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:
Click here
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 (DCM (TELEMATICS TRANSCEIVER) - TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the J157 DCM (telematics transceiver) 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 |
---|---|---|
J157-7 (MCI-) - U15-4 (MCO-) | Always | Below 1 Ω |
J157-7 (MCI-) or U15-4 (MCO-) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the J151 radio receiver 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 |
---|---|---|
J151-22 (MIN-) - J157-32(MCO-) | Always | Below 1 Ω |
J151-22 (MIN-) or J157-32 (MCO-) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. | 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 |
J151-25 (SNS2) or U15-3 (SNS2) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. | INSPECT DCM (TELEMATICS TRANSCEIVER) |
(a) Reconnect the J157 DCM (telematics transceiver) connector.
(b) Reconnect the J151 radio receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(d) Proceed to the next step based on the inspection result.
NG | ![]() | REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
6. | 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) 2016-2023 Repair Manual > Panoramic View Monitor Switch: Inspection
INSPECTION PROCEDURE 1. INSPECT PANORAMIC VIEW MONITOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) (a) Remove the panoramic view monitor switch (integration control and panel assembly). Click here (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Television Camera (for Rear): Installation
INSTALLATION PROCEDURE 1. INSTALL REAR TELEVISION CAMERA ASSEMBLY (a) Push the television camera assembly in the direction indicated by the arrow (1) to engage the guide and push it in the direction indicated by the arrow (2) to engage the claw and install the television camera assembly. Inst ...