Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Control Module Communication Bus "A" Off (U0073,U0100,U0124,U0126,U0129,U0140,U0155,U0164)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system connected to the clearance warning ECU assembly.
HINT:
If CAN communication system DTCs are stored, they may also be stored in other systems.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0073 | Control Module Communication Bus "A" Off | Control module communication bus off | CAN communication system |
| U0100 | Lost Communication with ECM / PCM "A" | Lost communication with ECM | CAN communication system |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module | Lost communication with airbag ECU assembly | CAN communication system |
| U0126 | Lost Communication with Steering Angle Sensor Module | Lost communication with steering sensor | CAN communication system |
| U0129 | Lost Communication with Brake System Control Module | Lost communication with skid control ECU | CAN communication system |
| U0140 | Lost Communication with Body Control Module | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Control Module | Lost communication with meter circuit plate | CAN communication system |
| U0164 | Lost Communication with HVAC Control Module | Lost communication with air conditioning amplifier assembly | CAN communication system |
PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here .gif)
HINT:
After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
Click here
(c) Recheck for DTCs.
Click here
OK:
No DTCs are output.
HINT:
- If CAN communication system DTCs are stored, they may also be stored in other systems.
- If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
- If these DTCs are output frequently, duplicate the conditions that caused the problem symptoms and perform the inspection again, even though DTCs were not output when rechecking for DTCs.
| OK |  | GO TO CAN COMMUNICATION SYSTEM |
| NG | | USE SIMULATION METHOD TO CHECK |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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