Component Inspection

C1503 TCS/ESC (ESP) Switch error

Inspection/Repair - Component Inspection

Component Inspection

ESC (ESP) switch Check
1. IG "OFF".
2. Disconnect the ESC (ESP) switch connector.
3. Measure resistance between power terminal and signal terminal of the ESC (ESP) switch connector.
4. Measure waveform between signal terminal of the wheel speed sensor harness connector and chassis ground with oscilloscope.

Specification : Approx. below 1 Ohms - (In case of pressing the ESC (ESP) switch)
Approx. Infinity Ohms - (In case of not pressing the ESC (ESP) switch)




5. Is the measured resistance within specifications?