Tire Pressure Warning Reset Switch Circuit

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Reset Switch Circuit

Tire Pressure Warning Reset Switch Circuit

DESCRIPTION

Initialization can be started by pressing the tire pressure warning reset switch and holding it for 3 seconds or more. If the ECU receives the signal from the switch, the tire pressure warning light blinks 3 times (1 second on, 1 second off).

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
- It is necessary to perform initialization Initialization after registration Registration of the transmitter IDs into the tire pressure warning ECU, after the ECU has been replaced.

PROCEDURE

1. CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION
(a) Perform the tire pressure warning reset switch test in Test Mode Procedure Test Mode Procedure.
OK:
Reset switch ON
Tire pressure warning light comes on.
Reset switch OFF
Tire pressure warning light blinks.
NG -- INSPECT TIRE PRESSURE WARNING RESET SWITCH
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT TIRE PRESSURE WARNING RESET SWITCH




(a) Disconnect the tire pressure warning reset switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE TIRE PRESSURE WARNING RESET SWITCH
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING RESET SW - TIRE PRESSURE WARNING ECU)
(a) Disconnect the tire pressure warning reset switch E45 connector and tire pressure warning ECU E44 connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TIRE PRESSURE WARNING ECU