DESCRIPTION
This DTC is stored if the No. 1 headlight ECU sub-assembly LH for another destination is installed.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
---|---|---|---|---|
B2456 | Left Headlight ECU Variation Error |
|
| AFS |
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | CLEAR 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 / AFS / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > AFS > Clear DTCs
|
2. | CHECK FOR 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 / AFS / Trouble Codes.
(e) Check for DTCs.
Body Electrical > AFS > Trouble CodesOK:
DTC B2456 is not output.
OK | ![]() | USE SIMULATION METHOD TO CHECK |
|
3. | CHECK ECM |
(a) Check if the part number of the ECM installed to the vehicle is correct.
OK:
Part number is correct.
NG | ![]() | REPLACE ECM |
|
4. | CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Check if the part number of the main body ECU (multiplex network body ECU) installed to the vehicle is correct.
OK:
Part number is correct.
OK | ![]() | REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
NG | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Power Seat Control System(for Second Row): Power Source Circuit
DESCRIPTION Power is supplied to the fold seat control ECU through the ECU-DCC NO. 2, P/SEAT R/R*1, P/SEAT R/L*2 and ECU-IG1 NO. 4 fuses.
*1: for Rear Right Seat
*2: for Rear Left Seat
WIRING DIAGRAM CAUTION / NOTICE / HINT HINT: Inspect the fuses for circuits related to this system before ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Meter / Gauge System: Open in Turn Signal Circuit (B1507)
DESCRIPTION These DTCs are stored when the combination meter assembly detects an open in a turn signal light circuit, or a short in a turn signal light circuit or the hazard warning light circuit. HINT:
If there is an open in a front turn signal light circuit or rear turn signal light circuit, th ...