ON-BOARD DIAGNOSTIC SYSTEM FUNCTION (TIRE PRESSURE MONITORING SYSTEM)

id020200100200

Malfunction Detection Function

• The malfunction detection function detects malfunctions in the input/output signal system of the tire pressure monitoring system (TPMS) control module based on abnormal signals from the wheel units when the ignition switch is in the ON position or driving the vehicle.
• The TPMS warning light illuminates for approx. 3.0 s when the ignition switch is turned to the ON position to inspect for open circuits in the light.

Malfunction Indication Function

• When the malfunction detection function detects a malfunction, the TPMS warning light illuminates to advise the driver. Using the external tester communication function, DTCs can be output to the DLC-2 via the CAN communication line. At the same time, malfunction detection results are sent to the memory functions.

Memory Function

• The memory function stores DTCs for malfunctions in input/output signal systems. With this function, once a DTC is stored it is not cleared after the ignition switch has been turned off (LOCK position), even if the malfunctioning signal system has returned to normal.
• Since instrument cluster has a built-in non-volatile memory, DTCs are not cleared even if the battery is removed. Therefore, it is necessary to clear the memory after performing repairs. Refer to the Workshop Manual for the DTC clearing procedure.

DTC Table

Malfunction location | DTC | TPMS warning light illumination condition | TPMS warning light illumination pattern
--- | --- | --- | ---
Instrument cluster | B1342 | Illuminated |
Non-volatile memory failure | B2143 | Illuminated |
System configuration malfunction | B2477 | Illuminated |
Wheel unit 1 internal fault | B2868 | Illuminated |
Wheel unit 2 internal fault | B2869 | Illuminated
Wheel unit 3 internal fault | B2870 | Illuminated
Wheel unit 4 internal fault | B2871 | Illuminated
Lost communication with keyless receiver | U0127 | Illuminated |
Wheel unit 1 communication malfunction | U2616 | Illuminated |
Wheel unit 2 communication malfunction | U2617 | Illuminated
Wheel unit 3 communication malfunction | U2618 | Illuminated
Wheel unit 4 communication malfunction | U2619 | Illuminated