DTC B15C5-11: Emergency Call Switch Circuit Short to Ground; DTC B15C5-13: Emergency Call Switch Circuit Open [12/2019 - ]: Procedure

1. Turn the ignition switch off.
2. Connect the GTS to the DLC3.
3. Turn the ignition switch to ON and wait for 10 seconds or more.
4. Turn the GTS on.
5. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

6. Check for DTCs and check that no DTCs are output.

   Body Electrical > Telematics > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

Result: 

NG 

See step  2

1. Remove the map light assembly (manual (SOS) switch).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Map Light Assembly (Manual (SOS) Switch))

   Refer to REMOVAL [12/2019 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   7 (SIG1) - 1 (GND3)	Manual (SOS) switch not operated	410 to 414 Ω
   7 (SIG1) - 1 (GND3)	Manual (SOS) switch operated	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) 

Refer to REMOVAL [12/2019 - ]

Result: 

OK 

See step  3

1. Disconnect the H11 DCM (telematics transceiver) connector.
2. Disconnect the R11 map light assembly (manual (SOS) switch) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H11-21 (SIG1) - R11-7 (SIG1)	Always	Below 1 Ω
   H11-3 (SIG-) - R11-1 (GND3)	Always	Below 1 Ω
   H11-21 (SIG1) or R11-7 (SIG1) - Body ground	Always	10 kΩ or higher
   H11-3 (SIG-) or R11-1 (GND3) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace the DCM (telematics transceiver) with a new one.

   Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

   NOTE:

   • The ignition switch must be off.
   • Do not exchange the DCM (telematics transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION 

Refer to DCM ACTIVATION [12/2019 - ]