Toyota Corolla Cross: Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)
DESCRIPTION
This DTC is stored 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 |
|---|---|---|---|
|
B15C511 |
Emergency Call Switch Circuit Short to Ground |
Manual (SOS) switch impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON |
|
|
B15C513 |
Emergency Call Switch Circuit Open |
Manual (SOS) switch impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON |
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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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PROCEDURE
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1. |
CHECK DTC |
(a) Turn the ignition switch to ON and wait for 10 seconds or more.
(b) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(c) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble CodesOK:
No DTCs are output.
| OK | .gif)
|
USE SIMULATION METHOD TO CHECK |
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2. |
INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH) |
|
(a) Remove the map light assembly (manual [SOS] switch). Click here |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T6-5 (SIG1) - T6-8 (GND3) |
Manual (SOS) switch not operated |
410 to 414 Ω |
|
T6-5 (SIG1) - T6-8 (GND3) |
Manual (SOS) switch operated |
81 to 83 Ω |
| NG |
|
REPLACE MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] - MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH)) |
(a) Disconnect the I200 DCM (telematics transceiver) connector.
(b) Disconnect the T6 map light assembly (manual [SOS] switch) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I200-21 (SIG1) - T6-5 (SIG1) |
Always |
Below 1 Ω |
|
I200-3 (SIG-) - T6-8 (GND3) |
Always |
Below 1 Ω |
|
I200-21 (SIG1) or T6-5 (SIG1) - Body ground |
Always |
10 kΩ or higher |
|
I200-3 (SIG-) or T6-8 (GND3) - 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) with a new one.
Click here
NOTICE:
- The ignition switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT |
|
PERFORM DCM ACTIVATION |
