Component Inspection
- Check TPS
- IG "ON"
- Monitor signal waveform of TPS by stepping on and off the accelerator pedal on GDS.
Specification:
VOLTAGE SPECIFICATIONThrottle Opening (°) Output Voltage (V) (Vref=5.0) TPS1 TPS2 0° 0.0V 5.0V 10° 0.5V 4.5V 20° 0.9V 4.1V 30° 1.4V 3.6V 40° 1.8V 3.2V 50° 2.3V 2.7V 60° 2.7V 2.3V 70° 3.2V 1.8V 80° 3.6V 1.4V 90° 4.1V 0.9V 100° 4.5V 0.5V 110° 5.0V 0.0V Fig 1: Scantool Display - Normal Waveform Of TPS1 & TPS2 With No Accel Pedal Depressed Under IG ON ConditionCourtesy of KIA MOTORS AMERICA, INC.
- Is the measured signal waveform O.K?
YES
- 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 GDS 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.
NO
- Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (After replacing ETC, do initialization of ETC as follows)
* Procedure of ETS Initialization
- Erase the trouble codes on PCM
- Turn the ignition key off and keep this condition until the main relay is turned off. (It will take 10 sec.)
- Turn ignition key on more than 1 second to record the throttle motor position on the EEPROM
- 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.