Lexus ES: 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 Area |
|---|---|---|---|
| B15CB11 | Telephone Main Antenna Circuit Short to Ground | Telephone antenna (main) impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) (Short circuit) |
|
| B15CB13 | Telephone Main Antenna Circuit Open | Telephone antenna (main) impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) (Open circuit) |
|
WIRING DIAGRAM
w/ SXM Function
w/o SXM Function 
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 TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
| (a) Disconnect the telephone and GPS antenna assembly (for Roof Side) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4 - 4a | Always | 9 to 11 kΩ |
| NG | | REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
|
| 3. | INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
| (a) Disconnect the I telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector. |
|
| (b) Disconnect the H telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I-4 - H-6 | Always | Below 1 Ω |
| I-4 or H-6 - Body ground | Always | 10 kΩ or higher |
| I-4a - H-6a | Always | Below 1 Ω |
| I-4a or H-6a - Body ground | Always | 10 kΩ or higher |
| NG | | REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
|
| 4. | INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
| (a) Disconnect the G telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector. |
|
(b) Disconnect the K*1 or F*2 telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.
w/ SXM Function
| *a | Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly)) |
| *a | Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly)) |
- *1: w/ SXM Function
- *2: w/o SXM Function
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
w/ SXM Function| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G-6 - K-3 | Always | Below 1 Ω |
| G-6 or K-3 - Body ground | Always | 10 kΩ or higher |
| G-6a - K-3a | Always | Below 1 Ω |
| G-6a or K-3a - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G-6 - F-2 | Always | Below 1 Ω |
| G-6 or F-2 - Body ground | Always | 10 kΩ or higher |
| G-6a - F-2a | Always | Below 1 Ω |
| G-6a or F-2a - Body ground | Always | 10 kΩ or higher |
| NG | | REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
|
| 5. | INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the J*1 or E*2 telephone and GPS antenna cord (antenna cord sub-assembly) connector.
w/ SXM Function
| *a | Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly)) |
| *a | Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly)) |
- *1: w/ SXM Function
- *2: w/o SXM Function
| (b) Disconnect the C telephone and GPS antenna cord (antenna cord sub-assembly) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
w/ SXM Function| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J-3 - C-1 | Always | Below 1 Ω |
| J-3 or C-1 - Body ground | Always | 10 kΩ or higher |
| J-3a - C-1a | Always | Below 1 Ω |
| J-3a or C-1a - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| E-2 - C-1 | Always | Below 1 Ω |
| E-2 or C-1 - Body ground | Always | 10 kΩ or higher |
| E-2a - C-1a | Always | Below 1 Ω |
| E-2a or C-1a - Body ground | Always | 10 kΩ or higher |
| NG | | REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
|
| 6. | REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
(a) Replace the telephone and GPS antenna assembly (for Roof Side) with a new or known good one and check if the same problem occurs again.
Click here
OK:
The system returns to normal.
| OK | | END |
|
| 7. | REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver).
Click here
NOTICE:
- The engine switch must be off.
- Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
| NEXT | | PERFORM DCM ACTIVATION |
READ NEXT:
Backup Battery Internal Electronic Failure (B15CC49)
DESCRIPTION This DTC is set when the DCM (telematics transceiver) detects one of the following:
The mobilephone battery voltage drops or the mobilephone battery malfunctions.
The mobilephone batt
Telephone Sub Antenna Circuit Short to Ground (B153711,B153713)
DESCRIPTION These DTCs are stored when a malfunction occurs in the telephone and GPS antenna assembly (for Front Side). DTC No. Detection Item DTC Detection Condition Trouble Area B153711
Indicator (Red) Circuit Short to Ground (B157011,B157013)
DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch. The manual (SOS) switch red i
SEE MORE:
Auto ID Under Registration (C2128)
DESCRIPTION When ID registration is being performed via the automatic ID registration function, the tire pressure warning ECU and receiver stores C2128 and the tire pressure warning light flashes for 1 minute and then illuminates. When the tire pressure warning ECU receives data from all registered
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the terminal is reconnected. System Name See Procedure Lane Control System
