TERMINALS OF ECM
CHECK ECM
HINT:
The standard normal voltage 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 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 |
|---|---|---|---|---|
| D2-53 (E1) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
| A37-1 (BATT) - D2-53 (E1) | G - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| D2-135 (LIN) - Body ground | B - Body ground | LIN communication line | Engine switch off (while LIN communication stopped) | 10 kΩ or higher |
Problem Symptoms Table
Diagnosis SystemLexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Window / Glass: Rear Power Window Switch
ComponentsCOMPONENTS ILLUSTRATION *1 REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY *2 REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY WITH REAR DOOR UPPER ARMREST BASE PANEL InspectionINSPECTION PROCEDURE 1. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (for LH/RH DOOR) (a) Check the ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Lin Communication System: No Response from ID BOX (B2789)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B2789 No Response from ID BOX No communicatio ...