DESCRIPTION
The forward recognition camera receives vehicle information from the ECM via CAN communication.
If the vehicle information stored in the forward recognition camera differs from that sent from the ECM, the forward recognition camera stores this DTC.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
U030057 | Internal Control Module Software Incompatibility Invalid / Incompatible Software Component | When the engine switch is on (IG) for 3 seconds or more, the vehicle information sent from the ECM does not match that stored in the forward recognition camera for 1 second or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
HINT:
Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition.
One Time Recognition: Click here
Sequential Recognition: Click here
PROCEDURE
1. | CHECK FOR DTCs |
(a) Using the Techstream, check for SFI system DTCs.
Powertrain > Engine > Trouble Codes Result | Proceed to |
---|---|
SFI system DTCs are not output | A |
SFI system DTCs are output | B |
B | ![]() | GO TO SFI SYSTEM |
|
2. | CHECK FOR DTCs (HEALTH CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: System Select / Health Check.
(e) Check DTCs.
(f) Turn the engine switch off.
OK:
DTCs indicating a vehicle information mismatch with the ECM are not output by any ECU other than the forward recognition camera.
NG | ![]() | REPLACE ECM |
|
3. | READ VALUE USING TECHSTREAM |
(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 / Pre-Collision System / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Pre-Collision System > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Vehicle Information (Conv/HV) | Vehicle information (Conv/HV) | Unknown / Conv / HV | Conv: Conventional HV: Hybrid vehicle | - |
Tester Display |
---|
Vehicle Information (Conv/HV) |
HINT:
Result | Proceed to |
---|---|
Vehicle information stored in forward recognition camera and actual vehicle specifications do not match | A |
Vehicle information stored in forward recognition camera and actual vehicle specifications match | B |
A | ![]() | REPLACE FORWARD RECOGNITION CAMERA |
B | ![]() | REPLACE ECM |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Power Seat Control System (w/ Memory): Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (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 / Driver Seat / Trouble Codes. Body Electrical > Driver Seat > Trouble Codes (e) Check for DTCs. CLEAR DTC (a) Conn ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning System: Air Outlet Damper Control Servo Motor Circuit (B1443/43)
DESCRIPTION The No. 3 air conditioning radiator damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on these signals to move the No. 3 air conditi ...