Tire Pressure Warning System Test Mode Procedure

Suspension & Axle. Lexus Gs430, Gs300. Uzs190 Grs190
Tire And Wheel. Lexus Gs430, Gs300. Uzs190 Grs190

  1. ENTER TEST MODE

  1. PERFORM SIGNAL CHECK

Tire Pressure Warning System -- Test Mode Procedure



ENTER TEST MODE
HINT:
  1. Operation of the tire pressure warning reset switch can be checked in TEST MODE.
  2. During TEST 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.


    Lexus Gs430, Gs300. Uzs190 Grs190.Tire And Wheel.Tire And Wheel System.Tire Pressure Warning System Test Mode Procedure

  1. Make sure that the engine switch is off.

  2. Connect the intelligent tester to DLC3.

  3. Turn the engine switch on (IG).

  4. Select the TEST MODE on intelligent tester.

  5. Perform tire pressure warning reset switch test.

    1. Press the tire pressure warning reset switch.

    2. Check the tire pressure warning indicator light.

      Test Signal
      		Normal Condition
      Tire Pressure Warning Reset Switch
      1. Switch ON: TPWS indicator comes on
      2. Switch OFF: TPWS indicator blinks

PERFORM SIGNAL CHECK
HINT:
  1. When entering signal check, the tire pressure monitor ECU sets all the signal check DTCs first.
    After completing signal check for each inspection item, the DTCs that are determined normal by the tire pressure monitor ECU will be erased.
    The DTCs for other inspection items may not be erased when only a certain signal is inspected.
  2. When signal check returns back to normal mode, all the signal check DTCs will be erased.


    Lexus Gs430, Gs300. Uzs190 Grs190.Tire And Wheel.Tire And Wheel System.Tire Pressure Warning System Test Mode Procedure

  1. Make sure that the engine switch is off.

  2. Connect the intelligent tester to DLC3.

  3. Turn the engine switch on (IG).



  4. Select the SIGNAL CHECK on intelligent tester.


    Lexus Gs430, Gs300. Uzs190 Grs190.Tire And Wheel.Tire And Wheel System.Tire Pressure Warning System Test Mode Procedure

  5. Drive the vehicle at 12mph (20 km/h) or more for 10 seconds or more.

  6. Loosen the valve core and rapidly reduce the pressure (20 kPa above/15 sec.).

    HINT:
    The transmitter ID can be transmitted by rapidly reducing the tire pressure.

  7. Check that the tire pressure warning system test mode DTCs are erased.

    SIGNAL CHECK DTC
    		Test Signal
    		Signal Check DTC Clear Condition
    C2181 to C2184
    		Transmitter Data
    		Receive DATA from the transmitter which has a registered ID in TPWS ECU
    C2191
    		Vehicle Speed Signal
    		Vehicle speed of 12 mph (20 km/h) or more is detected for 3 seconds or more
    C2192
    		Tire Select Switch
    		Change the mode by pressing the tire select switch in the following order: MAIN→2nd→MAIN

  8. Result

    HINT:
    After the signal check is completed, check for a DTC and signal check DTC to confirm the system status.

    Condition
    		Procedure
    SIGNAL CHECK DTC is output
    		Repair the faulty part and enter SIGNAL CHECK again
    SIGNAL CHECK DTCs are cleared
    		No problem

  9. End of SIGNAL CHECK

After completing test mode (SIGNAL CHECK), turn the engine switch off and disconnect the tester.
DTC of SIGNAL CHECK (TEST DIAGNOSIS) function:
If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code. For details of each code, refer to the relevant page listed under respective "DTC No." in the chart.

DTC No.
Detection Item
Trouble Area
C2181/81
(Click here)
Transmitter ID1 not received
  1. Tire pressure monitor receiver assembly
  2. Each tire pressure monitor valve sub-assembly
  3. Tire select switch
  4. Tire pressure monitor ECU
  5. Wire harness
C2182/82
(Click here)
Transmitter ID2 not received
  1. Tire pressure monitor receiver assembly
  2. Each tire pressure monitor valve sub-assembly
  3. Tire select switch
  4. Tire pressure monitor ECU
  5. Wire harness
C2183/83
(Click here)
Transmitter ID3 not received
  1. Tire pressure monitor receiver assembly
  2. Each tire pressure monitor valve sub-assembly
  3. Tire select switch
  4. Tire pressure monitor ECU
  5. Wire harness
C2184/84
(Click here)
Transmitter ID4 not received
  1. Tire pressure monitor receiver assembly
  2. Each tire pressure monitor valve sub-assembly
  3. Tire select switch
  4. Tire pressure monitor ECU
  5. Wire harness
C2191/91
(Click here)
Vehicle speed signal error
  1. Vehicle speed sensor
  2. Combination meter assembly
  3. Tire pressure monitor ECU
  4. Wire harness
C2192/92
(Click here)
Tire select switch malfunctions
  1. Tire pressure warning switch
  2. Tire pressure monitor ECU
  3. Wire harness