Active Noise Control ECU Communication Stop Mode [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR OPEN IN CAN BUS LINES (STEREO COMPONENT EQUALIZER ASSEMBLY BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the J15 stereo component equalizer assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition J15-1 (CANH) - J15-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY)
Result:
OK
See step 2
- CHECK STEREO COMPONENT EQUALIZER ASSEMBLY POWER SOURCE CIRCUIT
- Check the stereo component equalizer assembly power source circuit.
Refer to Power Source Circuit [09/2023 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY. Refer to REMOVAL [09/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Check the stereo component equalizer assembly power source circuit.