Lexus ES: System Diagram
SYSTEM DIAGRAM
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HINT:
Each tire pressure warning valve and transmitter sends its transmitter ID, temperature and tire pressure information to the tire pressure warning ECU and receiver.
| Transmitting ECU (Transmitter) | Receiving ECU | Signal | Communication Method |
|---|---|---|---|
| Combination Meter Assembly | Main Body ECU (Multiplex Network Body ECU) | Vehicle speed signal | CAN communication line |
| Main Body ECU (Multiplex Network Body ECU) | Combination Meter Assembly | Tire pressure warning light signal | CAN communication line |
| Skid Control ECU (Brake Actuator Assembly) | Tire Pressure Warning ECU and Receiver | Speed sensor signal | CAN communication line |
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the tire pressure warning system.
Make sure that the wireless door lock control system has exited diagnostic mode before
Operation Check
OPERATION CHECK CHECK TIRE PRESSURE WARNING SYSTEM FUNCTION (a) Using the Data List, check that the current tire pressure is normal. Click here (1) Slowly reduce the tire pressure of the front or re
Registration
REGISTRATION PROCEDURE 1. BEFORE REGISTRATION NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter. It is not possible to read the transmitter ID after installin
SEE MORE:
Terminals Of Ecu
TERMINALS OF ECU CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the N8 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side. *a Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver) Termina
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for Gasoline Model)
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