Subaru Legacy 2005 Service Manual page 3271

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1
CHECK STOP LIGHT SWITCH CIRCUIT.
Check stop light switch open circuit.
2
CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
3
CHECK OTHER DTC DETECTION.
BI: DTC C0074 PRESSURE SENSOR POWER/OUTPUT
DTC DETECTING CONDITION:
Defective pressure sensor
TROUBLE SYMPTOM:
• ABS does not operate.
• VDC does not operate.
NOTE:
For the diagnostic procedure, refer to DTC C0074 "PRESSURE SENSOR TEST MALFUNCTION". <Ref. to
VDC(diag)-124, DTC C0074 PRESSURE SENSOR TEST MALFUNCTION, Diagnostic Procedure with Di-
agnostic Trouble Code (DTC).>
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Check
Is the stop light switch circuit
OK?
Is the same DTC displayed?
Is any other DTC displayed?
VDC(diag)-127
Yes
Go to step 2.
Repair the stop
light switch circuit.
Replace the
Go to step 3.
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Perform the diag-
Temporary poor
nosis according to
contact occurs.
DTC. <Ref. to
VDC(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
No

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