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DTC C1201/51 Engine Control System Malfunction: Description

If trouble occurs in the engine control system, the ECU prohibits TRAC and VSC control.

DTC CHART

DTC No. DTC Detection Condition Trouble Area
C1201/51 Conditions 1. and 2. continue for 5 sec.:
  1. Engine speed: 500 rpm or more
  2. A trouble signal in the engine control system is input.
Engine control system
  1. CHECK FOR DTC 
    1. Turn the ignition switch ON.
    2. Check that the VSC TRAC warning light turns on.
    3. Check for DTCs.

    Result 

    RESULT REFERENCE

    Result Proceed to
    DTC is output A
    DTC is not output B

    B : END 

    A : REPAIR CIRCUIT INDICATED BY OUTPUT DTC