Test Mode Procedure

HINT

• Operation of the tire pressure warning reset switch (satellite switch) can be checked in Test Mode.
• During Test Mode, the system is not initialized by pushing the tire pressure warning reset switch (satellite switch). The circuit of the tire pressure warning reset switch (satellite switch) can be inspected during this mode.

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3
3. Turn the engine switch on (IG)
4. Turn the Techstream on.
5. Check that the tire pressure warning light comes on for 3 seconds and then goes off
6. Switch the tire pressure warning ECU and receiver to Test Mode. 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

Fig 1: Tire Pressure Light Blinking Pattern

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT

• When entering signal check mode, the tire pressure warning ECU and receiver stores all the signal check DTCs first

  After completing signal check for each inspection item, the DTCs for systems that are determined to be normal by the tire pressure warning ECU and receiver will be cleared

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

• When signal check returns to normal mode, all the signal check DTCs will be cleared.

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. 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.

6. Drive the vehicle at 20 km/h (12 mph) or more for 10 seconds or more to check the vehicle speed signal (C2191/91).
7. Rapidly reduce the tire pressure for each wheel at least 40 kPa (0 4 kg/cm² , 5 8 psi) within 30 seconds to check the transmitter data (C2181/81 to C2184/84).

   HINT

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

8. Turn the tire pressure warning select switch (satellite switch) from off (main) to on (second) and then to off (main) to check the select switch signal (C2192/92)
9. Check that the tire pressure warning system test mode DTCs are cleared.
   TEST MODE DTC CHART
   
   

   Test Mode DTC	Test Signal	Test Mode DTC Erasure Condition
   C2181/81 to C2184/84	Transmitter Data	Data is received from the 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
   C2192/92	Tire Pressure Warning Select Switch	The mode is changed by pressing the tire pressure warning select switch in the following order MAIN → 2nd → MAIN
   C2195/95	Open in tire pressure warning antenna (multi-receiver type)	Voltage of front-right antenna and/or rear-left antenna terminal is below the specified value

10. Check the tire pressure warning reset switch (satellite switch).
    1. Press the tire pressure warning reset switch (satellite switch).
    2. Check the tire pressure warning light
       TIRE PRESSURE WARNING LIGHT REFERENCE
       
       

       Test Signal	Normal Condition
       Tire Pressure Warning Reset Switch (satellite switch)	Switch ON Tire pressure warning light comes on Switch OFF Tire pressure warning light blinks at 0 125 second intervals

11. Result

    HINT:

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

    RESULT CHART
    
    

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

12. End of SIGNAL CHECK
    1. After completing the test mode (SIGNAL CHECK), turn the engine switch off and disconnect the Techstream
13. 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.
       DIAGNOSTIC TROUBLE CODE CHART
       
       

       DTC Code	Detection Item	Trouble Area
       C2181/81	Transmitter ID1 not Received (Test Mode DTC)	Tire pressure warning valve and transmitter Tire pressure warning select switch (satellite switch) Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver
       C2182/82	Transmitter ID2 not Received (Test Mode DTC)	Tire pressure warning valve and transmitter Tire pressure warning select switch (satellite switch) Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver
       C2183/83	Transmitter ID3 not Received (Test Mode DTC)	Tire pressure warning valve and transmitter Tire pressure warning select switch (satellite switch) Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver
       C2184/84	Transmitter 1D4 not Received (Test Mode DTC)	Tire pressure warning valve and transmitter Tire pressure warning select switch (satellite switch) Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver
       C2191/91	Vehicle Speed Signal Error (Test Mode DTC)	Multiplex communication system Vehicle speed sensor Combination meter assembly Wire harness or connector Tire pressure warning ECU and receiver
       C2192/92	Select Switch Error (Test Mode DTC)	Tire pressure warning select switch (satellite switch) Tire pressure warning ECU and receiver Combination meter Wire harness or connector
       C2195/95	Multi-receiver Antenna Circuit (Test Mode DTC)	Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver