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Component Inspection

MAPS performance test

IG "OFF"
Connect scantool to Data Link Connector (DLC) and select "Oscilloscope" then, connect probes to output signal lines of MAPS and TPS. Turn engine "ON" and monitor the waveforms accelerating or decelerating

ENG "ON" and monitor signal waveform during acceleration and deceleration.

SPECIFICATION:

VOLTAGE SPECIFICATION CHART

Pressure (kPa)	20	35	60	95	101.32
Voltage (V)	0.789	1.382	2.369	3.75	4
Tolerance (V)	± 0.045

Fig 1: Signal Waveform Graph

G05321936

Courtesy of HYUNDAI MOTOR CO.

Is the waveform displayed correctly? (Compare the response time of TPS and MAPS)
YES
- Go to " 2Check PCM".
NO
- After replacing MAPS with new one, if it operates normally, replace MAPS and go to "VERIFICATION OF VEHICLE REPAIR ".

Check PCM
1. IG "OFF" disconnect MAPS connector
2. Connect Scantool and IG "ON" & NG "OFF"
3. Select simulation function on scantool.
4. Simulate voltage at terminal 1 of MAPS harness connector.
  
  Fig 2: Scan Tool Display - Map
  Courtesy of HYUNDAI MOTOR CO.
5. Does the output voltage response to the change of signal by simulation?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace if necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
  NO
  - 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.
NOTE: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others