Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: ECU Malfunction (B1003)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B1003 | ECU Malfunction | The network gateway ECU detects an internal malfunction. | Network gateway ECU | - |
PROCEDURE
| 1. | RECONFIRM DTC OUTPUT |
(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 / Central Gateway / Trouble Codes.
Body Electrical > Central Gateway > Trouble Codes| Result | Proceed to |
|---|---|
| DTC B1003 is not output from the network gateway ECU (Techstream display: Central Gateway) | A |
| DTC B1003 is output from the network gateway ECU (Techstream display: Central Gateway) | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE NETWORK GATEWAY ECU |
.gif)
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Diagnostic Trouble Code Chart DTC No. Detection Item Trouble Area Note Link B1003 ECU Malfunction Network gateway ECU - U0199 Lost Communi ...
Lost Communication with "Door Control Module B" (U0200)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note U0200 Lost Communication with "Door Control Module B" No communication from the outer mirror control ECU ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even when the values are within specifications.
Turn the engine switch on (IG) and park the vehicl ...
Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Bluetooth: What to do if... (Troubleshooting)
If there is a problem with the hands-free system or a Bluetooth device,
first
check the table below.
When using the hands-free system with a Bluetooth device
The hands-free system or Bluetooth device does not work.
The connected device may not be a compatible Bluetooth cellular ...
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
0.0156