Emergency Call Switch Illumination Circuit [09/2019 - ]: Procedure

1. Choose the model to be inspected.

   Result

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

Result: 

B 

See step  4

Result: 

A 

See step  2

1. Disconnect the K140 DCM (telematics transceiver) connector.
2. Disconnect the V14 roof console box sub-assembly (manual (SOS) switch) connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   V14-13 (RRID) - Body Ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K140-3 (SIG-) - V14-16 (GND3)	Always	Below 1 Ω
   K140-3 (SIG-) or V14-16 (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  3

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

   Refer to REMOVAL [06/2017 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Apply battery voltage to the connector and check that the roof console box assembly comes on.

   OK

   Measurement Condition	Condition	Specified Condition
   Battery positive (+) → V14-13 (RRID) Battery negative (-) → V14-16 (GND3)	Always	Manual (SOS) switch illumination cones on

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  6

Result: 

NG 

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

1. Disconnect the K140 DCM (telematics transceiver) connector.
2. Disconnect the V18 roof console box sub-assembly (manual (SOS) switch) connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   V18-9 (RRID) - Body Ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K140-3 (SIG-) - V18-12 (GND3)	Always	Below 1 Ω
   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  5

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

   Refer to REMOVAL [06/2017 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Apply battery voltage to the connector and check that the roof console box assembly comes on.

   OK

   Measurement Condition	Condition	Specified Condition
   Battery positive (+) → V18-9 (RRID) Battery negative (-) → V18-13 (GND3)	Always	Manual (SOS) switch illumination cones on

   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. 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 - ]