Component Inspection

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 REFERENCE DATA .

Fig 1: Measuring Resistance Between Terminals Of Input Speed Sensor Connector
Courtesy of HYUNDAI MOTOR CO.
Is resistance within specifications?

[REFERENCE DATA]

REFERENCE DATA

Data	Reference Data
Current	22 mA
Air Gap	Input sensor	1.3 mm
Air Gap	Output sensor	0.85 mm
Resistance	1(red) - 2(black)	Infinite
	1(black) - 2(red)	Approx. 3.89 MΩ
	1(red) - 3(black)	Approx. 6.55 MΩ
	1(black) - 3(red)	Approx. 5.27 MΩ
	2(red) - 3(black)	Approx. 17.5 MΩ
	2(black) - 3(red)	Infinite

YES

Go to 2 as below.

NO

Replace "INPUT SPEED SENSOR" as necessary and refer to VERIFICATION OF VEHICLE REPAIR .

CHECK PCM/TCM
1. Ignition "ON" & Engine "OFF".
2. Connect "INPUT SPEED SENSOR" connector.
3. Install scan tool and sleet a SIMU-SCAN.
4. Simulate frequency to INPUT SPEED SENSOR signal circuit.
  
  Fig 2: Checking PCM/TCM
  Courtesy of HYUNDAI MOTOR CO.
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 refer to VERIFICATION OF VEHICLE REPAIR .
  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 refer to VERIFICATION OF VEHICLE REPAIR .