DTC 33

DTC 31, 33, 35, 37: Tire Pressure Sensor Low Battery Voltage

NOTE: This problem occurs when the temperature around the sensor is -40°F (-40°C) or lower. Note that the diagnosis must be made in a place where ambient temperature is -4°F (-20°C) or higher.

1. Turn the ignition switch ON (II).

Does the TPMS indicator go off within 1 minute?

YES - The system is OK at this time. Clear the DTC with the HDS.

NO - Go to step 2.

2. Read the tire pressure sensor voltage with the HDS.

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





Is the sensor transmitter battery low?

YES - Replace the appropriate tire pressure sensor.

NO - Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit and recheck.