Toyota Corolla Cross: GNSS Antenna Circuit Short to Ground (B15C111,B15C113)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the roof antenna assembly circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B15C111 |
GNSS Antenna Circuit Short to Ground |
Current to the roof antenna assembly is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Short circuit) |
|
|
B15C113 |
GNSS Antenna Circuit Open |
Current to the roof antenna assembly is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON (Open circuit) |
|
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 Telematics System.
Click here
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- When replacing the DCM (telematics transceiver), make sure to replace it with a new one.
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
|
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|
2. |
CHECK DTC |
(a) Turn the ignition switch to ON and wait for 10 seconds or more.
(b) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC B15C111 or B15C113 is output |
B |
| A | .gif)
|
USE SIMULATION METHOD TO CHECK |
|
|
3. |
CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY |
|
(a) Disconnect the No. 3 antenna cord sub-assembly from the roof antenna assembly connector. |
|
(b) Disconnect the No. 3 antenna cord sub-assembly from the No. 2 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 |
|---|---|---|
|
J-5 - I-4 |
Always |
Below 1 Ω |
|
J-5a - I-4a |
Always |
Below 1 Ω |
|
J-5 or I-4 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY |
|
|
4. |
CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY |
|
(a) Disconnect the No. 2 antenna cord sub-assembly from the No. 3 antenna code sub-assembly connector. |
|
(b) Disconnect the No. 2 antenna cord sub-assembly from the 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 |
|---|---|---|
|
H-4 - G-4 |
Always |
Below 1 Ω |
|
H-4a - G-4a |
Always |
Below 1 Ω |
|
H-4 or G-4 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE NO.2 ANTENNA CORD SUB-ASSEMBLY |
|
|
5. |
INSPECT ANTENNA CORD SUB-ASSEMBLY |
|
(a) Disconnect the antenna cord sub-assembly connector from the No. 2 antenna cord sub-assembly. |
|
(b) Disconnect the antenna cord sub-assembly connector from the DCM (telematics transceiver).
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D-1 - F-4 |
Always |
Below 1 Ω |
|
D-1a - F-4a |
Always |
Below 1 Ω |
|
D-1 or F-4 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE ANTENNA CORD SUB-ASSEMBLY |
|
|
6. |
REPLACE ROOF ANTENNA ASSEMBLY |
(a) Replace the roof antenna assembly with a new or known good one.
HINT:
Click here
|
|
7. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
|
|
8. |
CHECK DTC |
(a) Turn the ignition switch to ON and wait for 10 seconds or more.
(b) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC B15C111 or B15C113 is output |
B |
| A |
|
END (ROOF ANTENNA ASSEMBLY IS DEFECTIVE) |
|
|
9. |
REPLACE DCM(TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) assembly with a new one.
HINT:
Click here
| NEXT |
|
PERFORM DCM ACTIVATION |
