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 |
|
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
|
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 |
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DESCRIPTION
If an open or short circuit in the roof antenna assembly is
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Backup Battery Internal Electronic Failure (B15CC49)
DESCRIPTION
This DTC is stored when the DCM (telematics transceiver) detects
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The mobilephone battery voltage drops or the mobilephone battery malfunctions.
The mobil
Green Indicator Remains Off
DESCRIPTION
After turning the ignition switch to ON, the DCM (telematics
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will illuminate for 2 seconds and turn
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DESCRIPTION
When the system is starting up and the skid control ECU (brake
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DTC No.
Detection Item
DTC Detection Condition
Freeze Frame Data
FREEZE FRAME DATA
FREEZE FRAME DATA
NOTICE:
It is difficult to show the specified values (judgment values) clearly because
freeze frame data values change significantly due to differences in measurement
conditions, surroundings, or vehicle conditions. For this reason, there may
be a p
