DESCRIPTION
The DCM (telematics transceiver) sends a mute signal to the stereo component amplifier assembly.
The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telematics transceiver).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | INSPECT DCM (TELEMATICS TRANSCEIVER) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. | CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the J66 stereo component amplifier assembly connector.
(b) Disconnect the J157 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J66-2 (TMUT) - J157-14 (MUTE) | Always | Below 1 Ω |
J66-2 (TMUT) or J157-14 (MUTE) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
3. | INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Reconnect the J66 stereo component amplifier assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() | REPLACE DCM (TELEMATICS TRANSCEIVER) |
NG | ![]() | REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Combination Light Assembly (w/ Rear No. 2 Seat): Components
COMPONENTS ILLUSTRATION *A for RH Side *B for LH Side *1 FRONT DECK SIDE TRIM COVER *2 REAR DOOR INSIDE SCUFF PLATE *3 REAR DOOR SCUFF PLATE *4 REAR SEAT OUTER TRACK BRACKET COVER LH *5 REAR SEAT OUTER TRACK BRACKET COVER RH *6 REAR SEAT SIDE GARNISH ILLUST ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Check Bus 1 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 23 (CA1H) of the network gateway ECU and terminal 4 (CG) of the DLC3, or terminal 8 (CA1L) of the network gateway ECU and terminal 4 (CG) of the DLC3. Symptom Trouble A ...