April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection

P/S pressure sensor inspection

Key "OFF" and connect the scantool.
Connect the probe to signal line of P/S pressure sensor and select the oscilloscope in menu.

Check the waveform with steering handle movement after engine start.

PRESSURE AND VOLTAGE SPECIFICATION

Pressure(Kgf/cm² )	37.9	41.3	68.8	96.4
Voltage(V)	1	2	3	4

Fig 1: Signal Waveform Graph

G04879917

Courtesy of HYUNDAI MOTOR CO.

Is the measured waveform of P/S pressure sensor normal?
YES
- Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Substitute with a known - good P/S pressure sensor and check for proper operation. If the problem is corrected, replace P/S pressure sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NOTE: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others