Lexus ES: System Diagram
SYSTEM DIAGRAM
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 Booster with Master Cylinder 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
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Initialization
INITIALIZATION INITIALIZE LUGGAGE CLOSER MOTOR ASSEMBLY NOTICE: Initialization of the luggage closer motor assembly (luggage compartment door initial position learning) is necessary if the following work procedures are performed while the luggage compartment door is open.
The cable to the negativ
Inspection
INSPECTION
PROCEDURE
1. INSPECT NO. 1 HV BATTERY INTAKE FILTER
HINT:
If the vehicle is used in an area with heavy traffic or excessive dust,
or if the rear seat is used frequently, the No. 1 HV battery intake filter
may be clogged. Clean or replace the No. 1 HV battery intake fil
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