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2008 - MX-5 - Suspension

NO.4 WHEEL UNIT ID REGISTRATION CANNOT BE PERFORMED (TPMS WARNING LIGHT FLASHES)

CAUTION:



3

Wheel unit ID registration cannot be performed (TPMS warning light flashes)

POSSIBLE CAUSE

  • New wheel unit malfunction (caused when install to the wheel).

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


Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY REGISTRATION OF WHEEL UNIT
  • Connect the M-MDS to the DLC-2.

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

    (See WHEEL UNIT ID REGISTRATION.)

  • Temporarily remove the battery and reinstall it immediately.

    NOTE:

    • If the battery is removed, the tire pressure data for WU1_P to WU4_P stored in the instrument cluster is reset.

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

  • Set the tire pressure for the four wheels separately.

  • Perform the “WHEEL UNIT ID REGISTRATION” using the M-MDS again.

    (See WHEEL UNIT ID REGISTRATION.)

  • Can the wheel unit ID be registered?

Yes

Symptom troubleshooting completed.

Adjust the tire pressure on four wheels, then return the vehicle to the customer.

(See TIRE PRESSURE ADJUSTMENT (WITH TPMS).)

No

Go to the next step.

2

IDENTIFY UNREGISTERED WHEEL UNIT

Yes

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

(See WHEEL UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

3

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

(See WHEEL UNIT REMOVAL/INSTALLATION.)

4

VERIFY REGISTRATION OF WHEEL UNIT
  • Perform the “WHEEL UNIT ID REGISTRATION” using the M-MDS.

    (See WHEEL UNIT ID REGISTRATION.)

  • Can the wheel unit ID be registered?

Yes

Symptom troubleshooting completed.

No

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




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