Kia Sedona (2008 year). Manual - part 22

2. Measure voltage between terminal "31" of the HECU harness connector and chassis ground. 

Specification: Approx B+ 

Fig. 54: Measuring Voltage Between Terminal Of HECU Harness Connector And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC. 

3. Is the measured voltage within specifications? 

YES  



Fault is intermittent caused by open or short in ESC switch line, inoperative ESC switch or was 
repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.  

NO  



Check for damaged harness and poor connection in the power harness between the battery terminal 
(+) and the terminal "31" of the HECU harness connector. Check for open or blown 10 A fuse 
referring to "Circuit Diagram". Repair as necessary and then go to "VERIFICATION OF 
VEHICLE REPAIR" procedure.  

COMPONENT INSPECTION 

1. Ignition "ON".  

2. Disconnect ESC switch connector.  

3. Press the ESC switch.  

4. Measure resistance between terminal "1" of the ESC switch harness connector and terminal "4" of the 

ESC switch harness connector. 

Specification: Approx. below 1 ohms

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 85 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 55: Measuring Resistance Between Terminal ESC Switch Harness Connector And Terminal 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Is the measured resistance within specifications? 

YES  



Fault is intermittent caused by inoperative ESC switch or was repaired and HECU memory was not 
cleared. Go to the applicable troubleshooting procedure.  

NO  



Substitute with a known-good ESC switch and check for proper operation. If problem is corrected, 
replace ESC switch and then go to "VERIFICATION OF VEHICLE REPAIR" procedure.  

VERIFICATION OF VEHICLE REPAIR 

Refer to DTC C1101. 

DTC C1513 BRAKE SWITCH ERROR 

COMPONENT LOCATION 

Fig. 56: Locating Brake Switch 
Courtesy of KIA MOTORS AMERICA, INC.

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 86 

© 2006 Mitchell Repair Information Company, LLC. 

GENERAL DESCRIPTION 

The brake light switch is a normally closed switch. This switch is mounted on the pedal assembly and is used to 
indicate brake pedal status to the HECU. 

DTC DESCRIPTION 

The brake light signal is a reference to judge driver's intention for braking and The HECU checks open or short 
circuit of brake light switch for normal ABS/ESC control. If an error exists, warning lamp will be turned ON. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

Item

Detecting Condition

Possible cause

DTC strategy



Voltage monitoring  



Open circuit in 
brake switch line  



Inoperative brake 
light switch  



Inoperative HECU  

Case 1

Monitoring Period



Continuous (only no 
under voltage is not 
detected)  

Enable Conditions



If the BLS-signals is 
high for 60 s, while the 
gas pedal is stepped, 
with vehicle speed > 
10.8 km/h, offset 
compensated pressure < 
5 bar and no control is 
active, a fault is set.  

Case 2

Monitoring Period



Continuous (only 
normal voltage)  

Enable Conditions



For redundancy reasons 
an additional 
BLSpVor-signal is 
created by the pressure 
sensor signal. If the 
pressure sensor is 
compensated, the 
threshold for generating 
the BLSpVor signal is 
10 bar. If the pressure 
sensor is not 
compensated, the 
threshold is increased 
by 15 bar. If this signal 
is set without any 
hardware-BLS-signals 
being set for at least 1 

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 87 

© 2006 Mitchell Repair Information Company, LLC. 

MONITOR SCAN TOOL DATA 

1. Connect scan tool to Data Link Connector (DLC).  

2. Ignition "ON" & Engine "ON"  

3. Press the brake pedal.  

4. Monitor the "STOP LAMP SWITCH" parameter on the scan tool. 

Specification: Lateral G sensor: ± 0 G, YAW rate Sensor: ± 0 deg/s 

Fig. 57: Scan Tool Display - EBD Warning Lamp 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Whenever brake pedal is pushed down, is the brake switch's scan tool data changed ON/OFF? 

YES  



Fault is intermittent caused by poor connection in Yaw Rate & Lateral G sensor harness and/or 

s.  



If the pressure signal is 
higher than 80bar and 
not both of the 
hardware-BLS are set, 
a fault is stored after 1 
s.  

Fail Safe



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



The ABS/ESC warning 
lamps are activated.  

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 88 

© 2006 Mitchell Repair Information Company, LLC.