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

TELEMATICS  TELEMATICS SYSTEM(for TOYOTA Connect)  B15C464  Airbag Signal Signal Plausibility Failure  


DESCRIPTION

If the telematics transceiver detects an error in communication between the telematics transceiver and the airbag ECU assembly as a result of the telematics transceiver self check, this DTC will be output.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C464 Airbag Signal Signal Plausibility Failure Telematics transceiver detects an error in signals from airbag ECU assembly when ignition switch is ON.
·

Airbag system

·

Harness or connector

·

Airbag ECU assembly

·

Telematics transceiver



WIRING DIAGRAM

B641197E02
2.531,1.125 2.833,1.302 0.302,0.177 10 false 23 1.958,1.125 2.479,1.323 0.521,0.198 10 false GSW3 4.896,1.125 5.406,1.313 0.51,0.188 10 false GSW 4.604,1.125 4.875,1.333 0.271,0.208 10 false 13 1.167,2.073 1.49,2.25 0.323,0.177 10 false I47 1.156,2.24 2.74,2.458 1.583,0.219 10 false Airbag ECU Assembly 4.667,2.063 5.219,2.292 0.552,0.229 10 false I200 4.667,2.229 6.771,2.438 2.104,0.208 10 false Telematics Transceiver

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

·

The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution in the SRS.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>PRECAUTION

·

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

·

Before replacing the telematics transceiver, refer to Service Bulletin.

·

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY



PROCEDURE

1.CHECK DTC (AIRBAG SYSTEM)
a.

Turn the ignition switch to ON and wait for 10 seconds or more.


b.

Check the DTC of "AIRBAG SYSTEM".


Result:
Result Proceed to
DTCs are not output A
DTCs are output B



A

2.CHECK DTC

B

GO TO AIRBAG SYSTEM

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK DTC
a.

Turn the ignition switch to ON and wait for 10 seconds or more.


b.

Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes
50001 459
OK:

No DTCs are output.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

3.CHECK TELEMATICS TRANSCEIVER (GSW SIGNAL)
3.CHECK TELEMATICS TRANSCEIVER (GSW SIGNAL)
a.
E422011C98
1.469,0.219 1.948,0.458 0.479,0.24 0.719,0.375 0.896,0.375 0.896,0.375 1.104,1.104 true 0.135,0.104 0.406,0.365 0.271,0.26 10 false *a 0.323,0.292 0.698,0.438 0.375,0.146 10 false GSW 1.583,0.25 2.021,0.5 0.438,0.25 10 false I200 0.208,4.031 0.646,4.292 0.438,0.26 10 false GND
*a Component with harness connected
(Telematics Transceiver)


Remove the telematics transceiver but do not disconnect the connectors.

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS TRANSCEIVER>REMOVAL


b.

Check the input waveform.

i.

Check the signal waveform according to the condition(s) in the table below. (Check the waveform from the back of the wire harness connector of the telematics transceiver while the airbag ECU assembly connectors are connected.)

Reference Waveform:
Item Condition
Tester connection I200-13 (GSW) - Body ground
Tool setting 5.0 V/DIV., 20 ms./DIV.
Vehicle condition Ignition switch ON


OK:

The waveform is similar to that shown in the illustration.




Result:
Proceed to
OK
NG



OK

4.REPLACE TELEMATICS TRANSCEIVER

NG

5.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - AIRBAG ECU ASSEMBLY)
5.CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - AIRBAG ECU ASSEMBLY)
a.

Disconnect the I200 telematics transceiver connector.


b.

Disconnect the I47 airbag ECU assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I200-13 (GSW) - I47-23 (GSW3) Always Below 1 Ω
I200-13 (GSW) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE AIRBAG ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR