Kia Sedona (2008 year). Instruction — part 21

deviation between
measured yaw rate and
the reference yaw rate
calculated from SAS,
lateral G sensor and
wheel speed sensor.
Failure threshold is 7.5
°/s



Inoperative Yaw
Rate & Lateral G
sensor



Open or short of
Yaw Rate &
Lateral G sensor

Case 6

Monitoring Period



After every standstill.

Enable Conditions



The measured yaw rate and
the model yaw rates,
calculated from the wheel
speed sensor and SAS are
compared. If the signals
doesn't fit and forward
driving is recognized, a fault
is determined.

Case 7

Monitoring Period



Continuous (after
initialization of the YRS and
if no under voltage is
detected)

Enable Conditions



The yaw rate sensor BITE
logic evaluates the BITE-
signal by extraction of the
measured yaw rate of the
vehicle. The allowed range
for the BITE-signal is 25 °/s
± 7 °/s. If the BITE-signal is
not in the allowed range, a
suspected failure bit is set
after 200 ms. A failure is set
within 400 ms.

Case 8

Monitoring Period



After YRS-initialization, no
under voltage

Enable Conditions



Depending on the driving
conditions a signal gradient
higher than 10-23 °/s / 40 ms
sets a suspected failure bit
after 280 ms, unless a single
signal peak is recognized by
a peak filter. A failure is set,
if the good check is not
settled successfully after 10
s.

Monitoring Period

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

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MONITOR SCAN TOOL DATA

Refer to DTC C1282.

TERMINAL & CONNECTOR INSPECTION

Refer to DTC C1102.

SIGNAL CIRCUIT INSPECTION

1. Ignition "ON" & Engine "OFF".

2. Measure voltage between terminal "3, 5, 6" of the Yaw Rate & Lateral G sensor harness connector and

chassis ground.

Case 9



Continuous (except spinning,
use of hand brake, unsteady
driving conditions or a
detected under voltage)



Inoperative
HECU

Enable Conditions



During standstill



The allowed range of
the yaw rate sensor
signal is ±30 °s.
Leaving this range for
5 s sets a fault. In case
of driving off after the
failure was present for
longer than 500 ms
during standstill, the
fault is detected
immediately.



While driving



The allowed range of
the yaw rate sensor
signal is ±94.75 °s and
a suspected failure bit
is set, if the signal is
out of this range for
500 ms. A fault is set
after 1 s.

Fail Safe



Reduced controller function.



Inhibit the ESC control and
ABS/EBD control is
available.



The ESC warning lamps are
activated.

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Specification: Approx. 2.5V ( Voltage between terminal "5,6" of the Yaw Rate & Lateral G sensor
harness connector and chassis ground.)

Specification: Approx. above 2.1V and below 2.9V ( Voltage between terminal "3" of the Yaw Rate &
Lateral G sensor harness connector and chassis ground.)

Fig. 52: Measuring Voltage Between Terminal Yaw Rate Lateral Sensor Harness Connector And
Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

3. Is the measured voltage within specifications?

YES



Go to "SELF TEST CIRCUIT INSPECTION" procedure.

NO



Check for open or short in the Yaw Rate & Lateral G sensor harness between terminal "3, 5, 6" of
the Yaw Rate & Lateral G sensor harness connector and terminal "16, 18, 20" of the chassis
ground. Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR"
procedure.



If OK, Substitute with a known-good Yaw Rate & Lateral G sensor and check for proper operation.
If problem is corrected, replace sensor and then go to "VERIFICATION OF VEHICLE
REPAIR" procedure.

COMPONENT INSPECTION

Refer to DTC C1282.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC C1101.

DTC C1503 TCS/ESC SWITCH ERROR

COMPONENT LOCATION

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Fig. 53: Identifying TCS/ESC Switch
Courtesy of KIA MOTORS AMERICA, INC.

GENERAL DESCRIPTION

The driver can deactivate ESC by pressing the ESC switch. The HECU will then activate the ESC warning lamp
and deactivate ESC functions. If the ESC switch is pressed again, ESC functions are restored.

DTC DESCRIPTION

Trouble code is set when the condition that the level of ESC switch is high for 60sec. When the ESC switch
failure is set there is no signal in the warning lamp and ABS/EBD control is available.

DTC DETECTING CONDITION

DTC DETECTING CONDITION CHART

TERMINAL & CONNECTOR INSPECTION

Refer to DTC C1102.

POWER SUPPLY CIRCUIT INSPECTION

1. Ignition "ON" & Engine "OFF" & ESC Switch "ON".

Item

Detecting Condition

Possible cause

DTC strategy



Short circuit monitoring



Open or short ESC switch



Inoperative ESC switch

Monitoring Period



Continuous

Enable Conditions



When the ESC switch is ON
for 60 sec.

Fail Safe



ABS/EBD control is
available. Meanwhile, stop
checking the ESC switch
failure under the ESC
control.

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

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