Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Lost Communication with ECM / PCM "A" (U0100,U0129,U023A)
DESCRIPTION
The power steering ECU assembly receives signals from the ECM, skid control ECU (brake actuator assembly) and forward recognition camera (w/ forward recognition camera system) via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition | Note |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | Lost communication with ECM |
| EPS warning light: Does not come on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
| U0129 | Lost Communication with Brake System Control Module | Lost communication with skid control ECU (Brake actuator assembly) |
| EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
| U023A | Lost Communication with Front Camera Module | Lost communication with forward recognition camera |
| EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
PROCEDURE
| 1. | GO TO CAN COMMUNICATION SYSTEM |
(a) Go to CAN communication system.
Click here .gif)
| NEXT | .gif) | END |
Terminals Of Ecu
TERMINALS OF ECU CHECK POWER STEERING ECU ASSEMBLY *a Component without harness connected (Power Steering ECU Assembly) - - (a) Measure the voltage and resistance according to the value(s ...
Steering Column
...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Electric Parking Brake System: Terminals Of Ecu
TERMINALS OF ECU CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) *a Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) - - (a) Disconnect the A41 skid control ECU (brake actuator assembly) connectors. (b) Measure the voltage and resistance according to the ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System: Interior Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the operation of the following lights:
Map Light Assembly (Front Dome Light)
Spot Light Assembly (Rear Dome Light)
Front Door Scuff Plate LH (Scuff Light LH)(w/ Scuff Light)
Front Door Scuff Plate RH (Scuff Light RH)(w/ Scu ...
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
0.0166