TIRE PRESSURE WARNING SYSTEM TEST MODE PROCEDURE


  1. TEST MODE (SIGNAL CHECK MODE) PROCEDURE

    Tech Tips


    • 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.

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

    • Operation of the tire pressure warning reset switch can be checked in test mode (signal check mode).

    • During test mode (signal check mode), the system will not be 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 power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) and the GTS on.

    4. B003Y4BC02
      *a 0.125 sec.
      *b ON
      *c OFF

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


      Chassis > Tire Pressure Monitor > Utility
      Tester Display
      Signal Check

      Tech Tips

      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.

    5. Press the tire pressure warning reset switch (DTC 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 (DTCs C2181/81 to C2184/84.

      Tech Tips

      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. w/ Tire Inflation Pressure Display Function:

      Perform the tire position check (DTC C2197/97).


      1. During test mode (signal check mode), set the number of times required to turn the engine switch from off to on (IG) in order to return to normal mode 2 times.

      2. After entering test mode, turn the engine switch off and then on (IG) again.

        Note


        • The check cannot be performed if the communication between the tire pressure warning valve and transmitters and the tire pressure warning ECU and receiver is not functioning.

        • When C2197/97 is not cleared, drive the vehicle at a speed of 37 km/h (23 mph) or more for 30 seconds or more.

        Tech Tips

        The DTCs are cleared if the tire positions are determined.

    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 Transmitter Data Data is received from the relevant transmitter which has a registered ID in the tire pressure warning ECU and receiver.
      C2197/97* Tire Position Data A registration ID for each tire is detected.
      C2198/98 Tire Pressure Warning Reset Switch Signal A signal is received indicating that the tire pressure warning reset switch is pressed.

      *: w/ Tire Inflation Pressure Display Function

    9. Result

      Tech Tips

      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) DTCs are 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 test mode (signal check mode), turn the power 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 Link below.

        DTC No. Detection Item Trouble Area Link
        C2181/81 Transmitter ID1 not received

        • Tire pressure warning valve and transmitter

        • Wire harness or connector

        • Tire pressure warning ECU and receiver

        Click here

        C2182/82 Transmitter ID2 not received

        • Tire pressure warning valve and transmitter

        • Wire harness or connector

        • Tire pressure warning ECU and receiver

        Click here

        C2183/83 Transmitter ID3 not received

        • Tire pressure warning valve and transmitter

        • Wire harness or connector

        • Tire pressure warning ECU and receiver

        Click here

        C2184/84 Transmitter ID4 not received

        • Tire pressure warning valve and transmitter

        • Wire harness or connector

        • Tire pressure warning ECU and receiver

        Click here

        C2197/97* Tire position non-decision

        • Front tire pressure monitor initiator

        • Rear tire pressure monitor initiator

        • Tire pressure warning valve and transmitter

        • Tire pressure monitor initiator driver

        Click here

        C2198/98 Initialization switch error

        • Tire pressure warning reset switch

        • Harness or connector

        • Tire pressure warning ECU and receiver

        Click here

        *: w/ Tire Inflation Pressure Display Function