Lexus ES: Terminals Of Ecm
TERMINALS OF ECM
HINT:
The standard normal voltage and resistance between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage and resistance for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A28-10 (E1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| A28-1 (BATT) - A28-10 (E1) | G - W-B | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| C77-62 (LIN) - Body ground | B - Body ground | LIN communication line | Engine switch off (while LIN communication stopped) | 10 kΩ or higher |
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, confirm
System Diagram
SYSTEM DIAGRAM
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Cannot Switch to Automatic ID Registration Mode
DESCRIPTION When "Change Wheel Set" is selected on the multi-information display and the "OK" switch (steering pad switch assembly) is pushed and held, the system enters ID registration mode and the tire pressure warning light blinks 3 times. The main body ECU (multiplex network body ECU) receives s
Components
COMPONENTS ILLUSTRATION *1 NO. 2 PARKING BRAKE WIRE ASSEMBLY *2 REAR AXLE HUB AND BEARING ASSEMBLY *3 REAR AXLE SHAFT NUT *4 REAR DISC *5 REAR DISC BRAKE CALIPER ASSEMBLY *6 REAR SKID CONTROL SENSOR *7 REAR DISC BRAKE DUST COVER SUB-ASSEMBLY *8 REAR DRIVE SHAF
