RM38T0EC _56 Audio / Visual / Telematics _115231 TELEMATICS _0512170 TELEMATICS SYSTEM(for TOYOTA Connect) C

TELEMATICS  TELEMATICS SYSTEM(for TOYOTA Connect)  B15C511  Emergency Call Switch Circuit Short to Ground  B15C513  Emergency Call Switch Circuit Open  


DESCRIPTION

If the telematics transceiver detects an error in the communication between the telematics transceiver and the map light assembly (emergency call switch) as a result of the telematics transceiver self check, this DTC will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C511 Emergency Call Switch Circuit Short to Ground Emergency call switch impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON
·

Map light assembly

·

Harness or connector

·

Telematics transceiver


B15C513 Emergency Call Switch Circuit Open Emergency call switch impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON
·

Map light assembly

·

Harness or connector

·

Telematics transceiver



WIRING DIAGRAM

E484670E02
0.573,2.073 0.969,2.26 0.396,0.188 10 false I200 5.302,2.083 5.698,2.271 0.396,0.188 10 false T6 0.573,2.24 2.052,2.427 1.479,0.188 10 false Telematics Transceiver 5.302,2.229 7.042,2.521 1.74,0.292 10 false Map Light Assembly 5.375,0.771 5.771,0.958 0.396,0.188 10 false SIG1 5.396,1.563 5.823,1.75 0.427,0.188 10 false GND3 1.438,0.792 1.833,0.979 0.396,0.188 10 false SIG1 1.448,1.594 1.802,1.781 0.354,0.188 10 false SIG- 1.844,0.698 2.094,0.885 0.25,0.188 10 false 21 1.844,1.479 2.094,1.667 0.25,0.188 10 false 3 5.208,0.667 5.417,0.854 0.208,0.188 10 false 7 5.135,1.479 5.344,1.667 0.208,0.188 10 false 19

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 Telematics System.

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS SYSTEM (for TOYOTA Connect)>PRECAUTION

·

When replacing the telematics transceiver, make sure to replace it with a new one.

·

Before replacing the telematics transceiver, refer to Service Bulletin.



PROCEDURE

1.CHECK DTC OUTPUT
a.

Clear the DTCs.

Body Electrical > Telematics > Clear DTCs
50002 459

b.

Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Telematics > Trouble Codes
50001 459

Result:
Result Proceed to
No DTCs are output. A
DTCs are output. B



A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

2.INSPECT MAP LIGHT ASSEMBLY
2.INSPECT MAP LIGHT ASSEMBLY
a.
B641819C02
0.854,1.76 1.021,1.333 true 1.75,1.896 1.448,1.115 true 0.073,0.094 0.354,0.333 0.281,0.24 10 false *a 1.792,1.802 2.354,2.052 0.563,0.25 10 false SIG1 0.646,1.771 1.208,2.021 0.563,0.25 10 false GND3
*a Component without harness connected
(Map Light Assembly)


Remove the map light assembly.

Click hereVehicle Interior>LIGHTING (INT)>PERSONAL LIGHT>REMOVAL


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
7 (SIG1) - 19 (GND3) Emergency call switch not operated 407 to 416 Ω
7 (SIG1) - 19 (GND3) Emergency call switch operated 81 to 83 Ω



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY)

NG

REPLACE MAP LIGHT ASSEMBLY

Click hereVehicle Interior>LIGHTING (INT)>PERSONAL LIGHT>REMOVAL


3.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY)
a.

Disconnect the I200 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
I200-21 (SIG1) - T6-7 (SIG1) Always Below 1 Ω
I200-3 (SIG-) - T6-19 (GND3) Always Below 1 Ω
I200-21 (SIG1) or T6-7 (SIG1) - Body ground Always 10 kΩ or higher
I200-3 (SIG-) or T6-19 (GND3) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.REPLACE TELEMATICS TRANSCEIVER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR