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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
1
CHECK GROUND CIRCUIT OF VDCCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from VDCCM&H/
U.
3) Measure the resistance between
VDCCM&H/U and chassis ground.
Connector & terminal
(B310) No. 6 — Chassis ground:
2
CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in con-
3
CHECK SOURCES OF SIGNAL NOISE.
4
CHECK SOURCES OF SIGNAL NOISE.
5
CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
6
CHECK OTHER DTC DETECTION.
AA:DTC C0042 POWER VOLTAGE MALFUNCTION
DTC DETECTING CONDITION:
Defective VDCCM&H/U power voltage
TROUBLE SYMPTOM:
• ABS does not operate.
• EBD may not operate.
• VDC does not operate.
NOTE:
Warning lights go off if voltage returns.
Check
Is the resistance less than 0.5
Ω?
nectors between battery, igni-
tion switch and VDCCM&H/U?
Are the radio wave devices and
electric components installed
correctly?
Are noise sources (such as an
antenna) installed near the
sensor harness?
Is the same DTC displayed?
Is any other DTC displayed?
VDC(diag)-64
Yes
Go to step 2.
Repair the
VDCCM&H/U
ground harness.
Repair the con-
Go to step 3.
nector.
Go to step 4.
Install the radio
wave devices and
electric compo-
nents properly.
Install the noise
Go to step 5.
sources apart from
sensor harness.
Replace the
Go to step 6.
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Perform the diag-
Temporary poor
nosis according to
contact occurs.
DTC. <Ref. to
VDC(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
No
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