Component Inspection

Check APS.
1. Connect APS and PCM connector.
2. Ignition "ON" & Engine "OFF".
3. Monitor APS 1 and APS 2 signal waveform when stepping on accelerator pedal.
  1. Specification:
    Approx. 0.3~1.0V (when not stepping on the accelerator pedal)
    
    Approx. 4.0~5.5V (when stepping on the accelerator pedal fully)
    
    Fig 1: Monitoring APS 1 And APS 2 Signal Waveform
4. Is the signal waveform within specifications?
  YES
  - Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM "Verification of Vehicle Repair" procedure.
  NO
  - Check APS for contamination, deterioration, or damage. Substitute with a known-good APS and check for proper operation. If the problem is corrected, replace APS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE:
    Procedure of ETS Initialization:
    
    Erase the trouble codes on PCM.
    
    Turn the ignition key on less than 1 second and turn it off (Do not start the engine).
    
    Turn the ignition key off and keep this condition until the main relay is turned off (It will takes 10 seconds).
    
    Turn ignition key on more than 1 second to record the throttle motor position on the EEPROM.