Inspection Procedure

1. Check if the vehicle is not located in areas such as described below:
   1. Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

      HINT:

      If the vehicle is located in areas described above, the tire pressure warning light may come on only in a particular area.

   2. Devices using similar radio frequencies are used in the vehicle.

      OK: 

      Facilities, or devices that use similar radio frequencies are not located in the vicinity of the vehicle. 

      HINT:

      Radio frequency may be interrupted due to surroundings or devices installed by the user.

NG: CHECK IF ANY DEVICE IS INSTALLED BY USER 

OK: Go to Next Step 

1. Set the tire pressure to the appropriate specified values.

   Cold tire inflation pressure 

   TIRE SPECIFICATION
   
   

   Tire size	Front kPa (kgf/cm2 , psi)	Rear kPa (kgf/cm2 , psi)
   P215/60R16	200 (2.0, 29)	200 (2.0, 29)
   P215/55R17	220 (2.2, 32)	220 (2.2, 32)

2. Make sure that the ignition switch is off.
3. Connect the intelligent tester to the DLC3.
4. Turn the ignition switch on (IG).
5. Select "TIREPRESS" by following the prompts displayed on the intelligent tester.

   TIRE PRESSURE: 

   TIRE SPECIFICATION
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   TIREPRESS1	ID1 tire inflation pressure/min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
   TIREPRESS2	ID2 tire inflation pressure/min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
   TIREPRESS3	ID3 tire inflation pressure/min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
   TIREPRESS4	ID4 tire inflation pressure/min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
   TIREPRESS5	ID5 tire inflation pressure/min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm2 , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
   HINT: *: It may take about 2 or 3 minutes until the values are displayed.

6. Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.41 kg/cm² , 5.8 psi) within 30 seconds.
7. Check the DATA LIST.
   NOTE:

   • It takes about 2 or 3 minutes to display the updated tire pressure data.
   • When no "TIREPRESS" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck it.
   • Record the transmitter ID of which "TIREPRESS" data corresponds to each tire.
8. After confirming that one of "TIREPRESS" data for one tire (ID1 to ID5) has changed, repeat this procedure one by one. Identify the transmitter that corresponds to DTC.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   One or more of transmitters abnormal	A
   All normal	B
   All abnormal	C

A:  Go to step  4

B: END 

C: Go to Next Step 

1. Disconnect the D54 ECU connector.
2. Disconnect the K36 receiver connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   D54-12 (RDA) - K36-1 (RDA)	Always	Below 1 Ω
   D54-11 (GND2) - K36-4 (GND)
   D54-6 (RF5V) - K36-5 (+5V)
   D54-12 (RDA) - Body ground		10 kΩ or higher
   D54-11 (GND2) - Body ground
   D54-6 (RF5V) - Body ground

Fig 1: Identifying D54 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Make sure that the ignition switch is off.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch on (IG).
4. Select REGIT ID CODE by following the prompts displayed on the intelligent tester.

   TIRE PRESSURE: 

   TIRE PRESSURE SPECIFICATION
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   REGIT ID1 CODE	Registered ID1 code/min.: 0, max.: FFFFFF*	The ID No. registered in the transmitter ID1 is displayed	*: Displayed only when the ID No. is not registered.
   REGIT ID2 CODE	Registered ID2 code/min.: 0, max.: FFFFFF*	The ID No. registered in the transmitter ID2 is displayed	*: Displayed only when the ID No. is not registered.
   REGIT ID3 CODE	Registered ID3 code/min.: 0, max.: FFFFFF*	The ID No. registered in the transmitter ID3 is displayed	*: Displayed only when the ID No. is not registered.
   REGIT ID4 CODE	Registered ID4 code/min.: 0, max.: FFFFFF*	The ID No. registered in the transmitter ID4 is displayed	*: Displayed only when the ID No. is not registered.
   REGIT ID5 CODE	Registered ID5 code/min.: 0, max.: FFFFFF*	The ID No. registered in the transmitter ID5 is displayed	*: Displayed only when the ID No. is not registered.

5. Check the ID number on the identified transmitter by removing it from the tire and wheel.
   Fig 2: Identifying Tire Pressure Warning Valve And Transmitter Location

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Confirm that the ID number on the transmitter and recorded transmitter ID match.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Match	A
   Do not match	B

B:  Go to step  6

A: Go to Next Step 

1. Replace the tire pressure warning valve and transmitter (See REMOVAL ).

1. Perform registration (See REGISTRATION ).

1. Perform initialization (See INITIALIZATION ).

1. Make sure that the ignition switch is off.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch on (IG).
4. Select "TIREPRESS" by following the prompts displayed on the intelligent tester.

TIRE PRESSURE: 

Result 

A: END 

B: Go to Next Step 

1. Replace the tire pressure warning antenna and receiver (See REMOVAL ).

1. Make sure that the ignition switch is off.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch on (IG).
4. Select "TIREPRESS" by following the prompts displayed on the intelligent tester.

TIRE PRESSURE: 

Result 

B: REPLACE TIRE PRESSURE WARNING ECU  (See REMOVAL )

A: END