Kia Sedona (2008 year). Manual - part 103

Fig. 59: Identifying Gear 4 Incorrect Ratio Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

The value of the input shaft speed should be equal to the value of the output shaft speed, when multiplied by the 
4th gear ratio, while the transaxle is engaged in the 4th gear. For example, if the output speed is 1,000 RPM and 
the 4th gear ratio is 1.233, then the input speed is 1,233 RPM. 

DTC DESCRIPTION 

This code is set if the value of input shaft speed is not equal to the value of the output shaft, when multiplied by 
the 4th gear ratio, while the transaxle is engaged in 4th gear. This malfunction is mainly caused by mechanical 
troubles such as control valve sticking or solenoid valve malfunctioning rather than an electrical issue. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

Item

Detecting Condition

Possible cause

DTC Strategy 



4th gear incorrect ratio  



Faulty Input speed sensor  



Faulty output speed sensor  



Faulty UD clutch or 2nd 
brake  

Enable Conditions 



Engine speed > 450 RPM  



Output speed > 300 RPM  



Shift stage 4th. gear  



Input speed > 0 RPM  



A/T oil temp output > or = -
23°C(-9.4°F)  



11V < or = Battery Voltage < 
or = 16V  



TRANSAXLE RANGE 
SWITCH is normal and above 
2 sec is passed from IG ON  



| input speed - output speed x 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:53 PM

Page 71 

© 2006 Mitchell Repair Information Company, LLC. 

SIGNAL WAVEFORM 

Fig. 60: Signal Waveform Graph 
Courtesy of KIA MOTORS AMERICA, INC. 

MONITOR SCAN TOOL DATA 

Go to "SIGNAL CIRCUIT INSPECTION" procedure. 

OPERATING ELEMENT OF EACH SHIFTING RANGE 

OPERATING ELEMENT OF EACH SHIFTING RANGE 

Low & Reverse Brake is released when vehicle speed over the 5 MPH (7 km/h) 

SIGNAL CIRCUIT INSPECTION 

Threshold value 

4th gear ratio | > or = 200 
RPM  

Diagnostic Time 



More than 4 sec  

Fail Safe 



Locked into 3rd gear  

GEAR 

POSITION

ELEMENT

L/R 

BRAKE

2ND 

BRAKE

U/D 

CLUTCH

O/D 

CLUTCH

RED 

BRAKE

DIR 

CLUTCH

REV 

CLUTCH 0WC1 0WC2

1st

o

 

o

 

o

 

 

•

•

2nd

 

o

o

 

o

 

 

 

•

3rd

 

 

o

o

o

 

 

 

•

4th

 

o

 

o

o

 

 

 

•

5th

 

o

 

o

 

o

 

 

 

REV

o

 

 

 

o

 

o

 

 

N, P

o

 

 

 

o

 

 

 

 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:53 PM

Page 72 

© 2006 Mitchell Repair Information Company, LLC. 

1. Connect scan tool.  

2. Engine "ON".  

3. Monitor the "INPUT & OUTPUT SPEED SENSOR" parameter on the scan tool.  

4. Accelerate the Engine speed until about 2000 RPM in the 4th gear. 

Specification: INPUT SPEED - (OUTPUT SPEED x GEAR RATIO) < or = 200 RPM 

Fig. 61: Scan Tool Display - Engine RPM 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Is "INPUT & OUTPUT SPEED SENSOR" within specifications? 

YES  



Go to "COMPONENT INSPECTION" procedure.  

NO  



Check for electrical noise of circuit in INPUT & OUTPUT SPEED SENSOR or Replace INPUT & 
OUTPUT SPEED SENSOR. Repair as necessary and Go to "VERIFICATION OF VEHICLE 
REPAIR" procedure.  

COMPONENT INSPECTION 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:53 PM

Page 73 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 62: Identifying Connect Oil Pressure Gauge To "2nd" And "OD" Port 
Courtesy of KIA MOTORS AMERICA, INC. 

1. Connect oil pressure gauge to "2ND" and "OD" and "RED" port.  

2. Engine "ON".  

3. Drive a car with gear position 4 in "SPORTS MODE".  

4. Compare it with reference data . 

Specification: refer to DTC P0731. 

5. Is oil pressure value within specifications? 

YES  



Repair AUTO TRANSAXLE (Clutch or Brake) as necessary and Go to "VERIFICATION OF 
VEHICLE REPAIR" procedure.  

NO  



Replace AUTO TRANSAXLE (BODY CONTROL VALVE faulty) as necessary and Go to 
"VERIFICATION OF VEHICLE REPAIR" procedure.  

VERIFICATION OF VEHICLE REPAIR 

Refer to DTC P0731. 

DTC P0735 GEAR 5 INCORRECT RATIO 

COMPONENT LOCATION 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

Monday, May 24, 2010 3:47:53 PM

Page 74 

© 2006 Mitchell Repair Information Company, LLC.