DTC C1503 ESC Switch Error: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Circuit Monitoring	Open or short ESC switch circuit Faulty ESC switch
Enable Conditions	When the ESC switch is ON for 1 minute.
Fail Safe	Inhibit the ESC control and allow the ABS/EBD control. The ESC warning lamp is activated.