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 > Navigation System: Touch Pad Memory Module Malfunction (B155B)
DESCRIPTION This DTC is stored if the remote touch (remote operation controller assembly) detects a malfunction in itself, such as internal hardware failure or remote touch screen memory module malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area B155B Touch Pad Me ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Lighting System (w/ Automatic Headlight Beam Level Control System): Headlight Beam Level Control Motor LH Lost Communication (B2424,B2425)
DESCRIPTION Each No. 1 headlight ECU sub-assembly and headlight leveling motor communicate via LIN communication. The headlight leveling motor operates according to power supplied and automatic headlight beam level control signals from its respective No. 1 headlight ECU sub-assembly and sends its op ...