Low Tire Pressure Indicator Does Not Come On, And No DTCs Are Stored - Without MID

TPMS Symptom Troubleshooting - Low tire pressure indicator does not come on, and no DTCs are stored - without MID

Low tire pressure indicator does not come on, and no DTCs are stored - without MID

1. Turn the ignition switch to ON (II).

2. Check the low tire pressure indicator for several seconds when the ignition switch is turned to ON (II).

Did the indicator come on, and then go off?

YES -

Go to step 3.

NO -

Go to step 5.

3. Lower the pressure in any tire until the low tire pressure indicator comes on.

NOTE:

- If 5 minutes has passed since the ignition switch has been turned to ON (II), turn the ignition switch to LOCK (0), and wait 2 minutes, then turn back ON (II) again.
- Reinflate the tire before continuing to the next tire.
- After noting whether the low tire pressure indicator came on, make sure it goes off when you reinflate the tire before proceeding to the next tire.





Does the indicator come on when the pressure drops below the specified tire pressure lower limit?

YES -

Intermittent failure, the system is OK at this time.

NO -

Go to step 4.

4. Check the TIRE PRESSURE in the TPMS DATA LIST with the HDS, and compare it with the actual measured tire pressure.

NOTE: If UNDEFINED is shown on the sensor transmitter status, turn the ignition switch to LOCK (0), rotate the tire 1/4 turn, then turn the ignition switch to ON (II), and try again. If UNDEFINED is still displayed, repeat this procedure until NORMAL is shown.

Is the indicated tire pressure on the HDS within 40 kPa (0.4 kgf/cm2, 6 psi) of the actual tire pressure?

YES -

Substitute a known-good TPMS control unit Service and Repair, and recheck.

NO -

Replace the appropriate tire pressure sensor Service and Repair.

5. Do the gauge control module self-diagnostic function Testing and Inspection.

Is the gauge control module OK?

YES -

Go to step 6.

NO -

Replace the gauge control module Service and Repair.

6. Turn the ignition switch to LOCK (0).

7. Disconnect the TPMS control unit 20P connector Service and Repair.

8. Measure the voltage between TPMS control unit 20P connector terminals No. 4 and No. 8.





Is there battery voltage?

YES -

Repair short to power in the wire between the TPMS control unit and the No. 8 (7.5 A) fuse in the under-dash fuse/relay box.

NO -

Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit Service and Repair, and recheck.