Component Inspection

Check MAPS performance

IG "OFF".
Connect CH A probe to terminal 1 of MAPS and CH B probe to terminal 1 of TPS connector.
Warm up the engine to normal operating temperature.

Measure signal waveform of MAPS and TPS together by stepping on and off the accelerator pedal.

Specification : Acceptable temperature range : (23 ± 5) °C

VOLTAGE SPECIFICATION CHART

Pressure [kPa]	20	35	60	95	107
Voltage [V]	0.789 ± 0.045	1.382 ± 0.045	2.369 ± 0.045	3.75 ± 0.045	4.224 ± 0.04

Fig 1: MAPS And TPS Signal Waveform

G06881265

Courtesy of HYUNDAI MOTOR CO.

Is the measured signal waveform (Comparison response of TPS with MAPS) OK?
YES
1. Go to " 2 Check ECM" as follows
NO
1. Substitute with a known - good MAPS and check for proper operation.
  If the problem is corrected, replace MAPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check ECM
1. IG "OFF" and disconnect MAPS connector.
2. Connect scan tool and Key "ON".
3. Select simulation function on scan tool.
4. Simulate voltage at terminal 1 of MAPS signal connector.
  
  Fig 2: Screen Display - MAPS Voltage
  Courtesy of HYUNDAI MOTOR CO.
5. Does the signal value of MAPS change according to simulation voltage?
  YES
  1. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  1. Substitute with a known - good ECM and check for proper operation.
    If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.