| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001LF5R |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [09/2019 - 04/2020] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Sedan, Gasoline Model): B15C5; Manual Button Malfunction; 2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020] | ||
|
DTC |
B15C5 |
Manual Button Malfunction |
DESCRIPTION
This DTC is set when the DCM (Telematics Transceiver) detects an open or short circuit in the manual (SOS) switch.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B15C5 |
Manual Button Malfunction |
Open or short circuit in manual (SOS) switch is detected. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Before performing this diagnostic procedure, make sure to perform Health Check and confirm that the DCM/VIN registration information is correct.
Click here
![2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Sedan, Gasoline Model): HEALTH CHECK](/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.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
(f) Recheck for DTCs.
Body Electrical > Telematics > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC B1570, B1571 and B15C5 are output |
A |
|
DTC B15C5 is output (DTC B1570 and B1571 are not output) |
B |
| B |
|
|
|
2. |
INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) |
|
(a) Disconnect the T6 map light assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
18 (SIG1) - 12 (GND3) |
Manual (SOS) switch not pressed |
410 to 414 Ω |
|
18 (SIG1) - 12 (GND3) |
Manual (SOS) switch pressed |
81 to 83 Ω |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY) |
(a) Disconnect the I72 DCM (Telematics Transceiver) connector.
(b) Disconnect the T6 map light assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I72-26 (SIG-) - T6-12 (GND3) |
Always |
Below 1 Ω |
|
I72-26 (SIG-) or T6-12 (GND3) - Body ground |
Always |
10 kΩ or higher |
|
I72-27 (SIG1) - T6-18 (SIG1) |
Always |
Below 1 Ω |
|
I72-27 (SIG1) or T6-18 (SIG1) - 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).
Click here
NOTICE:
- The engine switch must be off.
- Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
| NEXT |
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