Kia Sedona (2008 year). Manual - part 10

Fig. 30: Measuring Resistance Between Terminal "4" Of HECU Harness Connector And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured resistance within specifications? 

YES  



Go to "COMPONENT INSPECTION" procedure.  

NO  



Check for damaged harness and poor connection between terminal "4" of the HECU harness 
connector and chassis ground. Repair as necessary and then go to "VERIFICATION OF 
VEHICLE REPAIR" procedure.  

COMPONENT INSPECTION 

1. Ignition "OFF"  

2. Engine "ON".  

3. Does warning lamp remain On? 

YES  



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

NO  



Fault is intermittent caused by poor connection in power harness (IGN+), inoperative Generator 
and/or inoperative HECU or was repaired and HECU memory was not cleared. Go to the applicable 
troubleshooting procedure.  

VERIFICATION OF VEHICLE REPAIR 

After a repair, it is essential to verify that the fault has been corrected.

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 37 

© 2006 Mitchell Repair Information Company, LLC. 

1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode  

2. Using a scan tool, Clear DTC.  

3. Operate the vehicle within DTC Detecting Condition in General Information  

4. Are any DTCs present? 

YES  



Go to the applicable troubleshooting procedure.  

NO  



System performing to specification at this time.  

DTC C1102 BATTERY VOLTAGE LOW 

COMPONENT LOCATION 

Refer to DTC C1101. 

GENERAL DESCRIPTION 

Refer to DTC C1101. 

DTC DESCRIPTION 

Refer to DTC C1101. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

Item

Detecting Condition

Possible cause

DTC strategy



Battery Voltage 
Monitoring  

Monitoring Period



Continuous (Under 
voltage faults are only 
entered in the EEPROM if 
the vehicle speed is > 6 
km/h.)  



When Vign is lower than 
9.6 V outside ABS/ESC 
control.  



When Vign is lower than 
9.3 V inside ABS/ESC 
control. 

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 38 

© 2006 Mitchell Repair Information Company, LLC. 

MONITOR SCAN TOOL DATA 

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

Case1 (Low voltage)

Enable Conditions



If IGN voltage is 
recovered to 9.8 V, 
the system recovers 
to normal state.  



The monitored 
supply voltage is 
filtered and limited 
to a rise time of 4 
volts per second.  



Poor connection in 
power supply 
circuit (IGN+)  



Inoperative HECU 

Fail Safe



The ABS/ESC functions 
are inhibited.  



The ABS/ESC warning 
lamps are activated.  

Case2 (Under voltage)

Enable Conditions



When Vign is lower than 
7.6 V. 



If IGN voltage is 
recovered to 7.8 V, 
the system recovers 
to normal state.  



Under voltage due 
to low voltage 
glitches is detected 
if unfiltered voltage 
< or = 8.2 V for t > 
or = 20 ms.  



If the voltage is 
recovered to 8.3 V 
for t > 500 ms, the 
system recovers to 
normal state.  



The monitored 
supply voltage is 
filtered and limited 
to a rise time of 4 
volts per second.  

Fail Safe



The ABS/EBD/ESC 
functions are inhibited.  



The ABS/EBD/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 39 

© 2006 Mitchell Repair Information Company, LLC. 

2. Engine "ON".  

3. Monitor the "BATTERY VOLTAGE" parameter on the scan tool. 

Specification: Approx. B+ 

Fig. 31: Scan Tool Display - Engine Speed 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is parameter displayed within specifications? 

YES  



Fault is intermittent caused by poor connection in power harness (IGN+) and/or HECU's connector 
or was repaired and HECU memory was not cleared. Thoroughly check connectors for looseness, 
poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as 
necessary and then go to "VERIFICATION OF VEHICLE REPAIR" procedure  

NO  



Go to TERMINAL & CONNECTOR INSPECTION procedure.  

TERMINAL & CONNECTOR INSPECTION 

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals condition. Faults 

can also be caused by interference from other electrical systems, and mechanical or chemical damage.  

2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, 

deterioration, or damage.  

3. Has a problem been found? 

YES  

 

2008 Kia Sedona 

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

  

Microsoft 

 

Saturday, May 22, 2010 6:52:42 PM

Page 40 

© 2006 Mitchell Repair Information Company, LLC.