Subaru 2009 IMPREZA, Service Manual

Page: 2516 / 3619

VDC(diag)-54
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
X: DTC C0041 PARAMETER SELECTION ERROR
DTC DETECTING CONDITION:
VDCCM parameter selection error
TROUBLE SYMPTOM:
• ABS does not operate.
• EBD does not operate.
• VDC does not operate.
NOTE:
When the VDCCM or VDCCM&H/U is replaced, this DTC may be stored.
Step Check Yes No
1 CHECK VDCCM&H/U REPLACEMENT HIS-
TORY. Is there history of VDCCM
replacement by itself? Go to step 2 . Go to step 3 .
2 CHECK VDCCM IDENTIFICATION SYMBOL.
Check the identification symbol of the seal
attached on the side of the VDCCM.
AT:
S1
MT:
S5 (WRX-SS)
S2 (except for WRX-SS)
Is the identification symbol cor-
rect? Go to step 4 . Replace the
VDCCM only.
<Ref. to VDC-9,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
3 CHECK VDCCM&H/U IDENTIFICATION
SYMBOL.
Check the identification symbol stamped on the
upper part of the H/U.
AT:
S1
MT:
S5 (WRX-SS)
S2 (except for WRX-SS)
Is the identification symbol cor-
rect? Go to step 4 . Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
4 CHECK PARAMETER SELECTED IN VDC-
CM.
<Ref. to VDC(diag)-18, PARAMETER CHECK,
OPERATION, Subaru Select Monitor.>
Does the parameter registered
in the VDCCM match the rele-
vant vehicle? Replace the
VDCCM only.
<Ref. to VDC-9,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).> Select and register
the correct param-
eter. <Ref. to
VDC(diag)-18,
PARAMETER
SELECTION,
OPERATION, Sub-
aru Select Moni-
tor.>