Check MAPS Performance
WARNING: This page is about a different variant/trim than selected.
- IG "OFF". Connect a GDS and oscilloscope.
- Connect probe to MAPS and TPS to check signal waveform by using oscilloscope function.
- ENG "ON" and monitor signal waveform during acceleration and deceleration.
Specification: Signal waveform will be displayed as follows.
Pressure (kPa) Voltage (V) 20 kPa 0.5 160 kPa 2.5 300 kPa 4.5 - Is the relationship between the MAP and the TPS correct?
YES
- 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.
NO
- 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.