Subaru Legacy 2004 Service Manual page 3144

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AD:DTC C0045 DIFFERENT VDC CONTROL MODULE SPECIFICATION
DTC DETECTING CONDITION:
Different control module specification
TROUBLE SYMPTOM:
• ABS does not operate.
• VDC does not operate.
Step
1 CHECK VDCCM&H/U SPECIFICATION.
Check the identification mark of VDCCM&H/U.
Identification mark of VDCCM&H/U
OUTBACK 3.0 R: G2
Wagon model 2.5 i: G3
Wagon model 3.0 R: G4
Sedan model 2.5 i: G9
Sedan model 3.0 R: GA
2 CHECK TCM SPECIFICATION.
Check the TCM specification.
3 CHECK AT SYSTEM.
1) Start the engine.
2) Check the DTC in AT system.
4 CHECK ECM SPECIFICATION.
Check the ECM specification.
5 CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
6 CHECK OTHER DTC DETECTION.
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Check
Is the identification mark of
VDCCM&H/U the same as
vehicle specification?
Is the specification of TCM
same as vehicle specification?
Is DTC of AT system dis-
played?
Is the specification of ECM
same as vehicle specification?
Is the same DTC displayed?
Is any other DTC displayed?
VDC(diag)-71
Yes
Go to step 2. Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 3. Replace the TCM.
<Ref. to 4AT-65,
Transmission Con-
trol Module
(TCM).> <Ref. to
5AT-61, Transmis-
sion Control Mod-
ule (TCM).>
Repair the AT sys- Go to step 4.
tem.
Go to step 5. Replace the ECM.
<Ref. to FU(H4SO
2.0)-34, Engine
Control Module
(ECM).> <Ref. to
FU(H4DOTC)-35,
Engine Control
Module (ECM).>
<Ref. to
FU(H6DO)-34,
Engine Control
Module (ECM).>
Replace the Go to step 6.
VDCCM&H/U.
Perform the diag- It results from a
nosis according to temporary noise
DTC. interference.
No