DESCRIPTION
This DTC is set when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the engine switch is turned on (IG).
If the safety connect system is not active, the manual (SOS) switch green indicator will turn off.
If the safety connect system is active, the manual (SOS) switch green indicator will blink while communicating with the call center.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
B157111 | Indicator (Green) Circuit Short to Ground | Manual (SOS) switch green indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) |
|
B157113 | Indicator (Green) Circuit Open | Manual (SOS) switch green indicator 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
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) (GREEN INDICATOR) |
(a) Remove the map light assembly (manual (SOS) switch). Click here |
|
(b) Connect 2 dry-cell batteries (1.5 V each) in series.
(c) Connect a positive (+) lead from batteries to terminal 7 (IND2) and a negative (-) lead to terminal 9 (GND3) of the map light assembly (manual (SOS) switch) connector.
(d) Check if the manual (SOS) switch green indicator comes on.
OK:
Manual (SOS) switch green indicator illuminates.
NG | REPLACE ROOF CONSOLE BOX 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 |
---|---|---|
J157-22 (IND2) - U12-7 (IND2) | Always | Below 1 Ω |
J157-22 (IND2) or U12-7 (IND2) - Body ground | Always | 10 kΩ or higher |
J157-3 (SIG-) - U12-9 (GND3) | Always | Below 1 Ω |
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:
NEXT | PERFORM DCM ACTIVATION |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Brake Pedal: Components
COMPONENTS ILLUSTRATION *1 BRAKE PEDAL RETURN SPRING *2 BRAKE PEDAL SUPPORT ASSEMBLY *3 PUSH ROD PIN *4 STOP LIGHT SWITCH ASSEMBLY *5 BRAKE MASTER CYLINDER PUSH ROD CLEVIS *6 LOCK NUT *7 WIRE HARNESS - - Tightening torque for "Major areas involving basi ...
Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Adjusting the seats: Driving position memory
This feature automatically adjusts the driver's seat (on some models),
steering
wheel, outside rear view mirrors and head-up display (if equipped) to make
entering and exiting the vehicle easier or to suit your preferences.
Power easy access system (driver's side only)
The seat and steering wh ...