| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001LA4D |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [09/2019 - 04/2020] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Hatchback, Gasoline Model): B15C111,B15C113; GNSS Antenna Circuit Short to Ground; 2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020] | ||
|
DTC |
B15C111 |
GNSS Antenna Circuit Short to Ground |
|
DTC |
B15C113 |
GNSS Antenna Circuit Open |
DESCRIPTION
These DTCs are stored when a malfunction occurs in the telephone and GPS antenna (for Roof Side) circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B15C111 |
GNSS Antenna Circuit Short to Ground |
Current to the GNSS antenna is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) (Short circuit) |
|
|
B15C113 |
GNSS Antenna Circuit Open |
Current to the GNSS antenna is higher than the malfunction threshold for 10 seconds or more when the engine switch is on (IG) (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 Safety Connect System.
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![2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Hatchback, Gasoline Model): PRECAUTION](/t3Portal/stylegraphics/info.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 Codes
OK:
No DTCs are output.
| OK |
|
|
|
2. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B)) |
|
(a) Disconnect the antenna connector from the telephone and GPS antenna (for Roof Side). |
|
|
(b) Disconnect the antenna connector from the telephone and GPS antenna cord (antenna cord sub-assembly (for Type A)). |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I-5 - H-4 |
Always |
Below 1 Ω |
|
I-5a - H-4a |
Always |
Below 1 Ω |
|
I-5 or H-4 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B)) |
|
|
3. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A)) |
|
(a) Disconnect the antenna connector from the telephone and GPS antenna cord (antenna cord sub-assembly (for Type B)). |
|
|
(b) Disconnect the antenna connector from the telephone and GPS antenna cord (No. 2 antenna cord sub-assembly). |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G-4 - F-2 |
Always |
Below 1 Ω |
|
G-4a - F-2a |
Always |
Below 1 Ω |
|
G-4 or F-2 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A)) |
|
|
4. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
|
(a) Disconnect the antenna connector from the telephone and GPS antenna cord (antenna cord sub-assembly (Type A)). |
|
|
(b) Disconnect the antenna 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 |
|---|---|---|
|
E-2 - B-1 |
Always |
Below 1 Ω |
|
E-2a - B-1a |
Always |
Below 1 Ω |
|
E-2 or B-1 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
|
|
5. |
CHECK TELEPHONE AND GPS ANTENNA (FOR ROOF SIDE) |
(a) Replace the telephone and GPS antenna (for Roof Side) with a known good one.
Click here
(b) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble Codes
OK:
No DTCs are output.
| OK |
|
END (TELEPHONE AND GPS ANTENNA (FOR ROOF SIDE) IS DEFECTIVE) |
|
|
6. |
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 |
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