Diagnosis System

Warning lamp




The tire pressure warning lamp blinks when there is any malfunction in the tire pressure warning system.

NOTE: When the malfunction has been corrected, the tire pressure warning lamp does not come on.

DTCs (Normal mode)
DTCs are memorized in the tire pressure monitor ECU and read by the blinks of the tire pressure warning lamp or using the hand-held tester (see "DTC Check/Clear" for the procedure of DTCs check).

Test mode
By switching from normal mode into test mode (input signal check), you can inspect the tire pressure monitor receiver assembly, each tire pressure monitor valve sub-assembly and vehicle speed sensor.