Subaru 2009 IMPREZA Service Manual page 2529

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK VDCCM&H/U MOTOR RELAY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Measure the resistance between
VDCCM&H/U connector terminals.
Terminals
No. 23 — No. 22:
2 CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory. <Ref. to VDC(diag)-24,
Clear Memory Mode.>
3) Perform the Inspection Mode. <Ref. to
VDC(diag)-23, Inspection Mode.>
4) Read the DTC.
3 CHECK OTHER DTC DETECTION.
AG:DTC C0052 MOTOR MALFUNCTION
DTC DETECTING CONDITION:
• Defective motor
• Defective motor relay
• Defective harness connector
TROUBLE SYMPTOM:
• ABS does not operate.
• VDC does not operate.
• EBD may not operate.
NOTE:
For the diagnostic procedure, refer to DTC C0052 "MOTOR/MOTOR RELAY OFF FAILURE". <Ref. to
VDC(diag)-64, DTC C0052 MOTOR AND MOTOR RELAY OFF FAILURE, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Check
Is the resistance 1 M or
more?
Is the same DTC displayed?
Is any other DTC displayed?
VDC(diag)-67
Yes No
Go to step 2. Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Replace the Go to step 3.
VDCCM only.
<Ref. to VDC-9,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Perform the diag- Temporary poor
nosis according to contact occurs.
DTC. <Ref. to
NOTE:
VDC(diag)-33, List
Though the ABS
of Diagnostic Trou-
warning light re-
ble Code (DTC).>
mains on at this
time, this is normal.
Drive the vehicle at
12 km/h (7 MPH)
or more in order to
turn ABS warning
light off. Be sure to
drive the vehicle
and check that the
warning light goes
off.