Subaru Legacy 2002 Service Manual page 2549

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (Diagnostics)
AE: DTC 45 CONTROL MODULE OUT OF SPECIFICATION
DIAGNOSIS:
¼ Control module out of specification
TROUBLE SYMPTOM:
¼ ABS does not operate.
¼ VDC does not operate.
No.
1 CHECK TCM.
2 CHECK VDCCM SPECIFICATIONS.
Check the VDCCM identification mark.
VDCCM identification mark
H4 ENGINE MODEL
K
OUTBACK H4 ENGINE MODEL
M
OUTBACK H6 ENGINE MODEL
N
3 CHECK TCM SPECIFICATIONS.
Check the TCM identification mark.
TCM identification mark
LHD H4 ENGINE MODEL
YZ
RHD H4 ENGINE MODEL
ZG
LHD OUTBACK H4 ENGINE MODEL
ZB
RHD OUTBACK H4 ENGINE MODEL
ZJ
LHD OUTBACK H6 ENGINE MODEL
ZD
RHD OUTBACK H6 ENGINE MODEL
ZL
4 CHECK TCM.
1) Replace TCM. <Ref. to AT-49, Transmis-
sion Control Module (TCM).>
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
5 CHECK VDCCM.
1) Install original TCM.
2) Replace VDCCM. <Ref. to VDC-9, VDC
Control Module (VDCCM).>
3) Erase the memory.
4) Perform inspection mode.
5) Read out the diagnostic trouble code.
6 CHECK VDCCM.
Step
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Does the VDCCM identifi-
cation mark agree with the
vehicle specifications?
Does the TCM identification
mark agree with the vehicle
specifications?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
VDC-90
Check Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>
S005522J28
No
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
Replace VDCCM.
<Ref. to VDC-9,
VDC Control Mod-
ule (VDCCM).>
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>
The original TCM
has been faulty.
The original
VDCCM has been
faulty.
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.