WHEEL UNIT ID REGISTRATION CANNOT BE PERFORMED [DIRECT TIRE PRESSURE MONITORING SYSTEM (TPMS)]

id020305000500

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 {16 mph} or more for 3 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.

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

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.
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

PERFORM WHEEL UNIT ID REGISTRATION

•  Perform the wheel unit ID registration.
(See WHEEL UNIT ID REGISTRATION.)

•  Can the ID be registered?

Yes

Symptom troubleshooting completed.

Explain to the customer what has been repaired.

No

Go to the next step.

2

IDENTIFY UNREGISTERED WHEEL UNIT

•  Identify the malfunctioning wheel unit.

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

Yes

Replace with a new wheel unit, then perform the repair completion verification.

(See WHEEL UNIT REMOVAL/INSTALLATION [(E)].)

No

Replace the old wheel unit, then perform the repair completion verification (any malfunction on an old wheel unit which has not been replaced).

(See WHEEL UNIT REMOVAL/INSTALLATION [(E)].)

Repair completion verification

PERFORM WHEEL UNIT ID REGISTRATION

•  Perform the wheel unit ID registration again.
(See WHEEL UNIT ID REGISTRATION.)

•  Can the ID be registered?

Yes

Symptom troubleshooting completed.

No

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

Step	Inspection	Results	Action
1	PERFORM WHEEL UNIT ID REGISTRATION • Perform the wheel unit ID registration. (See WHEEL UNIT ID REGISTRATION.) • Can the ID be registered?	Yes	Symptom troubleshooting completed. Explain to the customer what has been repaired.
1		No	Go to the next step.
2	IDENTIFY UNREGISTERED WHEEL UNIT • Identify the malfunctioning wheel unit. • Is the wheel unit for which the ID could not be registered a new wheel unit?	Yes	Replace with a new wheel unit, then perform the repair completion verification. (See WHEEL UNIT REMOVAL/INSTALLATION [(E)].)
2		No	Replace the old wheel unit, then perform the repair completion verification (any malfunction on an old wheel unit which has not been replaced). (See WHEEL UNIT REMOVAL/INSTALLATION [(E)].)
Repair completion verification	PERFORM WHEEL UNIT ID REGISTRATION • Perform the wheel unit ID registration again. (See WHEEL UNIT ID REGISTRATION.) • Can the ID be registered?	Yes	Symptom troubleshooting completed.
Repair completion verification		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1.