TIRE PRESSURE WARNING SYSTEM TEST MODE PROCEDURE

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.
w/ Tire Inflation Pressure Display Function:

Operation of the tire pressure warning reset switch can be checked in test mode (signal check mode).
w/ Tire Inflation Pressure Display Function:

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.

Turn the power switch off.
Connect the Techstream to the DLC3.
Turn the power switch on (IG) and the Techstream on.

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

Tech Tips

Every time the test mode (signal check mode) DTC clear conditions are satisfied, the tire pressure warning light illuminated for 1 second. Following this, the tire pressure warning light blinks at 0.125 second intervals.

Text in Illustration
*a	0.125 sec.
*b	ON
*c	OFF

w/ Tire Inflation Pressure Display Function:

Press the tire pressure warning reset switch (DTC C2198/98).
Wait for 1.5 minutes with the vehicle stopped, or drive the vehicle for 1 minute (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.

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.
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

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) DTC is output	Repair the faulty part and enter Signal Check again
Test mode (signal check mode) DTCs are cleared	No problem

End of test mode (signal check mode)
1. After completing the test mode (signal check mode), turn the power switch off and disconnect the Techstream.

Test mode (signal check mode) DTCs

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 See page below.

DTC No.	Detection Item	Trouble Area	See page
C2181/81	Transmitter ID1 not received	Tire pressure warning valve and transmitter Harness or connector Tire pressure warning ECU and receiver	Click here
C2182/82	Transmitter ID2 not received	Tire pressure warning valve and transmitter Harness or connector Tire pressure warning ECU and receiver	Click here
C2183/83	Transmitter ID3 not received	Tire pressure warning valve and transmitter Harness or connector Tire pressure warning ECU and receiver	Click here
C2184/84	Transmitter ID4 not received	Tire pressure warning valve and transmitter Harness or connector Tire pressure warning ECU and receiver	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