DTC B15C5: Manual Button Malfunction [03/2017 - 06/2017]: 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.
4. Turn the Techstream on.
5. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

6. Recheck for DTCs.

   Body Electrical > Telematics > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1570, B1571 and B15C5 are output	A
   DTC B15C5 is output (DTC B1570 and B1571 are not output)	B

Result: 

B 

See step  5

Result: 

A 

See step  2

1. Disconnect the V14 roof console box sub-assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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 pressed	410 to 414 Ω
   24 (SIG1) - 16 (GND3)	Manual (SOS) switch pressed	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  3

1. Disconnect the K12 DCM (Telematics Transceiver) connector.
2. Disconnect the V14 roof console box sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K12-26 (SIG-) - V14-16 (GND3)	Always	Below 1 Ω
   K12-26 (SIG-) or V14-16 (GND3) - Body ground	Always	10 kΩ or higher
   K12-27 (SIG1) - V14-24 (SIG1)	Always	Below 1 Ω
   K12-27 (SIG1) or V14-24 (SIG1) - 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).

   Refer to REMOVAL [03/2017 - 09/2019]

   NOTE:

   • The engine switch must be off.
   • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [03/2017 - 09/2019] 

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.
4. Turn the Techstream on.
5. Enter the following menus: Body Electrical / Telematics / Data List.
6. Check that the manual (SOS) switch condition observed on the Techstream changes according to manual (SOS) switch operation.

   Body Electrical > Telematics > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Emergency Switch	Manual (SOS) switch	OFF or ON	OFF: Manual (SOS) switch not pressed ON: Manual (SOS) switch pressed*	-

   Body Electrical > Telematics > Data List 

   Tester Display
   Emergency Switch

   1. *: Pressing the manual (SOS) switch will connect to the call center.

   Result

   Result	Proceed to
   Techstream display changes when turning the manual (SOS) switch ON/OFF	A
   Techstream display does not change when turning the manual (SOS) switch ON/OFF	B

Result: 

B 

See step  7

Result: 

A 

See step  6

1. Replace the DCM (Telematics Transceiver).

   Refer to REMOVAL [03/2017 - 09/2019]

   NOTE:

   • The engine switch must be off.
   • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [03/2017 - 09/2019] 

1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.

   Refer to REMOVAL [03/2017 - 09/2019]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (DCM (Telematics Transceiver))

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   K12-27 (SIG1) - K12-26 (SIG-)	Engine switch on (IG), manual (SOS) switch not pressed	1.5 to 2.0 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  9

Result: 

OK 

See step  8

1. Replace the DCM (Telematics Transceiver).

   Refer to REMOVAL [03/2017 - 09/2019]

   NOTE:

   • The engine switch must be off.
   • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [03/2017 - 09/2019] 

1. Disconnect the V14 roof console box sub-assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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 pressed	410 to 414 Ω
   24 (SIG1) - 16 (GND3)	Manual (SOS) switch pressed	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  10

1. Disconnect the K12 DCM (Telematics Transceiver) connector.
2. Disconnect the V14 roof console box sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K12-27 (SIG1) - V14-24 (SIG1)	Always	Below 1 Ω
   K12-27 (SIG1) or V14-24 (SIG1) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

1. Replace the DCM (Telematics Transceiver).

   Refer to REMOVAL [03/2017 - 09/2019]

   NOTE:

   • The engine switch must be off.
   • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [03/2017 - 09/2019]