Low Tire Pressure Indicator Does Not Come On, and No DTCs Are Stored

TPMS Symptom Troubleshooting - Low tire pressure indicator does not come on, and no DTCs are stored

Low tire pressure indicator does not come on, and no DTCs are stored

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 -

Do the troubleshooting for the gauge control module Component Tests and General Diagnostics. If necessary, substitute a known-good gauge control module Service and Repair, and recheck.

3. Lower the pressure in each 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 it 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 tire pressure drops below 175 kPa (1.8 kgf/cm2, 25 psi) or less?

YES -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

NO -

Go to step 4.

4. Check the TIRE PRESSURE in the TPMS DATA LIST with the HDS, and compare with 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 -

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.

NO -

Replace the appropriate tire pressure sensor Service and Repair.