DTC B15C5-11: Emergency Call Switch Circuit Short to Ground; DTC B15C5-13: Emergency Call Switch Circuit Open [09/2019 - ]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and wait for 10 seconds or more.
4. Turn the Techstream 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 [09/2019 - 03/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2020 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 08/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - ] 

Result: 

NG 

See step  2

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/ Sliding Roof	A
   w/o Sliding Roof	B

Result: 

B 

See step  5

Result: 

A 

See step  3

1. Remove the roof console box sub-assembly (manual (SOS) switch).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Roof Console Box Sub-assembly (Manual (SOS) Switch))

   Refer to REMOVAL [06/2017 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   24 (SIG1) - 16 (GND3)	Manual (SOS) switch not operated	410 to 414 Ω
   24 (SIG1) - 16 (GND3)	Manual (SOS) switch operated	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH). Refer to  REMOVAL [06/2017 - ] 

Result: 

OK 

See step  4

1. Disconnect the K140 DCM (telematics transceiver) connector.
2. Disconnect the V14 roof console box sub-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
   K140-21 (SIG1) - V14-24 (SIG1)	Always	Below 1 Ω
   K140-3 (SIG-) - V14-16 (GND3)	Always	Below 1 Ω
   K140-21 (SIG1) or V14-24 (SIG1) - Body ground	Always	10 kΩ or higher
   K140-3 (SIG-) or V14-16 (GND3) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  7

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Remove the roof console box sub-assembly (manual (SOS) switch).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Roof Console Box Sub-assembly (Manual (SOS) Switch))

   Refer to REMOVAL [06/2017 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   17 (SIG1) - 12 (GND3)	Manual (SOS) switch not operated	410 to 414 Ω
   17 (SIG1) - 12 (GND3)	Manual (SOS) switch operated	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH). Refer to  REMOVAL [06/2017 - ] 

Result: 

OK 

See step  6

1. Disconnect the K140 DCM (telematics transceiver) connector.
2. Disconnect the V18 roof console box sub-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
   K140-21 (SIG1) - V18-17 (SIG1)	Always	Below 1 Ω
   K140-3 (SIG-) - V18-12 (GND3)	Always	Below 1 Ω
   K140-21 (SIG1) or V18-17 (SIG1) - Body ground	Always	10 kΩ or higher
   K140-3 (SIG-) or V18-12 (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  7

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

   Refer to REMOVAL [09/2019 - 10/2020] , or refer to REMOVAL [10/2020 - ]

   NOTE:

   • The engine 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 [09/2019 - ]