Kia Sedona (2008 year). Manual - part 117

4. Is resistance within specification? 

YES  



Go to step 2.  

NO  



Replace OD SOLENOID VALVE as necessary and go to "VERIFICATION OF 
VEHICLE REPAIR" procedure.  

2. CHECK PCM/TCM 

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

2. Ignition "ON" & Engine "OFF".  

3. Select A/T solenoid valve actuator test and operate actuator test.  

4. Can you hear operating sound for OD SOLENOID VALVE actuator testing function? 

YES  

5. Go to "VERIFICATION OF VEHICLE REPAIR" procedure.  

NO  



Replace PCM/TCM and go to "VERIFICATION OF VEHICLE REPAIR" procedure.  

ACTUATOR TEST CONDITION  

1. IG SWITCH ON  

2. TRANSAXLE RANGE SWITCH is normal  

3. P RANGE  

4. Vehicle Speed 0 mph (0 km/h)  

5. Throttle position sensor < 1V  

6. IDLE SWITCH ON  

7. ENGINE RPM 0  

VERIFICATION OF VEHICLE REPAIR 

Refer to DTC P0750. 

DTC P0770 SHIFT CONTROL SOLENOID VALVE E CIRCUIT MALFUNCTION 

COMPONENT LOCATION 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

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

Page 127 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 112: Identifying Shift Control Solenoid Valve Component Location 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches 
and brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR (Low and 
Reverse Brake), 2ND (2nd Brake), UD (Under Drive Clutch), OD (Over Drive Clutch), REV (Reverse Clutch), 
and a RED (Reduction Brake, only for 5 speed transmissions). 

The RED Brake is engaged in the 1st, 2nd, 3rd gear and reverse gear positions. 

DTC DESCRIPTION 

The TCM checks the Reduction Control Signal by monitoring the feedback signal from the solenoid valve drive 
circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is 
expected, or low voltage is detected when high voltage is expected), the TCM judges that the Reduction control 
solenoid circuit is malfunctioning and sets this code. 

DTC DETECTING CONDITION 

DTC DETECTING CONDITION CHART 

Item

Detecting Condition

Possible cause

DTC Strategy 



Check voltage range  



Open or short in circuit  



Faulty RED SOLENOID 
VALVE  



Faulty PCM/TCM  

Enable Conditions 



16V > Voltage Battery > 
11V  



In gear state (no gear 
shifting) 500 msec is passed 
from turn on the relay  



A/T Relay = ON  



Engine state = RUN  

Threshold value 



Out of available voltage 
range  

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

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

Page 128 

© 2006 Mitchell Repair Information Company, LLC. 

SPECIFICATION 

Refer to DTC P0750. 

SCHEMATIC DIAGRAM 

Refer to DTC P0750. 

SIGNAL WAVEFORM 

Fig. 113: Signal Waveform Graph 
Courtesy of KIA MOTORS AMERICA, INC. 

MONITOR SCAN TOOL DATA 

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

2. Engine "ON".  

3. Monitor the "RED SOL. VALVE" parameter on the scan tool.  

4. Shift gear at each position. 

Diagnostic Time 



More than 5 seconds  

Fail Safe 



Locked in 3rd gear (Control 
relay off)  

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

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

Page 129 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 114: Scan Tool Display - RED Solenoid Duty 
Courtesy of KIA MOTORS AMERICA, INC. 

5. Does "RED SOLENOID DUTY" follow the reference data? 

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, 

 

2008 Kia Sedona EX 

2008 TRANSMISSION Automatic Transaxle System - Sedona

  

Microsoft 

 

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

Page 130 

© 2006 Mitchell Repair Information Company, LLC.