Kia Sedona (2008 year). Manual - part 189

MONITOR DTC STATUS 

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

2. Ignition "ON" & engine "OFF".  

3. Select "Diagnostic Trouble Codes (DTCs)" mode and monitor "DTC Status" parameter.  

4. Is the DTC B2456 present? 

YES  

Go to TERMINAL AND CONNECTOR INSPECTION procedure. 

NO  

Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and 
ECM 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. 

TERMINAL AND CONNECTOR INSPECTION 

Refer to DTC B1954. 

SIGNAL CIRCUIT INSPECTION 

1. Check for open in harness 

1. Ignition "OFF".  

2. Measure resistance between terminal "11" of IMS and terminal "3" of power seat slide sensor.  

3. Measure resistance between terminal "29" of IMS and terminal "3" of power seat recline sensor.  

4. Measure resistance between terminal "28" of IMS and terminal "3" of front height sensor.  

5. Measure resistance between terminal "10" of IMS and terminal "3" of rear height sensor. 

Specification :Approx. 0 ohms 

Item

Detecting Condition

Possible Cause

DTC Strategy



Check no. of pulse  



Open or short in signal 
harness  



Open or short in power 
harness  



Faulty seat motor/sensor  

Enable Conditions



IGN `ON' & Engine `OFF'  

Threshold value



1V  

Detecting time



1 sec  

FAIL SAFE

-

 

2008 Kia Sedona EX 

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:19:19 PM

Page 225 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 187: Measuring Resistance Between Terminal 10 Of IMS And Terminal 3 Of Rear 
Height Sensor 
Courtesy of KIA MOTORS AMERICA, INC. 

6. Is the measured resistance within specifications? 

YES  

Go to step 2. 

NO  

Check for open in signal harness. Repair as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure. 

2. Check for short in harness 

1. Ignition "OFF".  

2. Disconnect seat sensor (slide, recline, front height, rear height).  

3. Measure resistance between terminal "10, 11, 28, 29" of IMS and chassis ground. 

Specification :Approx. infinity ohms 

Fig. 188: Measuring Resistance Between Terminal 10, 11, 28, 29 Of IMS And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

 

2008 Kia Sedona EX 

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:19:19 PM

Page 226 

© 2006 Mitchell Repair Information Company, LLC. 

4. Is the measured resistance within specifications? 

YES  

Go to "POWER CIRCUIT INSPECTION" procedure. 

NO  

Check for short in signal harness. Repair as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure. 

POWER SUPPLY CIRCUIT INSPECTION 

1. Check for open in harness 

1. Ignition "OFF".  

2. Measure resistance between terminal "6" of IMS and terminal "3" of seat sensor (slide, recline, 

front height, rear height). 

Specification: Approx. 0 ohms 

Fig. 189: Measuring Resistance Between IMS Terminals 
Courtesy of KIA MOTORS AMERICA, INC. 

3. Is the measured resistance within specifications? 

YES  

Go to step 2. 

NO  

Check for open in power harness. Repair as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure.

 

2008 Kia Sedona EX 

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:19:19 PM

Page 227 

© 2006 Mitchell Repair Information Company, LLC. 

2. Check for short in harness 

1. Ignition "OFF"  

2. Disconnect seat sensor (slide, recline, front height, rear height)  

3. Measure resistance between terminal "6" of IMS and chassis ground. 

Specification :Approx. infinity ohms 

Fig. 190: Measuring Resistance Between Terminal 6 Of IMS 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 short in power harness. Repair as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure. 

COMPONENT INSPECTION 

1. Check IMS 

1. Ignition "OFF".  

2. Measure voltage between terminal "6" of IMS and chassis ground. 

Specification: 5V 

 

2008 Kia Sedona EX 

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

  

Microsoft 

 

Monday, May 24, 2010 4:19:19 PM

Page 228 

© 2006 Mitchell Repair Information Company, LLC.