IG "OFF" and connect GDS.
Measure signal waveform of Vehicle Speed from ESC(ESP) Control Module to ECM while driving.
Specification : Refer to Signal Waveform & Data
Is the measured siganl waveform normal?
![]() | ▶ 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. |
![]() | ▶ Substitute with a known - good ESC(ESP) Control Module and check for proper operation. If the problem is corrected, replace ESC(ESP) Control Module and go to "Verification of Vehicle Repair" procedure. |