DESCRIPTION
This circuit is used to send and receive signals between the DCM (Telematics Transceiver), radio receiver assembly and navigation ECU.
WIRING DIAGRAM
PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the J157 DCM (Telematics Transceiver) connector.
(b) Disconnect the J149 radio receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J157-31 (USBG) - J149-11 (USBG) | Always | Below 1 Ω |
J157-17 (VOT+) - J149-13 (VOR+) | Always | Below 1 Ω |
J157-15 (USBV) - J149-10 (USBV) | Always | Below 1 Ω |
J157-17 (VOT-) - J149-14 (VOR-) | Always | Below 1 Ω |
J157-34 (VOR-) - J149-16 (VOT-) | Always | Below 1 Ω |
J157-18 (VOR+) - J149-15 (VOT+) | Always | Below 1 Ω |
J157-31 (USBG) or J149-11 (USBG) - Body ground | Always | 10 kΩ or higher |
J157-17 (VOT+) or J149-13 (VOR+) - Body ground | Always | 10 kΩ or higher |
J157-15 (USBV) or J149-10 (USBV) - Body ground | Always | 10 kΩ or higher |
J157-17 (VOT-) or J149-14 (VOR-) - Body ground | Always | 10 kΩ or higher |
J157-34 (VOR-) or J149-16 (VOT-) - Body ground | Always | 10 kΩ or higher |
J157-18 (VOR+) or J149-15 (VOT+) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. | CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the J157 DCM (Telematics Transceiver) connector. |
|
(b) Disconnect the J153 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J157-1 (USB-) - J153-2 (USB-) | Always | Below 1 Ω |
J157-2 (USB+) - J153-1 (USB+) | Always | Below 1 Ω |
J157-3 (USBS) - J153-3(USBS) | Always | Below 1 Ω |
J157-1 (USB-) or J153-2 (USB-) - Body ground | Always | 10 kΩ or higher |
J157-2 (USB+) or J153-1 (USB+) - Body ground | Always | 10 kΩ or higher |
J157-3 (USBS) or J153-3 (USBS) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Telescopic Position Sensor or Telescopic Motor Circuit Malfunction (B2611)
DESCRIPTION The telescopic motor is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and slides the steering column forward and backward. The telescopic position sensor (Hall IC) in the telescopic motor detects the sliding position of the steering column in th ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Lighting System: Operation Check
OPERATION CHECK INSPECT ILLUMINATED ENTRY SYSTEM OPERATION NOTICE: Perform this inspection with the customize parameters at the initial settings. HINT: Perform this inspection with the door switch of the map light assembly on. Lights Controlled by Illuminated Entry System Control Condition Li ...