VDC(diag)-90
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK OUTPUT OF STOP LIGHT SWITCH
WITH SUBARU SELECT MONITOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Release the brake pedal.
3) Read the stop light switch output in Subaru
Select Monitor.
Is OFF displayed on the dis-
play?
Go to step 2.
Go to step 3.
2
CHECK OUTPUT OF STOP LIGHT SWITCH
WITH SUBARU SELECT MONITOR.
1) Depress the brake pedal.
2) Read the stop light switch output in Subaru
Select Monitor.
Is ON displayed on the dis-
play?
Go to step 5.
Go to step 3.
3
CHECK IF STOP LIGHTS COME ON.
Depress the brake pedal.
Does the stop light illuminate? Go to step 4.
Repair the stop
lights circuit.
4
CHECK OPEN CIRCUIT OF HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from VDCCM&H/
U.
3) Depress the brake pedal.
4) Measure the voltage between VDCCM&H/
U connector and chassis ground.
Connector & terminal
(B310) No. 37 (+) — Chassis ground (
−
):
Is the voltage 10 — 15 V?
Go to step 5.
Repair the har-
ness between stop
light switch and
VDCCM&H/U con-
nector.
5
CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in con-
nector between stop light
switch and VDCCM&H/U?
Go to step 6.
Repair the con-
nector.
6
CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed?
Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 7.
7
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC.
Temporary poor
contact occurs.
Содержание 2004 LEGACY
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