WHEEL UNIT ID REGISTRATION CANNOT BE PERFORMED

id020300000500

Caution

• Activate the wheel unit ID registration mode using the M-MDS, and perform the following steps if the TPMS warning light does not turn off after driving at 25 km/h {15.5 mph} or more for 10 min or more.

Troubleshooting item

Wheel unit ID registration cannot be performed

Description

•  TPMS warning light flashes

Possible cause

•  New wheel unit malfunction (caused when installing to wheel)

•  Any malfunction on an old wheel unit which has not been replaced.

Troubleshooting item	Wheel unit ID registration cannot be performed
Description	• TPMS warning light flashes
Possible cause	• New wheel unit malfunction (caused when installing to wheel) • Any malfunction on an old wheel unit which has not been replaced.

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

CAN THE WHEEL UNIT ID BE REGISTERED?

•  Connect the M-MDS.

•  Display the wheel unit ID registration condition (ID and tire pressure table) using the M-MDS.

•  Temporarily remove the battery and reinstall it immediately.

Note

•  If the battery is removed, the tire pressure data for WU_1 to WU_4 stored in the instrument cluster is reset.

•  Pressure is 0 kPa {0 kgf/cm², 0 psi}when it is displayed again using the M-MDS.

•  Set tire pressure for the four wheels separately.

•  Perform the wheel unit ID registration again.

•  Can the ID be registered?

Yes

Trouble shooting completed. (Adjust the tire pressure on four wheels, and then return the vehicle to the customer.)

No

Go to the next step.

2

IDENTIFY THE UNREGISTERED WHEEL UNIT

•  Identify the malfunctioning wheel unit. (See MALFUNCTIONING WHEEL UNIT IDENTIFICATION.)

•  Is the wheel unit for which the ID could not be registered a new wheel unit?

Yes

Replace with a new wheel unit, and then go to Step 4.

No

Go to the next step.

3

Replace the old wheel unit, and then go tot the next step (any malfunction on an old wheel unit which has not been replaced).

4

CAN THE WHEEL UNIT ID BE REGISTERED?

•  Perform the wheel unit ID registration using the M-MDS.

Yes

Troubleshooting completed.

No

Verify troubleshooting again and return to Step 1, if the malfunction recurs.

STEP	INSPECTION		ACTION
1	CAN THE WHEEL UNIT ID BE REGISTERED? • Connect the M-MDS. • Display the wheel unit ID registration condition (ID and tire pressure table) using the M-MDS. • Temporarily remove the battery and reinstall it immediately. Note • If the battery is removed, the tire pressure data for WU_1 to WU_4 stored in the instrument cluster is reset. • Pressure is 0 kPa {0 kgf/cm², 0 psi}when it is displayed again using the M-MDS. • Set tire pressure for the four wheels separately. • Perform the wheel unit ID registration again. • Can the ID be registered?	Yes	Trouble shooting completed. (Adjust the tire pressure on four wheels, and then return the vehicle to the customer.)
1		No	Go to the next step.
2	IDENTIFY THE UNREGISTERED WHEEL UNIT • Identify the malfunctioning wheel unit. (See MALFUNCTIONING WHEEL UNIT IDENTIFICATION.) • Is the wheel unit for which the ID could not be registered a new wheel unit?	Yes	Replace with a new wheel unit, and then go to Step 4.
2		No	Go to the next step.
3	Replace the old wheel unit, and then go tot the next step (any malfunction on an old wheel unit which has not been replaced).
4	CAN THE WHEEL UNIT ID BE REGISTERED? • Perform the wheel unit ID registration using the M-MDS.	Yes	Troubleshooting completed.
4		No	Verify troubleshooting again and return to Step 1, if the malfunction recurs.