Troubleshooting

-	the lamp check should occur and then all lamps / LED's should turn off.

-	If the lamp test does not occur :

• Check connectors and fuse/harnessing - open / short circuits. • Check DTC's. • If diagnostics cannot be entered, replace the receiver with a known good one (follow configuration & learning procedure).

-	Information to ascertain (TREAD Lamp) :

• Was puncture repair fluid used (it should not be)? - This can cause the sensor pressure port to block and incorrect warning to occur. • What temperature were tires last inflated at? At what temperature did warnings occur? - Pressure change is approx. 1.5psi / 10 C increase. • Have the tires been checked / inflated since the lamp first came on?

-	If the TREAD Lamp is on :

• Check for short circuits. • Enter Diagnostics and read TREAD Warnings Local Identifier Data. • Check to see if warning type is under inflation or leak. • If the warning is for under inflation, then: a. Re-inflate the wheel with the matching sensor ID to it's desired Placard pressure. b. Check to make sure that the TREAD lamp turns off (this may take up to 1 minutes if the tire is not rapidly re-inflated). • a. If the warning is for a leak, then: b. Fix any puncture and re-inflate the tire to the desired Placard pressure. Wait up to 1 minutes and make sure that the TREAD lamp turns off and the lamp does not turn on again. c. If lamp comes on again: d. Re-check pressure for signs of a puncture and Re-Check TREAD Warnings Local Identifier Data.

-	If the Placard pressure is OK and the TREAD lamp still does not turn off :

• Turn wheel a quarter turn and again wait 1 minutes (the sensor may be in an RF null). • If the lamp still does not turn off : check for loose receiver wiring and replace the receiver with a known good one if necessary (follow configuration & learning procedure). - If the problem still exists, replace sensor. - Ensure that all tires are inflated to their correct Placard pressures. - Clear TREAD warnings. - Test drive the vehicle and ensure that the TREAD lamp does not come back on.

-	Information to ascertain (DTC Lamp) :

• At what temperature did the DTC occur? Under certain conditions (approx.-40 C/F), a RF channel missing / hardware failure DTC may occur. This is due to the battery behavior.

-	DTC's should be retrieved by using Hi-Scan diagnostic tool.

-	The fault should then be diagnosed and rectified.

-	DTC's should then be cleared.