Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 541
VDC(diag)-63
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK VDCCM&H/U INPUT VOLTAGE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Run the engine at idle.
4) Measure the voltage between VDCCM&H/U
connector and chassis ground.
Connector & terminal
(B310) No. 28 (+) — Chassis ground (–):
Is the voltage 10 — 15 V?
Repair the power
supply circuit.
2
CHECK VDCCM&H/U GROUND CIRCUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance between
VDCCM&H/U connector and chassis ground.
Connector & terminal
(B310) No. 25 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the
VDCCM&H/U
ground harness.
3
CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact of connec-
tor between generator, battery
and VDCCM&H/U?
Repair the connec-
tor.
4
CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
3) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
4) Read the DTC.
Is the same DTC displayed?
Replace the
VDCCM&H/U.
<Ref. to VDC-8,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
5
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Temporary poor
contact occurs.
VDC(diag)-64
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
W: DTC C0041 ECM
DTC DETECTING CONDITION:
Defective VDCCM&H/U
TROUBLE SYMPTOM:
• ABS does not operate.
• EBD does not operate.
• VDC does not operate.
WIRING DIAGRAM:
Vehicle Dynamics Control System <Ref. to WI-67, Vehicle Dynamics Control System.>
VDCCM & H/U
25
B310
E
B310
4 5 6 7 8 9
26 27 28 29 30
2 3
1
31 32 33 34 35 36
10 11
14 15 16 17 18 19
37 38 39 40
12 13
41 42 43 44 45 46
20 21
23 24
22
25
VDC00464
VDC(diag)-65
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK VDCCM&H/U GROUND CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Measure the resistance between
VDCCM&H/U and chassis ground.
Connector & terminal
(B310) No. 25 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the
VDCCM&H/U
ground harness.
2
CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact of the
connector between the battery,
ignition switch and
VDCCM&H/U?
Repair the connec-
tor.
3
CHECK CAUSE OF SIGNAL NOISE.
Are the radio wave devices and
electronic components
installed correctly?
Install the radio
wave devices and
electronic compo-
nents properly.
4
CHECK CAUSE OF SIGNAL NOISE.
Is there a noise source (such as
an antenna) installed near the
sensor harness?
Install the noise
sources apart from
sensor harness.
5
CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
3) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
4) Read the DTC.
Is the same DTC displayed?
6
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Temporary poor
contact occurs.
VDC(diag)-66
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?
2
CHECK VDCCM IDENTIFICATION SYMBOL.
Check the identification symbol of the seal
attached on the side of the VDCCM. <Ref. to
VDC-2, SPECIFICATION, General Descrip-
tion.>
Is the identification symbol cor-
rect?
3
CHECK VDCCM&H/U IDENTIFICATION
SYMBOL.
Check the identification symbol stamped on the
upper part of the H/U. <Ref. to VDC-2, SPECI-
FICATION, General Description.>
Is the identification symbol cor-
rect?
Replace the
VDCCM&H/U.
<Ref. to VDC-8,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
4
CHECK PARAMETER SELECTED IN VDC-
CM.
<Ref. to VDC(diag)-21, PARAMETER CHECK,
OPERATION, Subaru Select Monitor.>
Does the parameter registered
in the VDCCM match the rele-
vant vehicle?
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст