Component Inspection

WARNING: This page is about a different variant/trim than selected.

■ Input speed sensor waveform Inspection

Connect "A/T solenoid valve" connector and Scantool to Data Link Connector (DLC).
Engine ON and operate Input speed sensor.
Measure waveform between signal of Input speed sensor harness and chassis ground.
Specification: See specific waveform below.

Fig 1: Measuring Waveform Between Signal Of Input Speed Sensor Harness And Chassis Ground
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: Identifying Input And Output Speed Sensor Connector Terminals
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured waveform within specifications?
YES
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair as necessary and go to "VERIFICATION VEHICLE REPAIR " procedure.
NO
- Go to "PCM/TCM Inspection" procedure below.

■ PCM/TCM Inspection

Ignition "ON" & Engine "OFF".
Disconnect ATM solenoid valve connector.
Connect scantool to Data Link Connector (DLC) and select Simulation mode.
Input specific frequency to signal of Input speed sensor by simulation mode.

Fig 3: Scantool Display - Input Specific Frequency To Signal Of Input Speed Sensor (150Hz → 248rpm)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 4: Scantool Display - Input Specific Frequency To Signal Of Input Speed Sensor (250Hz → 413rpm)
Courtesy of HYUNDAI MOTOR AMERICA

ⓧ The values are subject to change according to vehicle model or conditions.
Is measured Input speed sensor value changed by input frequency?
YES
- Substitute with a known-good Input speed sensor 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 and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.