Lexus ES: Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received (U040181)
DESCRIPTION
If the ECM cannot recognize the forward recognition camera. DTC U040181 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from |
|---|---|---|---|---|---|
| U040181 | Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received | Approximately 17 seconds or more after the engine switch is turned on (IG), the ECM cannot recognize the forward recognition camera for approximately 2 seconds or more. | ECM | Does not come on | Radar Cruise2 |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the ECM, refer to Registration.
Click here .gif)
PROCEDURE
| 1. | CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Powertrain > Radar Cruise2 > Trouble Codes| Result | Proceed to |
|---|---|
| DTC U040181 is not output | A |
| DTC U040181 is output | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE ECM |
READ NEXT:
Steering Pad Switch Circuit
DESCRIPTION
The steering pad switch assembly outputs the dynamic cruise control on/off signal and various control signals to the ECM.
The ECM controls the dynamic cruise control system according
Steering Pad Switch Circuit
DESCRIPTION
The steering pad switch assembly outputs the dynamic cruise control on/off signal and various control signals to the ECM.
The ECM controls the dynamic cruise control system according
Distance Control Switch Circuit
DESCRIPTION The vehicle-to-vehicle distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The vehicle-to-vehicle distance control switch is installed in the
SEE MORE:
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Sliding roof system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. CHECK DLC3 (a) Check the DLC3. Cli
Rear Right Center Sensor Malfunction (C1AE8)
DESCRIPTION The rear center ultrasonic sensor RH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear center ultrasonic sensor RH. If the rear center ultrasonic sensor RH has an open circuit or other malfunction, it will not fu
