Dtc C2191/91 Vehicle Speed Signal Error (Test Mode Dtc)

Suspension. Land Cruiser. Urj200, 202 Grj200 Vdj200
Tire Pressure Monitoring. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK VEHICLE SPEED SIGNAL (DATA LIST)

CHECK TEST MODE DTC (C2191/91)

DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC)


DESCRIPTION

The tire pressure warning ECU and receiver receives speed signals from the combination meter assembly via CAN communication. This DTC is stored upon entering test mode (signal check mode), and cleared when a vehicle speed signal of 20 km/h (12 mph) is detected for 3 seconds or more. This DTC is output only in test mode (signal check mode).

DTC No.
DTC Detection Condition
Trouble Area
C2191/91
Speed sensor circuit malfunction
  1. CAN communication system
  2. Vehicle speed signal circuit
  3. Combination meter assembly
  4. Tire pressure warning ECU and receiver

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the GTS and write them down before removal.
  2. It is necessary to perform initialization (Click here) after registration (Click here) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.
1.CHECK CAN COMMUNICATION SYSTEM

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Enter the following menus: "CAN Bus Check" from the "System Select" screen.

  1. Check the CAN communication system (for LHD: Click here, for RHD: Click here).

    OK:
    The CAN communication system is normal.
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
GO TO CAN COMMUNICATION SYSTEM (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (Click here)
A


2.CHECK VEHICLE SPEED SIGNAL (DATA LIST)

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

  1. Check that the values indicated on the GTS and on the combination meter assembly are the same.

    Tire Pressure Monitor
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Vehicle Speed
    		Vehicle speed reading/
    min.: 0 km/h (0 mph), max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		Speed indicated on the combination meter assembly

    OK:
    The vehicle speed displayed on the GTS changes depending on the actual vehicle speed.


NG
GO TO METER / GAUGE SYSTEM (Click here)
OK


3.CHECK TEST MODE DTC (C2191/91)

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / Signal Check.

  1. Perform the test mode inspection (Click here).

    Result:
    Result
    		Proceed to
    DTC C2191/91 is not cleared
    		A
    DTC C2191/91 is cleared
    		B


B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER (Click here)