Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Control Module Communication Bus "A" Off (U0073,U0155)
DESCRIPTION
These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication line.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0073 | Control Module Communication Bus "A" Off | Control module communication bus off | CAN communication system |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Lost communication with the combination meter assembly | CAN communication system |
HINT:
When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.
PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Clear the DTCs
Click here .gif)
(b) Check for CAN communication system DTCs
Click here
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are output | A |
| No CAN communication system DTCs are output | B |
| A |  | GO TO CAN COMMUNICATION SYSTEM |
| B | | USE SIMULATION METHOD TO CHECK |
Rear Sensor Communication Malfunction (C1AED)
DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. DTC No. Dete ...
CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION If DTC U1000 is stored frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs. DTC ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Blower Unit: Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY (a) Connect the 2 links of the blower assembly to the 2 plates of the No. 1 blower damper servo sub-assembly as shown in the illustration. *a Link (b) Install the No. 1 blower damper servo sub-assembly ...
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Safety Connect System: Telephone Sub Antenna Circuit Short to Ground (B153711,B153713)
DESCRIPTION These DTCs are stored when a malfunction occurs in the telephone and GPS antenna (for Front Side). DTC No. Detection Item DTC Detection Condition Trouble Area B153711 Telephone Sub Antenna Circuit Short to Ground Telephone antenna (sub) impedance (Ω) is lower than the m ...
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
0.0147