TIRE PRESSURE WARNING SYSTEM > Tire Pressure Warning Reset Switch Circuit

for Preparation Click here


DESCRIPTION

Receiving the signal from the tire pressure warning reset switch, the tire pressure monitor ECU indicates the initialization of the pressure warning system.

WIRING DIAGRAM


C110650E01


INSPECTION PROCEDURE

NOTICE:
It is necessary to register an ID code after replacing the tire pressure monitor valve sub-assembly and/or the tire pressure monitor ECU (Click here).

1.CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION

  1. Perform the tire pressure warning reset switch test in TEST MODE PROCEDURE (Click here).

    OK:
    Reset switch ON:
    Tire pressure warning light comes on.
    Reset switch OFF:
    Tire pressure warning light blinks.



NG
Go to step 2
OK

END 

2.INSPECT TIRE PRESSURE WARNING RESET SWITCH


    C107260E01

  1. Disconnect the tire pressure warning reset switch connector.

  1. Measure the resistance between terminals 1 and 2 of the tire pressure warning reset switch when the tire pressure warning switch is ON and OFF.

    OK:
    Switch Condition
    		Specified Condition
    ON
    		Below 1 Ω
    OFF
    		10 kΩ or higher



NG
REPLACE TIRE PRESSURE WARNING RESET SWITCH
OK


3.CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING RESET SWITCH-TIRE PRESSURE MONITOR ECU)


    C111010E01

  1. Disconnect the tire pressure warning reset switch K15 connector and tire pressure monitor ECU K45 connector.

  1. Measure the resistance according to the value(s) in the table below.

    OK:
    Tester Connection
    		Specified Condition
    K45-2 (CALSW) - K15-1
    		Below 1 Ω
    K45-2 (CALSW) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TIRE PRESSURE MONITOR ECU