Kia Sedona (2008 year). Manual - part 119

SCHEMATIC DIAGRAM 

Fig. 118: A/T Relay Circuit Malfunction Diagram 
Courtesy of KIA MOTORS AMERICA, INC. 

MONITOR SCAN TOOL DATA 

1. Connect scan tool to data link connector (DLC).  

2. Ignition "ON" & Engine "OFF".  

3. Monitor the "A/T CON. RELAY VOLT" parameter on the scan tool. 

relay off)  

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:54 PM

Page 135 

© 2006 Mitchell Repair Information Company, LLC. 

Specification: Approx. B+ 

Fig. 119: Scan Tool Display - A/T Con. Relay Volt 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is A/T RELAY VOLT within specifications? 

YES  



Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was 
repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, 
poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as 
necessary and 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 and terminal 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  



Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR" procedure.  

NO  



Go to "POWER CIRCUIT INSPECTION" procedure. 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:54 PM

Page 136 

© 2006 Mitchell Repair Information Company, LLC. 

POWER SUPPLY CIRCUIT INSPECTION 

1. Ignition "ON" & Engine "OFF".  

2. Disconnect the "A/T CONTROL RELAY" connector.  

3. Measure the voltage between terminal "1" of the "A/T CONTROL RELAY" harness connector and 

chassis ground. 

Specification: Approx. B+ 

Fig. 120: Measuring Voltage Between Terminal A/T Control Relay Harness Connector And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is voltage within specifications? 

YES  



Go to "SIGNAL CIRCUIT INSPECTION" procedure.  

NO  



Check that A/T-20A Fuse in engine room junction is installed or not blown.  



Check for Open in harness. Repair as necessary and Go to "VERIFICATION OF VEHICLE 
REPAIR" procedure.  

SIGNAL CIRCUIT INSPECTION 

1. CHECK A/T control relay harness 

1. Ignition "OFF".  

2. Disconnect the "A/T CONTROL RELAY" connector.  

3. Measure the voltage between terminal "4" of the "A/T CONTROL RELAY" harness connector and 

chassis ground.  

4. Turn ignition switch OFF --> ON 

Specification: 12V is measured only for approx. 0.5sec

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:54 PM

Page 137 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 121: Measuring Voltage Between Terminal A/T Control Relay Harness Connector And 
Chassis Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Is voltage within specifications? 

YES  



Go to step 2.  

NO  



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



If signal circuit is OK, Substitute with a known-good PCM/TCM and check for proper 
operation. If the problem is corrected, replace PCM/TCM and then go to "VERIFICATION 
OF VEHICLE REPAIR" procedure.  

2. CHECK Supplying Power to solenoid valve harness 

1. Ignition "OFF".  

2. Disconnect the "A/T CONTROL RELAY" and PCM/TCM connector.  

3. Measure the resistance between terminal "3" of the "A/T CONTROL RELAY" harness connector 

and terminal "60" of the PCM/TCM harness connector. 

Specification: Approx. 0 ohms 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:54 PM

Page 138 

© 2006 Mitchell Repair Information Company, LLC.