| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001N4Q8 |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 09/2022] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): B15CB11,B15CB13; Telephone Main Antenna Circuit Short to Ground; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022] | ||
|
DTC |
B15CB11 |
Telephone Main Antenna Circuit Short to Ground |
|
DTC |
B15CB13 |
Telephone Main Antenna Circuit Open |
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 power 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 power 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
![2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): PRECAUTION](/t3Portal/stylegraphics/info.gif)
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 Codes
OK:
No DTCs are output.
| OK |
|
|
|
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 |
|
|
|
3. |
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)).
w/ SXM Function
|
*a |
Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B))) |
w/o SXM Function
|
*a |
Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type B))) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
w/ SXM Function
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I-4 - H-1 |
Always |
Below 1 Ω |
|
I-4a - H-1a |
Always |
Below 1 Ω |
|
I-4 or H-1 - Body ground |
Always |
10 kΩ or higher |
w/o SXM Function
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I-4 - K-1 |
Always |
Below 1 Ω |
|
I-4a - K-1a |
Always |
Below 1 Ω |
|
I-4 or K-1 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type B)) |
|
|
4. |
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)).
w/ SXM Function
|
*a |
Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A))) |
w/o SXM Function
|
*a |
Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly (for Type A))) |
|
(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:
w/ SXM Function
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G-1 - F-1 |
Always |
Below 1 Ω |
|
G-1a - F-1a |
Always |
Below 1 Ω |
|
G-1 or F-1 - Body ground |
Always |
10 kΩ or higher |
w/o SXM Function
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
J-1 - F-1 |
Always |
Below 1 Ω |
|
J-1a - F-1a |
Always |
Below 1 Ω |
|
J-1 or F-1 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY (for Type A)) |
|
|
5. |
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-1 - C-1 |
Always |
Below 1 Ω |
|
E-1a - C-1a |
Always |
Below 1 Ω |
|
E-1 or C-1 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 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 (TELEPHONE AND GPS ANTENNA (FOR ROOF SIDE) IS DEFECTIVE) |
|
|
7. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver).
Click here
NOTICE:
- The power switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT |
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