Dtc C2179/79 Tire Pressure Monitor Ecu Communication Stop

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 C2179/79 Tire Pressure Monitor ECU Communication Stop


DESCRIPTION

The tire pressure warning ECU and receiver receives speed signals from the combination meter assembly via CAN communication.

DTC No.
DTC Detection Condition
Trouble Area
C2179/79
Tire pressure warning ECU and receiver communication disruption.
  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).

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


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).

  1. 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
    DTCs C2191/91 is cleared
    		A
    DTC C2191/91 is not cleared
    		B


B
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER (Click here)
A

CHECK FOR INTERMITTENT PROBLEMS (Click here)