
Combination Meter System
Is the voltage more than 10 V? Go to step 2.
−
):
Is the voltage more than 10 V? Go to step 3.
−
):
Is the resistance less than 10
Ω?
Is the voltage less than 1 V
←→ 5 V or more?
−
):
Is the resistance less than 10
Ω?
IDI-7
INSTRUMENTATION/DRIVER INFO
Check
Replace the meter
case assembly.
Check
Replace the meter
case assembly.
Model without
VDC: Check the
ABSCM. <Ref. to
ABS(diag)-2,
Basic Diagnostic
Procedure.>
Model with VDC:
Check the
VDCCM. <Ref. to
VDC(diag)-2,
Basic Diagnostic
Procedure.>
Yes No
Check the harness
for open or short
between the igni-
tion switch and
combination
meter.
Check the harness
for open or short
between the fuse
and combination
meter.
Repair the wiring
harness.
Yes No
Go to step 2.
Repair the wiring
harness.