Test Mode Procedure

HINT:

• When entering the TEST MODE, the tire pressure warning ECU sets all the test DTCs first. After completing the test mode for each inspection item, the DTCs that are determined normal by the tire pressure warning ECU will be erased.

  The DTCs for other inspection items may not be erased when only a certain signal is inspected.

• When the test mode returns back to the normal mode, all the test DTCs will be erased.

1. Turn the ignition switch OFF.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch ON.
4. Check that the tire pressure warning light comes on for 3 seconds and then goes off.
5. Turn the Techstream on.
6. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / Signal Check.
7. Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second intervals.

HINT:

• When entering the signal check, the tire pressure warning ECU sets all the signal check DTCs first. After completing the signal check for each inspection item, the DTCs that are determined normal by the tire pressure warning ECU will be erased. The DTCs for other inspection items may not be erased when only a certain signal is inspected.
• When the signal check returns back to normal mode, all the signal check DTCs will be erased.
  Fig 1: Identifting Tire Pressure Warning Light Blinking Interval

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Make sure that the ignition switch is OFF.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch ON.
4. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / Signal Check.

   HINT:

   Every time the test mode DTC erasure conditions are satisfied, the tire pressure warning light comes on for 1 second. Then, the tire pressure warning light blinks at 0.125 second intervals.

5. Start the engine and allow it to run at 1000 rpm for 3 seconds or more to check the engine speed signal (C2194/94).
6. Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more (C2191/91).
7. Loosen the valve core and rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm² , 5.8 psi) within 30 seconds (C2181/81 to C2185/85).

   HINT:

   The transmitter IDs can be transmitted by rapidly reducing the tire pressure.

8. Result

   HINT:

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

   SIGNAL REFERENCE
   
   

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

9. End of SIGNAL CHECK
   1. After completing the test mode (SIGNAL CHECK), turn the ignition switch OFF and disconnect the Techstream.
10. DTC of SIGNAL CHECK (TEST DIAGNOSIS)
    1. If a trouble code is displayed during the test mode DTC check, check the circuit listed for that code. For details of each code, refer to "See procedure" below.
       DTC CHART
       
       

       DTC No.	Detection Item	Trouble Area
       C2181/81	Transmitter ID1 not received	Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness or connector
       C2182/82	Transmitter ID2 not received	Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness or connector
       C2183/83	Transmitter ID3 not received	Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness or connector
       C2184/84	Transmitter ID4 not received	Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness or connector
       C2185/85	Transmitter ID5 not received	Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness or connector
       C2191/91	Vehicle speed signal error	Vehicle speed sensor Tire pressure warning ECU Combination meter Wire harness or connector
       C2194/94	Engine speed signal error	ECM Combination meter Wire harness or connector Tire pressure warning ECU