DESCRIPTION
The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
This DTC is stored when a microphone connection detection signal line is disconnected.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
B1579 | Voice Recognition Microphone Disconnected | Microphone signal is lost. |
|
WIRING DIAGRAM
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. | INSPECT RADIO RECEIVER ASSEMBLY |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
|
2. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the J151 radio receiver assembly connector.
(b) Disconnect the U15 telephone microphone assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J151-25 (SNS2) - U15-3 (SNS2) | Always | Below 1 Ω |
J151-22 (MIN-) - U15-4 (MCO-) | Always | Below 1 Ω |
J151-25 (SNS2) or U15-3 (SNS2) - Body ground | Always | 10 kΩ or higher |
J151-22 (MIN-) or U15-4 (MCO-) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | INSPECT TELEPHONE MICROPHONE ASSEMBLY |
(a) Remove the telephone microphone assembly.
Click here
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
NG | ![]() | REPLACE TELEPHONE MICROPHONE ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Back Door Closer Ecu: Installation
INSTALLATION PROCEDURE 1. INSTALL MULTIPLEX NETWORK DOOR ECU (a) Engage the 2 guides to install the multiplex network door ECU with the 2 bolts. Torque: 5.5 N·m {56 kgf·cm, 49 in·lbf} (b) Connect the 2 connectors. 2. INSTALL BACK DOOR TRIM PANEL ASSEMBLY (w/o Rear No. 2 Seat) Click here 3. IN ...
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Power Mirror Control System (w/o Memory): Terminals Of Ecu
TERMINALS OF ECU CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) (a) Disconnect the N4 outer mirror control ECU assembly (driver door) connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the con ...