Subaru Legacy 2002 Service Manual page 2662

DIAGNOSTICS CHART WITH SELECT MONITOR
No.
9 CHECK OPEN CIRCUIT IN CONTROL CIR-
CUIT OF RELAY BOX.
1) Turn ignition switch to OFF.
2) Disconnect connector (F90) from relay box.
3) Measure resistance between relay box
connector and valve relay installing point.
Connector & terminal
(VDC4) No. 5 — Valve relay installing
point No. 85:
(VDC4) No. 1 — Valve relay installing
point No. 86:
10 CHECK GROUND SHORT IN CONTACT
POINT CIRCUIT OF RELAY BOX.
Measure resistance between relay box con-
nector and chassis ground.
Connector & terminal
(VDC4) No. 5 — Chassis ground:
(VDC4) No. 1 — Chassis ground:
11 CHECK OPEN CIRCUIT IN CONTROL SYS-
TEM HARNESS OF VALVE RELAY.
1) Turn ignition switch to OFF.
2) Disconnect connector from VDCCM.
3) Measure resistance between VDCCM con-
nector and relay box connector.
Connector & terminal
(F87) No. 47 — (F90) No. 5:
(F87) No. 27 — (F90) No. 1:
12 CHECK GROUND SHORT IN CONTROL
SYSTEM HARNESS OF VALVE RELAY.
Measure resistance between VDCCM connec-
tor and chassis ground.
Connector & terminal
(F87) No. 47 — Chassis ground:
(F87) No. 27 — Chassis ground:
13 CHECK OPEN CIRCUIT IN CONTACT
POINT CIRCUIT OF RELAY BOX.
Measure resistance between VDCH/U con-
nector and valve relay installing point.
Connector & terminal
(VDC1) No. 2 — Valve relay installing
point No. 30:
14 CHECK GROUND SHORT IN CONTACT
POINT CIRCUIT OF RELAY BOX.
Measure resistance between VDCH/U con-
nector and chassis ground.
Connector & terminal
(VDC1) No. 2 — Chassis ground:
15 CHECK RESISTANCE OF INLET AND CUT
SOLENOID VALVES.
1) Disconnect connector from VDCH/U.
2) Measure resistance between VDCH/U con-
nector terminals.
Connector & terminal
(VDC5) No. 8 — (VDC2) No. 2:
(VDC5) No. 5 — (VDC2) No. 2:
(VDC5) No. 6 — (VDC2) No. 2:
(VDC5) No. 7 — (VDC2) No. 2:
(VDC5) No. 9 — (VDC2) No. 2:
(VDC5) No. 12 — (VDC2) No. 2:
Step
Is the resistance less than
0.5 Ω?
Is the resistance more than
1 MΩ?
Is the resistance less than
0.5 Ω?
Is the resistance more than
1 MΩ?
Is the resistance less than
0.5 Ω?
Is the resistance more than
1 MΩ?
Is the resistance between
8.04 and 9.04 Ω?
VDC-203
Check Yes
Go to step 10.
Go to step 11.
Go to step 12.
Go to step 13.
Go to step 14.
Go to step 15.
Go to step 16.
VDC (Diagnostics)
No
Replace relay
box.
Replace relay box
and check fuse
SBF6.
Repair harness
between VDCCM
and relay box.
Repair harness
between VDCCM
and relay box.
Replace relay
box.
Replace relay box
and check fuse
No. 8.
Replace VDCH/U.
<Ref. to VDC-11,
Hydraulic Control
Unit (H/U).>