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DTC C1503: TCS/ESC (ESP) 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.
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