Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)
DESCRIPTION
If the DCM (telematics transceiver) detects an error in the communication between the DCM (telematics transceiver) and the map light assembly (manual (SOS) switch) as a result of the DCM (telematics transceiver) self check, this DTC will be stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15C511 | Emergency Call Switch Circuit Short to Ground | Manual (SOS) switch impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) |
|
| B15C513 | Emergency Call Switch Circuit Open | Manual (SOS) switch impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) |
|
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 Safety Connect System.
Click here .gif)
PROCEDURE
| 1. | CHECK DTC |
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and wait for 10 seconds or more.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(f) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble CodesOK:
No DTCs are output.
| OK |  | USE SIMULATION METHOD TO CHECK |
|
| 2. | INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) |
| (a) Remove the map light assembly (manual (SOS) switch). Click here |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 13 (SIG1) - 14 (GND3) | Manual (SOS) switch not operated | 410 to 414 Ω |
| 13 (SIG1) - 14 (GND3) | Manual (SOS) switch operated | 81 to 83 Ω |
| NG | | REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) |
|
| 3. | CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)) |
(a) Disconnect the J157 DCM (telematics transceiver) connector.
(b) Disconnect the U12 map light assembly (manual (SOS) switch) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J157-21 (SIG1) - U12-13 (SIG1) | Always | Below 1 Ω |
| J157-3 (SIG-) - U12-9 (GND3) | Always | Below 1 Ω |
| J157-21 (SIG1) or U12-13 (SIG1) - Body ground | Always | 10 kΩ or higher |
| J157-3 (SIG-) or U12-9 (GND3) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. | REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
NOTICE:
- The engine switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT | | PERFORM DCM ACTIVATION |
Airbag Signal Signal Plausibility Failure (B15C464)
DESCRIPTION If the DCM (telematics transceiver) detects an error in communication between the DCM (telematics transceiver) and the airbag sensor assembly as a result of the DCM (telematics transceiver ...
Telephone Main Antenna Circuit Short to Ground (B15CB11,B15CB13)
DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects an open or a short in the telephone antenna (main) circuit. DTC No. Detection Item DTC Detection Condition Trouble ...
Other materials:
Chevrolet Trax (2013-2022) Owner's Manual > Tire Pressure Monitor Operation: TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire pressure warning light,
defined above, flashes for about
one minute and then stays on for
the remainder of the ignition cycle.
A DIC warning message ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Rear Center Seat Outer Belt Assembly(w/ Rear No. 2 Seat): Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during rear center seat outer belt assembly removal/installation are shown below. Necessary Procedure After Par ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
- General
- Audio & Visual & Telematics
- Brake
- Drivetrain
- Engine & Hybrid System
- Power Source & Network
- Steering
- Suspension
- Vehicle Exterior
- Vehicle Interior
Chevrolet Trax (2013-2022) Owner's Manual
0.0182