Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
CHECK WINDSHIELD WIPER MOTOR ASSEMBLY
(a) Disconnect the i1 windshield wiper motor assembly connector.
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| i1-3 (L) - Body ground | B - Body ground | Engine switch on (IG) signal (Power source circuit) | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| i1-4 (+S) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the i1 windshield wiper motor assembly connector.
(d) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| i1-1 (2S) - Body ground | B - Body ground | Windshield wiper motor assembly HI operation signal | Windshield wiper motor assembly stopped | 11 to 14 V |
| Windshield wiper motor assembly operating in HI | Below 1 V | |||
| i1-2 (MPX1) - Body ground | GR - Body ground | LIN communication signal | Engine switch on (IG) | Pulse generation |
HINT:
If the result is not as specified, there may be a malfunction in the wire harness.
CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System))
(a) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A50-7 (HLC) - Body ground | B - Body ground | Headlight cleaner operation signal | Engine switch on (IG), headlight cleaner not operating | 11 to 14 V |
| Engine switch on (IG), headlight cleaner operating | Below 1 V | |||
| A50-18 (FRWA) - Body ground | B - Body ground | Washer switch operation signal | Engine switch on (IG), washer switch off | 11 to 14 V |
| Engine switch on (IG), washer switch on | Below 1 V |
HINT:
Since the A50 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (for Single Beam Headlight without AFS (Adaptive Front-lighting System))
(a) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A50-7 (HLC) - Body ground | B - Body ground | Headlight cleaner operation signal | Engine switch on (IG), headlight cleaner not operating | 11 to 14 V |
| Engine switch on (IG), headlight cleaner operating | Below 1 V | |||
| A50-18 (FRWA) - Body ground | B - Body ground | Washer switch operation signal | Engine switch on (IG), washer switch off | 11 to 14 V |
| Engine switch on (IG), washer switch on | Below 1 V |
HINT:
Since the A50 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
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 pr ...
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / (desired system) / ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Window Regulator Motor (for Rear Door): Components
COMPONENTS ILLUSTRATION *1 COURTESY LIGHT ASSEMBLY *2 REAR DOOR ARMREST COVER *3 REAR DOOR INSIDE HANDLE BEZEL PLUG *4 REAR DOOR TRIM BOARD SUB-ASSEMBLY *5 REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY WITH REAR DOOR UPPER ARMREST BASE PANEL - - ILLUSTRATION *1 P ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Lin Communication System: Front Passenger Side Door ECU Communication Stop (B2322)
DESCRIPTION This DTC is stored when LIN communication between the power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B2322 Front Passenger Side Door ECU Commu ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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