TELEMATICS TELEMATICS SYSTEM 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 turned to 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 turned to ON	· Map light assembly · Harness or connector · Telematics transceiver

WIRING DIAGRAM

0.573,2.073 0.969,2.26 0.396,0.188 10 false E12 5.302,2.083 5.698,2.271 0.396,0.188 10 false Q9 0.573,2.24 2.052,2.427 1.479,0.188 10 false Telematics Transceiver 5.302,2.25 6.771,2.521 1.469,0.271 10 false Map Light Assembly 5.375,0.792 5.771,0.979 0.396,0.188 10 false SIG1 5.396,1.594 5.823,1.781 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 5.135,0.667 5.344,0.854 0.208,0.188 10 false 5 5.135,1.49 5.344,1.677 0.208,0.188 10 false 40

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>PRECAUTION202111,202203,_56,_111824,_0502894,RM100000001ZC5D,202203,202303,_56,_111824,_0502894,RM1000000022K49,202303,202406,_56,_111824,_0502894,RM100000002AVKR,202406,202409,_56,_111824,_0502894,RM100000002MVZP,202409,999999,_56,_111824,_0502894,RM100000002OR19,

·

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 TROUBLESHOOTING202111,999999,_V1,_111779,_0504974,RM100000001ZKRQ,

B

2.INSPECT MAP LIGHT ASSEMBLY

a.

0.479,1.25 0.375,1.604 false 2.438,1.01 2.75,0.427 false 0.188,0.167 0.5,0.365 0.313,0.198 10 false *a 0.219,1.646 0.667,1.896 0.448,0.25 10 false GND3 2.802,0.281 3.25,0.531 0.448,0.25 10 false SIG1

*a	Component without harness connected (Map Light Assembly)

Remove the map light assembly.

Click hereAudio / Visual / Telematics>TELEMATICS>MAYDAY SWITCH>REMOVAL202111,202303,_56,_111824,_0500298,RM100000001Z28U,202303,202406,_56,_111824,_0500298,RM100000002A267,202406,202409,_56,_111824,_0500298,RM100000002KROU,202409,999999,_56,_111824,_0500298,RM100000002O9KX,

b.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
5 (SIG1) - 40 (GND3)	Emergency call switch not operated	410 to 414 Ω
5 (SIG1) - 40 (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 hereAudio / Visual / Telematics>TELEMATICS>MAYDAY SWITCH>REMOVAL202111,202303,_56,_111824,_0500298,RM100000001Z28U,202303,202406,_56,_111824,_0500298,RM100000002A267,202406,202409,_56,_111824,_0500298,RM100000002KROU,202409,999999,_56,_111824,_0500298,RM100000002O9KX,

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

a.

Disconnect the E12 telematics transceiver connector.

b.

Disconnect the Q9 map light assembly connector.

c.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(E12,Q9)Location & Routingewd_type=routing;type=c,c;code=E12,Q9 Click Connector(E12)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Telephone Transceiverewd_type=component;type=c;code=E12;pinno=21,3 Click Connector(Q9)Body>Roof Wire>Map Light Assemblyewd_type=component;type=c;code=Q9;pinno=5,40
E12-21 (SIG1) - Q9-5 (SIG1)	Always	Below 1 Ω
E12-3 (SIG-) - Q9-40 (GND3)	Always	Below 1 Ω
E12-21 (SIG1) or Q9-5 (SIG1) - Body ground	Always	10 kΩ or higher
E12-3 (SIG-) or Q9-40 (GND3) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

OK

REPLACE TELEMATICS TRANSCEIVER

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NG

REPAIR OR REPLACE HARNESS OR CONNECTOR