DESCRIPTION
Detection Item | Symptom | Trouble Area |
---|---|---|
Certification ECU Communication Stop Mode | Either condition is met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
Click here
Click here
HINT:
PROCEDURE
1. | CHECK FOR OPEN IN CAN BUS LINES (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the J41 certification ECU (smart key ECU assembly) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J41-1 (CANH) - J41-2 (CANL) | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω |
NG | ![]() | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
|
2. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Reconnect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J41-4 (+B) - Body ground | Always | 11 to 14 V |
OK | ![]() | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Sound Quality is Bad Only when Disc is Played (Volume is Too Low)
CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System. Click here PROCEDURE 1. REPLACE DISC AND RECHECK (a) Re ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Start Function): Precaution
PRECAUTION CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES CAUTION:
People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the smart access system with push-button start antennas. The radio w ...