RM35X0E _56 Audio / Visual / Telematics _078380 TELEMATICS _0482056 TELEMATICS SYSTEM(for Toyota Connected Services) C

TELEMATICS TELEMATICS SYSTEM(for Toyota Connected Services) B15C464 Airbag Signal Signal Plausibility Failure

DESCRIPTION

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

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

WIRING DIAGRAM

1.083,2.031 1.583,2.229 0.5,0.198 10 false N164 1.073,2.198 2.677,2.448 1.604,0.25 10 false Telematics Transceiver 4.698,2.021 5.031,2.198 0.333,0.177 10 false N45 4.708,2.177 6.646,2.438 1.938,0.26 10 false Airbag Sensor Assembly 2,1.115 2.458,1.313 0.458,0.198 10 false GSW 2.438,1.021 2.677,1.229 0.24,0.208 10 false 13 4.563,1.021 4.844,1.219 0.281,0.198 10 false 23 4.823,1.125 5.458,1.417 0.635,0.292 10 false GSW3

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 Connected Services)>PRECAUTION202107,999999,_56,_078380,_0482056,RM100000001WZWL,

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.

for Type A: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>PRECAUTION201906,999999,_58,_079257,_0387732,RM100000001IMN3,

for Type B: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>PRECAUTION201902,999999,_58,_079257,_0385034,RM100000001GJPR,

for Type C: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>PRECAUTION201906,999999,_58,_079257,_0396679,RM100000001IJ80,

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

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 BATTERY201902,999999,_V1,_081196,_0393338,RM100000001HX6Q,

When disconnecting and reconnecting the battery.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE201906,999999,_V1,_081196,_0393338,RM100000001JBY9,

HINT:: When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.; Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART201906,999999,_V1,_081196,_0393338,RM100000001IWEY,

PROCEDURE

1.CHECK DTC (AIRBAG SYSTEM)

Turn the ignition switch to ON.

Connect the GTS to the DLC3.

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

Turn the GTS on.

Check the DTC of "AIRBAG SYSTEM".

for Type A: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0387732,RM100000001H9LE,

for Type B: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,

for Type C: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>DTC CHECK / CLEAR201906,999999,_58,_079257,_0396679,RM100000001IJ88,

OK:: No DTCs are output.

Result:

Proceed to
OK
NG

2.CHECK DTC

GO TO AIRBAG SYSTEM

for Type A: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>DIAGNOSTIC TROUBLE CODE CHART201906,999999,_58,_079257,_0387732,RM100000001IMNH,

for Type B: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DIAGNOSTIC TROUBLE CODE CHART201902,999999,_58,_079257,_0385034,RM100000001GJQ2,

for Type C: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>DIAGNOSTIC TROUBLE CODE CHART201906,999999,_58,_079257,_0396679,RM100000001IJ8C,

2.CHECK DTC

Turn the ignition switch to ON.

Connect the GTS to the DLC3.

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

Turn the GTS on.

Check for DTCs and check that no DTCs are output.

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS SYSTEM (for Toyota Connected Services)>DTC CHECK / CLEAR202107,999999,_56,_078380,_0482056,RM100000001WZWW,

Body Electrical > Telematics > Trouble Codes: 50001 459

OK:: No DTCs are output.

Result:

Proceed to
OK
NG

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201902,999999,_V1,_078841,_0386803,RM100000001GTWY,

3.CHECK TELEMATICS TRANSCEIVER (GSW SIGNAL)

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 1.573,0.26 2.01,0.51 0.438,0.25 10 false N164 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 (for RHD)>REMOVAL202107,999999,_56,_078380,_0483831,RM100000001X92P,

Check the input waveform.

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 sensor assembly connectors are connected.)

Reference Waveform:

Item	Condition
Tester connection	N164-13 (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

4.REPLACE TELEMATICS TRANSCEIVER

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

4.REPLACE TELEMATICS TRANSCEIVER

Replace the telematics transceiver with a new one.

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS TRANSCEIVER (for RHD)>REMOVAL202107,999999,_56,_078380,_0483831,RM100000001X92P,

Result:

Proceed to
NEXT

PERFORM REGISTRATION

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS SYSTEM (for Toyota Connected Services)>REGISTRATION202107,999999,_56,_078380,_0482056,RM100000001WZWQ,

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

Disconnect the N164 telematics transceiver connector.

Disconnect the N45 airbag sensor assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N164-13 (GSW) - N45-23 (GSW3)	Always	Below 1 Ω
N164-13 (GSW) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL201906,999999,_58,_079257,_0384942,RM100000001IN22,

REPAIR OR REPLACE HARNESS OR CONNECTOR