Component Inspection

Brake

ESC (MGH-40) (~2009.12.20) - C1503 ESC switch error - Component Inspection

Component Inspection

ESC switch Check
1. Ignition "ON" & Engine "OFF".
2. Disconnect the ESC switch connector.
3. Measure resistance between power terminal and signal terminal of the ESC switch connector.
A. Specification : Approx. below 1 Ohms (In case of pressing the ESC switch)
Approx. Infinity Ohms (In case of not pressing the ESC switch)




4. Is the measured value within specifications?
YES
1) Fault is intermittent caused by poor connection in ESC switch harness and/or HECU's connector.
Go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known-good ESC switch and check for proper operation.
If problem is corrected, replace ESC switch and then go to "Verification of Vehicle Repair" procedure.