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 and/or tire pressure warning valve and transmitter 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:

NG -- INSPECT TIRE PRESSURE WARNING RESET SWITCH
OK -- USE SIMULATION METHOD TO CHECK
2. INSPECT TIRE PRESSURE WARNING RESET SWITCH

(a) Remove the tire pressure warning reset switch Removal.
(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 (RESET SWITCH - ECU AND BODY GROUND)
(a) Disconnect the H52 reset switch connector.
(b) Disconnect the H40 ECU connector.

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