Low Tire Pressure Indicator/TPMS Indicator Does Not Come On, And No DTCs Are Stored

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Check for gauge DTCs with the HDS (see WIRE COLOR CODES ). If gauge DTCs are stored, troubleshoot those DTCs first.

Turn the ignition switch to ON (II).
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 7.
Test-drive the vehicle at 28 mph (45 km/h) or more for at least 1 minute.
Stop the vehicle, and lower the pressure in each tire until the low tire pressure indicator comes on.
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 (see TIRE PRESSURE SENSOR LOCATION ).
Does the indicator come on when the pressure drops below 175 kPa (1.8 kgf/cm ² , 25 psi) or less?

YES -Intermittent failure, the system is OK at this time.

NO -Go to step 5.
Do the tire pressure sensor location procedure to determine the affected tire location and relate it to the tire pressure sensor number (see 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 (see TPMS CONTROL UNIT REPLACEMENT ).
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/cm ² , 6 psi) of the actual tire pressure?

YES -Go to step 7.

NO -Replace the appropriate tire pressure sensor (see TPMS CONTROL UNIT REPLACEMENT ).
Do the gauge control module self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ).
Is the gauge control module OK?

YES -Go to step 8.

NO -Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
Turn the ignition switch to LOCK (0).
Disconnect the TPMS control unit 20P connector.
Measure the voltage between TPMS control unit 20P connector terminals No. 3 and No. 8.

Fig 1: Measuring Voltage Between TPMS Control Unit 20P Connector Terminals No. 3 And No. 8
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Repair a short to power in the wire between the TPMS control unit and the No. 22 (7.5 A) fuse in the driver's 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 (see TPMS CONTROL UNIT REPLACEMENT ), and recheck.