Tire Pressure Warning System Tire Position Not Identified

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

DESCRIPTION

INSPECTION PROCEDURE

IDENTIFY TIRE POSITION FOR EACH TIRE PRESSURE WARNING VALVE AND TRANSMITTER

PERFORM INITIALIZATION

IDENTIFY TIRE POSITION DURING DRIVING

CHECK TIRE PRESSURE WARNING VALVE AND TRANSMITTER

CHECK FREQUENCY RECEIVING CONDITION

TIRE PRESSURE WARNING SYSTEM - Tire Position Not Identified


DESCRIPTION

The tire pressure warning ECU and receiver identifies the tire position for each tire pressure warning valve and transmitter according to the wheel speed signals from the skid control ECU (master cylinder solenoid) and acceleration rate signals from each acceleration sensor built into each tire pressure warning valve and transmitter.

INSPECTION PROCEDURE

NOTICE:
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 one of the valve and transmitters has been replaced.
HINT:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.IDENTIFY TIRE POSITION FOR EACH TIRE PRESSURE WARNING VALVE AND TRANSMITTER

  1. Set the tire pressure to the specified value (Click here).

  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. Display the "ID Tire Inflation Pressure" value for each wheel using the GTS.

    Tire Pressure Monitor
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    ID 1 Tire Inflation Pressure
    		ID1 tire inflation pressure/
    min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
    max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)
    		Actual tire inflation pressure
    		If N/A is displayed, data has not been received.*
    ID 2 Tire Inflation Pressure
    		ID2 tire inflation pressure/
    min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
    max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)
    		Actual tire inflation pressure
    		If N/A is displayed, data has not been received.*
    ID 3 Tire Inflation Pressure
    		ID3 tire inflation pressure/
    min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
    max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)
    		Actual tire inflation pressure
    		If N/A is displayed, data has not been received.*
    ID 4 Tire Inflation Pressure
    		ID4 tire inflation pressure/
    min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
    max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)
    		Actual tire inflation pressure
    		If N/A is displayed, data has not been received.*
    ID 5Tire Inflation Pressure
    		ID5 tire inflation pressure/
    min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
    max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)
    		Actual tire inflation pressure
    		If N/A is displayed, data has not been received.*

    HINT:
    1. *: It may take a few minutes until the values are displayed.
    2. The wheel position cannot be determined from ID1 through ID5 on the Data List.

  1. Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

    NOTICE:
    1. It may take a few minutes until the values are displayed.
    2. When an "ID Tire Inflation Pressure" value has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck the value.

  1. Read the "ID Tire Inflation Pressure" value and identify the tire with reduced pressure, and record the corresponding tire pressure warning valve and transmitter (ID1 to ID5).

  1. Repeat for each tire.

  1. Set the tire pressure to the specified value (Click here).


NEXT


2.PERFORM INITIALIZATION

  1. Leave the vehicle with the engine switch off for 15 minutes or more.

    HINT:
    After the vehicle has been stopped for 15 minutes or more, the tire pressure warning valve and transmitter will transmit radio wave signals more frequently for the first several minutes of driving (4 times more frequent than usual).

  1. Perform initialization to clear the existing tire position information (Click here).


OK


3.IDENTIFY TIRE POSITION DURING DRIVING

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Drive the vehicle at 40 km/h (25 mph) or more for 10 minutes or more in 1 trip.

    HINT:
    Do not drive the vehicle in reverse gear while performing tire position identification. If the vehicle is driven in reverse gear while performing tire position identification, identification information will be discarded and tire position identification may take longer than usual.

  1. Turn left or right at least 3 times within the trip.

  1. Turn the GTS on.

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

  1. Without turning off the engine switch, check the tire position for each transmitter.

    Tire Pressure Monitor
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    ID 1 Tire Position
    		ID1 Tire Position/No Information or FL or FR or RL or RR or Spare or Judging
    		ID1 tire position is displayed
    		If no tire position information is stored, "No Information" will be displayed.
    ID 2 Tire Position
    		ID2 Tire Position/No Information or FL or FR or RL or RR or Spare or Judging
    		ID2 tire position is displayed
    		If no tire position information is stored, "No Information" will be displayed.
    ID 3 Tire Position
    		ID3 Tire Position/No Information or FL or FR or RL or RR or Spare or Judging
    		ID3 tire position is displayed
    		If no tire position information is stored, "No Information" will be displayed.
    ID 4 Tire Position
    		ID4 Tire Position/No Information or FL or FR or RL or RR or Spare or Judging
    		ID4 tire position is displayed
    		If no tire position information is stored, "No Information" will be displayed.
    ID 5 Tire Position
    		ID5 Tire Position/No Information or FL or FR or RL or RR or Spare or Judging
    		ID5 tire position is displayed
    		If no tire position information is stored, "No Information" will be displayed.

    Result:

    Result
    		Proceed to
    A transmitter with its tire position as "Judging" exists.
    		A
    No transmitter with its tire position as "Judging" exists, and no tire pressures are displayed on the multi-information display.
    		B
    No transmitter with its tire position as "Judging" exists, and tire pressures are displayed on the multi-information display.
    		C
    HINT:
    Perform the "Tire Pressure Warning Light Circuit" inspection to check the communication status between the combination meter assembly and tire pressure warning ECU and receiver.


B
GO TO TIRE PRESSURE WARNING LIGHT CIRCUIT INSPECTION PROCEDURE (Click here)

C
END
A


4.CHECK TIRE PRESSURE WARNING VALVE AND TRANSMITTER

  1. Without turning the engine switch off, check each transmitter with its tire position displayed as "Judging".

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

  1. Without turning the engine switch off, check the number of times the transmitter signal and speed sensor signal have synchronized.

    Tire Pressure Monitor (Example: Transmitter ID1 Installed to Front Wheel LH)
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    ID1 - FL Wheel Speed Synchronization Count
    		ID1 - FL Wheel Speed Synchronization Count/min.: 0, max.: 255
    		Actual Synchronization Count
    		-

    OK:
    The transmitter signal and speed sensor signal have synchronized one or more times.


NG
REPLACE CORRESPONDING TIRE PRESSURE WARNING VALVE AND TRANSMITTER (Click here)
OK


5.CHECK FREQUENCY RECEIVING CONDITION

  1. Check that the following conditions are not met:

    1. Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

    2. Devices using similar radio frequencies are used in the vehicle.

      OK:
      Facilities or devices that use similar radio frequencies are not located in the vicinity of the vehicle.
      HINT:
      Radio wave transmissions may be interrupted due to the surroundings or devices installed by the user.


NG
CHECK IF ANY DEVICE IS INSTALLED BY USER
OK

IDENTIFY TIRE POSITION DURING DRIVING AGAIN