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 > Panoramic View Monitor System: Back Camera Current Malfunction (C1621)
DESCRIPTION DTC C1621 is stored if the parking assist ECU determines that the input/output signal communication with the rear television camera assembly is abnormal. DTC No. Detection Item DTC Detection Condition Trouble Area C1621 Back Camera Current Malfunction Rear television cam ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Parking Assist Monitor System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the parking assist monitor system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS (a) Ask the customer about the problems and the co ...