Tire Pressure Warning System Test Mode Procedure

  1. TEST MODE (SIGNAL CHECK MODE) PROCEDURE

Tire Pressure Warning System -- Test Mode Procedure



TEST MODE (SIGNAL CHECK MODE) PROCEDURE
HINT:
  1. When entering test mode (signal check mode), the tire pressure warning ECU and receiver sets all the test mode (signal check mode) DTCs first.
    After the tire pressure warning ECU and receiver completes the signal check for each inspection item, the DTCs for systems that are determined to be normal will be cleared.
    The DTCs for other inspection items may not be cleared when only a certain signal is inspected.
  2. When test mode (signal check mode) returns to normal mode, all the test mode (signal check mode) DTCs will be cleared.
  3. Operation of the tire pressure warning reset switch can be checked in test mode (signal check mode).
  4. During test mode (signal check mode), the system is not initialized by pushing the tire pressure warning reset switch. The circuit of the tire pressure warning reset switch can be inspected during this mode.

  1. Turn the ignition switch off.

  2. Connect the GTS to the DLC3.

  3. Turn the ignition switch ON and the GTS on.



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

    HINT:
    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Tire Pressure Monitoring.Tire Pressure Warning System.Tire Pressure Warning System Test Mode Procedure
    Every time the test mode (signal check mode) DTC clear conditions are satisfied, the tire pressure warning light illuminates for 1 second. Following this, the tire pressure warning light blinks at 0.125 second intervals.
    Text in Illustration
    *a
    		0.125 sec.
    *b
    		ON
    *c
    		OFF

  5. Press the tire pressure warning reset switch (C2198/98).

  6. Wait for 1.5 minutes with the vehicle stopped, or drive the vehicle at a speed of 50 km/h (31 mph) or more for 1 minute (C2181/81 to C2184/84 (C2181/81 to C2185/85: w/ Spare Tire)).

    HINT:
    The tire pressure warning valve and transmitters send signals to the tire pressure warning ECU and receiver once every 1.5 minutes while the vehicle is stopped and once every minute while driving.

  7. Drive the vehicle at a speed of 20 km/h (12 mph) or more for 3 seconds or more to check the vehicle speed signal (C2191/91).

  8. Check that the tire pressure warning system test mode (signal check mode) DTCs are cleared.

    Test Mode (Signal Check Mode) DTC
    		Test Signal
    		Test Mode (Signal Check Mode) DTC Clear Condition
    C2181/81 to C2184/84 (C2181/81 to C2185/85: w/ Spare Tire)
    		Transmitter Data
    		Data is received from the relevant transmitter which has a registered ID in the tire pressure warning ECU and receiver.
    C2191/91
    		Vehicle Speed Signal
    		Vehicle speed of 20 km/h (12 mph) or more is detected for 3 seconds or more.
    C2198/98
    		Tire Pressure Warning Reset Switch Signal
    		A signal is received indicating that the tire pressure warning reset switch is pressed.

  9. Result

    HINT:
    After the signal check is completed, check for test mode (signal check mode) DTCs to confirm the system status.

    Condition
    		Procedure
    Test mode (signal check mode) DTC is output
    		Repair the faulty part and enter Signal Check again
    Test mode (signal check mode) DTCs are cleared
    		No problem

  10. End of test mode (signal check mode)

    1. After completing the test mode (signal check mode), turn the ignition switch off and disconnect the GTS.

  11. Test mode (signal check mode) DTCs

    1. If a trouble code is displayed during the test mode (signal check mode) DTC check, check the diagnosis procedure listed for that code. For details of each code, refer to See page below.

      DTC No.
      		Detection Item
      		See page
      C2181/81
      		Transmitter ID1 not Received
      		LandCruiser RM000000ZUQ0D5X.html
      C2182/82
      		Transmitter ID2 not Received
      		LandCruiser RM000000ZUQ0D5X.html
      C2183/83
      		Transmitter ID3 not Received
      		LandCruiser RM000000ZUQ0D5X.html
      C2184/85
      		Transmitter ID4 not Received
      		LandCruiser RM000000ZUQ0D5X.html
      C2185/85
      		Transmitter ID5 not Received
      		LandCruiser RM000000ZUQ0D5X.html
      C2191/91
      		Vehicle Speed Signal Error
      		LandCruiser RM000000XNA0GTX.html
      C2198/98
      		Initialization Switch
      		LandCruiser RM000004SNQ02KX.html