Kia Sedona (2008 year). Instruction — part 95

Fig. 28: Input Speed Sensor Diagram - No Signal
Courtesy of KIA MOTORS AMERICA, INC.

SIGNAL WAVEFORM

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

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© 2006 Mitchell Repair Information Company, LLC.

Fig. 29: 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 "INPUT SPEED SENSOR" parameter on the scan tool.

4. Driving at speed of over 19 MPH (30 Km/h).

Specification: Increasing Gradually

Fig. 30: Scan Tool Display - NT (Input Speed)
Courtesy of KIA MOTORS AMERICA, INC.

5. Does "Input speed sensor" follow the reference data?

YES



Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

Page 40

© 2006 Mitchell Repair Information Company, LLC.

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 may be caused from poor harness and terminal condition.

These faults can 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 go to "VERIFICATION OF VEHICLE REPAIR" procedure.

NO



Go to "SIGNAL CIRCUIT INSPECTION" procedure.

SIGNAL CIRCUIT INSPECTION

1. Ignition "ON" & Engine "OFF".

2. Disconnect the "INPUT SPEED SENSOR" connector.

3. Measure voltage between terminal "2" of the INPUT SPEED SENSOR harness connector and chassis

ground.

Specification: approx. 5V

Fig. 31: Measuring Voltage Between Terminal Input Speed Sensor Harness Connector And Chassis
Ground
Courtesy of KIA MOTORS AMERICA, INC.

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

Page 41

© 2006 Mitchell Repair Information Company, LLC.

4. Is voltage within specification?

YES



Go to "POWER CIRCUIT INSPECTION" procedure.

NO



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



If signal circuit in harness is OK, Go to step 2.

POWER SUPPLY CIRCUIT INSPECTION

1. Ignition "ON" & Engine "OFF".

2. Disconnect the "INPUT SPEED SENSOR" connector.

3. Measure voltage between terminal "3" of the INPUT SPEED SENSOR harness connector and chassis

ground.

Specification: approx. B+

Fig. 32: Measuring Voltage Between Terminal Input Speed Sensor Harness Connector And Chassis
Ground
Courtesy of KIA MOTORS AMERICA, INC.

4. Is voltage within specification?

YES



Go to "GROUND CIRCUIT INSPECTION" procedure.

NO



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

2008 Kia Sedona EX

2008 TRANSMISSION Automatic Transaxle System - Sedona

Microsoft

Monday, May 24, 2010 3:47:52 PM

Page 42

© 2006 Mitchell Repair Information Company, LLC.