System Inspection
- Visual Inspection
- Check the installation condition between MAPS and throttle body.
- Check for cracks in Throttle Body and Throttle Valve Binding.
- Has a problem been found?
YES
- Substitute with a known-good throttle body and check for proper operation. If the problem is corrected, replace throttle body and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to " 2 Check MAPS" as follows.
* Procedure of ETS Initialization
- Erase the trouble codes on PCM
- Turn the ignition key "OFF" until the main relay is turned off. (It will take about 10 sec.)
- Turn ignition key "ON" more than 1 second to record the throttle motor position in the EEPROM
- Check MAPS
- IG "OFF" and install a GDS
- 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 0.79 46.66 1.84 101.32 4.0 - Is the relationship between the MAP and the TPS correct?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Substitute with a known - good MAFS and check for proper operation. If the problem is corrected, replace MAFS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.