VDC(diag)-99
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK POWER SUPPLY FOR YAW RATE &
G SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from yaw rate & G
sensor.
3) Turn the ignition switch to ON.
4) Measure the voltage between yaw rate & G
sensor and chassis ground.
Connector & terminal
(B230) No. 1 (+) — Chassis ground (–):
Is the voltage 10 — 15 V?
Go to step
2.
Repair the yaw rate
& G sensor power
supply circuit.
2
CHECK YAW RATE & G SENSOR GROUND
CIRCUIT.
Measure the resistance between yaw rate & G
sensor and chassis ground.
Connector & terminal
(B230) No. 4 — Chassis ground:
Is the resistance less than 10
Ω?
Go to step
3.
Repair the yaw rate
& G sensor ground
circuit.
3
CHECK YAW RATE & G SENSOR HARNESS.
1) Disconnect the connector from the
VDCCM&H/U.
2) Measure the resistance between
VDCCM&H/U and yaw rate & G sensor.
Connector & terminal
(B230) No. 3 — (B310) No. 10:
(B230) No. 2 — (B310) No. 35:
Is the resistance less than 1 Ω? Go to step
4.
Repair the harness
between yaw rate
& G sensor and
VDCCM&H/U.
4
CHECK GROUND SHORT CIRCUIT IN YAW
RATE & G SENSOR HARNESS.
Measure the resistance between yaw rate & G
sensor and chassis ground.
Connector & terminal
(B230) No. 2 — Chassis ground:
(B230) No. 3 — Chassis ground:
Is the resistance 1 MΩ or
more?
Go to step
5.
Repair the harness
between yaw rate
& G sensor and
VDCCM&H/U.
5
CHECK YAW RATE & G SENSOR.
1) Turn the ignition switch to OFF.
2) Connect all connectors.
3) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
4) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
5) Read the DTC.
Is the same DTC displayed?
Go to step
6.
Go to step
7.
6
CHECK YAW RATE & G SENSOR.
1) Turn the ignition switch to OFF.
2) Replace the yaw rate & G sensor. <Ref. to
VDC-20, Yaw Rate and G Sensor.>
3) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
4) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
5) Read the DTC.
Is the same DTC displayed?
Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step
8.
7
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC. <Ref. to
VDC(diag)-48, List
of Diagnostic Trou-
ble Code (DTC).>
Temporary poor
contact occurs.