Component Inspection

WARNING: This page is about a different car, the 2007 Kia Optima, 2007 Kia Magentis, 2006 Kia Optima, and 2006 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.

Check "INPUT SPEED SENSOR"

Ignition "OFF".
Disconnect the "INPUT SPEED SENSOR" connector.
Measure resistance between terminal "1","2" and "2","3" and "1","3" of the "INPUT SPEED SENSOR" connector.
Specification: Refer to "DATA REFERENCE CHART "

Fig 1: Measuring Resistance Between Input Speed Sensor Connector Terminal
Courtesy of KIA MOTORS AMERICA, INC.

Is resistance within specifications?

[REFERENCE DATA]

DATA REFERENCE CHART

Data	Reference Data
Current	22 mA
Air Gap	Input sensor	1.3 mm
Air Gap	Output sensor	0.85 mm
Resistance	Input sensor	Above 4 MΩ
Resistance	Output sensor	Above 4 MΩ
Voltage	High	4.8 ~ 5.2V
Voltage	Low	Below 0.8V

YES : --> Go to 2 "CHECK PCM" as below.

no : --> Replace "INPUT SPEED SENSOR" as necessary and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

CHECK PCM
1. Ignition "ON" & Engine "OFF".
2. Connect "INPUT SPEED SENSOR" connector.
3. Install scantool and select a SIMU-SCAN.
4. Simulate frequency to INPUT SPEED SENSOR signal circuit.
  
  Fig 2: Display Screen Of - SIMU-SCAN
  Courtesy of KIA MOTORS AMERICA, INC.
5. Is "INPUT SPEED SENSOR" signal value changed according to simulation frequency?
  YES : --> 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.
  
  no : --> Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.