Lexus ES: Indicator (Green) Circuit Short to Ground (B157111,B157113)
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 power 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 power 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 power 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.
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PROCEDURE
| 1. | CHECK DTC |
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power 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 SUB-ASSEMBLY (MANUAL (SOS) SWITCH) (GREEN INDICATOR) |
| (a) Remove the map light sub-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 sub-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 MAP LIGHT SUB-ASSEMBLY (MANUAL (SOS) SWITCH) |
|
| 3. | CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT SUB-ASSEMBLY (MANUAL (SOS) SWITCH)) |
(a) Disconnect the G128 DCM (telematics transceiver) connector.
(b) Disconnect the P12 map light sub-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 |
|---|---|---|
| G128-22 (IND2) - P12-7 (IND2) | Always | Below 1 Ω |
| G128-22 (IND2) or P12-7 (IND2) - Body ground | Always | 10 kΩ or higher |
| G128-3 (SIG-) - P12-9 (GND3) | Always | Below 1 Ω |
| G128-3 (SIG-) or P12-9 (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 power switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT | | PERFORM DCM ACTIVATION |
READ NEXT:
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE TELEMATICS SYSTEM (a) Customizing with the Techstream. NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa
Dcm Activation
DCM ACTIVATION HINT: If the DCM (telematics transceiver) has been replaced, it is necessary to perform the Register Vehicle Information procedure. DCM ACTIVATION (a) Connect the Techstream to the DLC3
SEE MORE:
Precaution
PRECAUTION INITIALIZATION NOTICE: Make sure to perform the necessary procedures (adjustment, calibration, initialization, or registration) after parts related to the cable has been disconnected from the negative (-) battery terminal. Click here CHARGING SYSTEM PRECAUTION NOTICE:
Check that the
Components
COMPONENTS ILLUSTRATION *A w/o Panoramic View Monitor System *B w/ Panoramic View Monitor System *1 OUTER MIRROR *2 OUTER MIRROR COVER ASSEMBLY *3 OUTER MIRROR LOWER COVER *4 SIDE TURN SIGNAL LIGHT ASSEMBLY *5 OUTER MIRROR UPPER COVER *6 OUTER MIRROR TAPE
