4.
Measure signal waveform of MAPS and TPS together by actuating the throttle.
Specification : Signal waveform will be displayed as follows.
IG "OFF". Connect a GDS and oscilloscope.
Connnect CH A probe to signal terminal of TPS and CH B probe to signal terminal of MAPS connector.
Warm up the engine to normal operating temperature.
Measure signal waveform of MAPS and TPS together by actuating the throttle.
Specification : Signal waveform will be displayed as follows.
Is the measured signal waveform(Comparison response of TPS with MAPS) O.K ?
 | ▶ 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. |
 | ▶ 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. |
