Low Tire Pressure Indicator Does Not Come On, and No DTCs Are Stored
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
NOTE: Check for gauge DTCs with the HDS. Diagnostic Aids If gauge DTCs are stored, troubleshoot those DTCs first.
1. Turn the ignition switch to ON (II).
2. Check the low tire pressure indicator for several seconds when the ignition switch is turned 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. [1][2]Initial Inspection and Diagnostic Overview If necessary, substitute a known-good gauge control module (tach), Gauge Control Module Replacement and recheck.
3. Test-drive the vehicle at 28 mph (45 km/h) or more for at least 1 minute.
4. Stop the vehicle, and lower the pressure in each tire until the low tire pressure indicator comes on (see table).
NOTE:
- 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.
- If 5 minutes has passed since finishing the last test-drive, reactivate the appropriate tire pressure sensor using the TPMS tool. Tire Pressure Sensor Location
Does the indicator come on when the pressure drops below the specified tire pressure lower limit?
YES - The system is OK at this time.
NO - Go to step 5.
5. Do the tire pressure sensor location procedure to determine the affected tire location and relate it to the tire pressure sensor number. Tire Pressure Sensor Location
Did each tire pressure sensor respond to the TPMS tool?
YES - Go to step 6.
NO - Check that the tire pressure sensor is properly mounted. If necessary, replace the appropriate tire pressure sensor. Service and Repair
6. Check the TIRE 1, TIRE 2, TIRE 3, or TIRE 4 AIR PRESSURE in the TPMS DATA LIST with the HDS, and compare with the actual measured tire pressure.
Is the indicated tire pressure on the HDS within 40 kPa (0.4 kgf/cm2, 6 psi) of the actual tire pressure?
YES - Go to step 7.
NO - Replace the appropriate tire pressure sensor. Service and Repair
7. Turn the ignition switch to LOCK (0).
8. Disconnect the TPMS control unit 20P connector.
9. Measure the voltage between TPMS control unit 20P connector terminals No. 3 and No. 8.
Is there battery voltage?
YES - Repair a short to power in the wire between the TPMS control unit and the No. 10 (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.
