Dtc C1201 Engine Control System Malfunction


DESCRIPTION

INSPECTION PROCEDURE

CHECK ENGINE TYPE

CHECK ENGINE CONTROL SYSTEM

CHECK ENGINE CONTROL SYSTEM

CHECK ENGINE CONTROL SYSTEM

DTC C1201 Engine Control System Malfunction


DESCRIPTION

If a malfunction is detected in the engine control system, the ECM sends a malfunction signal to the skid control ECU. The skid control ECU stores this DTC and prohibits the following controls:
  1. VSC
  2. TRC
  3. Downhill assist control
  4. Crawl control
  5. Multi-terrain select control

DTC Code
DTC Detection Condition
Trouble Area
C1201
A malfunction signal is received from the ECM.
Engine control system

INSPECTION PROCEDURE

1.CHECK ENGINE TYPE

  1. Check the engine type.

    Result
    Result
    		Proceed to
    1GR-FE
    		A
    1KD-FTV
    		B
    1GD-FTV
    		C



B
Go to step 3

C
Go to step 4
A


2.CHECK ENGINE CONTROL SYSTEM

  1. Check if an engine control system DTC is output (LandCruiser RM000000PDK1DIX.html).

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



B
GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (LandCruiser RM000002ZSO015X.html)
A

REPLACE ECM (LandCruiser RM00000329203TX.html)

3.CHECK ENGINE CONTROL SYSTEM

  1. Check if an engine control system DTC is output (LandCruiser RM000000PDK1DJX.html).

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



B
GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (LandCruiser RM0000031HW07LX.html)
A

REPLACE ECM (LandCruiser RM0000013Z002CX.html)

4.CHECK ENGINE CONTROL SYSTEM

  1. Check if an engine control system DTC is output (for 1GD-FTV (w/ Urea SCR System): LandCruiser RM000000PDK1E5X.html, for 1GD-FTV: LandCruiser RM000000PDK1ENX.html).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output (for 1GD-FTV (w/ Urea SCR System))
    		B
    DTC is output (for 1GD-FTV)
    		C



B
GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (LandCruiser RM0000031HW07OX.html)

C
GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) (LandCruiser RM0000031HW07PX.html)
A

REPLACE ECM (LandCruiser RM0000013Z002DX.html)