Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Lock Function does not Operate (Close &)
DESCRIPTION
The door control switch signal is sent to the multiplex network door ECU. If the power back door system does not operate when the door control switch is operated, the door control switch circuit may be malfunctioning.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.
Click here
.gif)
-
Check the smart access system (for Entry Function) first before troubleshooting the power back door system.
Click here
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(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 / Back Door / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Back Door > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Close and Lock SW | Door control switch signal | OFF or ON | OFF: Door control switch not pushed ON: Door control switch pushed | - |
| Tester Display |
|---|
| Close and Lock SW |
OK:
The display is as specified in the normal condition column.
| OK |  | REPLACE MULTIPLEX NETWORK DOOR ECU |
|
.gif)
| 2. | INSPECT DOOR CONTROL SWITCH |
(a) Remove the door control switch.
Click here
(b) Inspect the door control switch.
Click here
| NG | | REPLACE DOOR CONTROL SWITCH |
|
| 3. | CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND) |
(a) Disconnect the Z16 multiplex network door ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Z30-5 (CLLS) - Z16-10 (CLSW) | Always | Below 1 Ω |
| Z30-2 (E) - Body ground | Always | Below 1 Ω |
| Z30-5 (CLLS) or Z16-10 (CLSW) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Power Back Door cannot be Operated Using Kick Sensor
DESCRIPTION The kick door control sensor turns the sensing circuit on or off based on the vehicle speed and IG and ACC signals sent from the main body ECU (multiplex network body ECU) via LIN communic ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Driver Side Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the driver door or the front door outside handle assembly (for driver door) (touch sensor) may be malfunctioning. If the entry functions for other doors oper ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Dynamic Radar Cruise Control System: Road Test
ROAD TEST HINT:
The dynamic radar cruise control system has 2 cruise control modes: constant speed control mode and vehicle-to-vehicle distance control mode.
Vehicle-to-vehicle distance control mode is selected by default when the dynamic radar cruise control system is turned on using the cruis ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0144