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DTC C1503: TCS Switch Error
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DTC Detecting Condition
DTC C1503: TCS Switch Error: DTC Detecting Condition
DTC DETECTING CONDITION
DTC No
Condition
Possible Cause
C1503
When the TCS/ESC switch is ON for 1 min.
Open/short in TCS/ESC switch circuit.
Faulty TCS/ESC switch
Faulty HECU