DTC B15C5-11: Emergency Call Switch Circuit Short to Ground; DTC B15C5-13: Emergency Call Switch Circuit Open [10/2022 - ]: Procedure

Pre-procedure1

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

   Procedure1

2. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

   Result

   Proceed to
   NEXT

   Post-procedure1

3. None

Result: 

NEXT 

See step  2

1. Check for DTCs.

   Body Electrical > Telematics > Trouble Codes 

   Result

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

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

B 

See step  3

Pre-procedure1

1. Remove the map light assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to REMOVAL [11/2021 - ]

   Procedure1

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   31 (SIG1) - 32 (GND3)	Manual (SOS) switch not pressed	410 to 414 Ω
   31 (SIG1) - 32 (GND3)	Manual (SOS) switch pressed	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

REPLACE MAP LIGHT ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  4

Pre-procedure1

1. Disconnect the G163*1 or G164*2 DCM (telematics transceiver) connector.
   1. *1: w/o Advanced Drive System
   2. *2: w/ Advanced Drive System
2. Disconnect the N9 map light assembly connector.

   Procedure1

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

   Standard Resistance

   W/O ADVANCED DRIVE SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   G163-21 (SIG1) - N9-31 (SIG1)	Always	Below 1 Ω
   G163-3 (SIG-) - N9-32 (GND3)	Always	Below 1 Ω
   G163-21 (SIG1) - Body ground	Always	10 kΩ or higher
   G163-3 (SIG-) - Body ground	Always	10 kΩ or higher

   W/ ADVANCED DRIVE SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   G164-21 (SIG1) - N9-31 (SIG1)	Always	Below 1 Ω
   G164-3 (SIG-) - N9-32 (GND3)	Always	Below 1 Ω
   G164-21 (SIG1) - Body ground	Always	10 kΩ or higher
   G164-3 (SIG-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Replace the DCM (Telematics Transceiver).

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

   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 [10/2022 - ]