Component Inspection

Check "OUTPUT SPEED SENSOR"

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

Fig 1: Measuring Resistance Between Terminal Output Speed Sensor Connectors
Courtesy of HYUNDAI MOTOR CO.

Is resistance within specifications?

OUTPUT SPEED SENSOR REFERENCE DATA

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 step 2.

NO:

Replace "OUTPUT SPEED SENSOR" as necessary and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

CHECK PCM/TCM
1. Ignition "ON" & Engine "OFF".
2. Connect "OUTPUT SPEED SENSOR" connector.
3. Install scan tool and select a SIMU-SCAN.
4. Simulate frequency to OUTPUT SPEED SENSOR signal circuit.
  
  Fig 2: Simulating Frequency To OUTPUT SPEED SENSOR Signal Circuit
  Courtesy of HYUNDAI MOTOR CO.
5. Is "OUTPUT 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.