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DTC B1571: Manual (SOS) Switch Green Indicator Malfunction [06/2017 - 09/2019]: Procedure

  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

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

    Result: 

    B 

    See step  11

    Result: 

    A 

    See step  2

  2. CHECK DTC 
    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 B1571 is output
      (DTC B1570 and B15C5 are not output)      		 B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  3

  3. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (GREEN INDICATOR) 
    1. Disconnect the V14 roof console box sub-assembly connector.
      GTY753357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Roof Console Box Sub-assembly)
    2. Connect 2 dry-cell batteries (1.5 V each) in series.
    3. Connect the positive (+) lead to terminal 11 (IND2) and the negative (-) lead to terminal 16 (GND3) of the roof console box sub-assembly connector.
    4. Check if the illumination for the manual (SOS) switch green indicator comes on.

      OK

      Green indicator comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

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

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) 
    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
      K12-12 (IND2) - V14-11 (IND2) Always Below 1 Ω
      K12-12 (IND2) or V14-11 (IND2) - 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

  5. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    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] 

  6. CHECK ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION) 
    1. Confirm the green indicator status after the engine switch is turned on (IG).

      Refer to SYSTEM DESCRIPTION [03/2017 - 09/2019]

      Result

      Result Proceed to
      Green indicator remains off A
      Green indicator remains on B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  7

  7. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE) 
    1. Remove the roof console box sub-assembly but do not disconnect the connectors.
      GTY773908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Roof Console Box Sub-assembly)

      Refer to REMOVAL [03/2017 - ]

    2. Connect the positive lead of a voltmeter to terminal V14-11 (IND2), and the negative lead to terminal V14-16 (GND3).
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the engine switch is turned on (IG) and red indicator has turned off.

      0 V when the engine switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    See step  8

  8. INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.
      GTY752757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))

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

    2. Connect the positive lead of a voltmeter to terminal K12-12 (IND2), and the negative lead to body ground.
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the engine switch is turned on (IG) and red indicator has turned off.

      0 V when the engine switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.
      GTY752757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      K12-12 (IND2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  10

  10. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    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] 

  11. CHECK DTC 
    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 B1571 is output
      (DTC B1570 and B15C5 are not output)      		 B

    Result: 

    B 

    See step  15

    Result: 

    A 

    See step  12

  12. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (GREEN INDICATOR) 
    1. Disconnect the V18 roof console box sub-assembly connector.
      GTY768184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Roof Console Box Sub-assembly)
    2. Connect 2 dry-cell batteries (1.5 V each) in series.
    3. Connect the positive (+) lead to terminal 8 (IND2) and the negative (-) lead to terminal 12 (GND3) of the roof console box sub-assembly connector.
    4. Check if the illumination for the manual (SOS) switch green indicator comes on.

      OK

      Green indicator comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

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

    Result: 

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) 
    1. Disconnect the K12 DCM (Telematics Transceiver) connector.
    2. Disconnect the V18 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-) - V18-12 (GND3) Always Below 1 Ω
      K12-26 (SIG-) or V18-12 (GND3) - Body ground Always 10 kΩ or higher
      K12-12 (IND2) - V18-8 (IND2) Always Below 1 Ω
      K12-12 (IND2) or V18-8 (IND2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    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] 

  15. CHECK ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION) 
    1. Confirm the green indicator status after the engine switch is turned on (IG).

      Refer to SYSTEM DESCRIPTION [03/2017 - 09/2019]

      Result

      Result Proceed to
      Green indicator remains off A
      Green indicator remains on B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  16

  16. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE) 
    1. Remove the roof console box sub-assembly but do not disconnect the connectors.
      GTY752208Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Roof Console Box Sub-assembly)

      Refer to REMOVAL [03/2017 - ]

    2. Connect the positive lead of a voltmeter to terminal V18-8 (IND2), and the negative lead to terminal V18-12 (GND3).
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the engine switch is turned on (IG) and red indicator has turned off.

      0 V when the engine switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    See step  17

  17. INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.
      GTY752757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))

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

    2. Connect the positive lead of a voltmeter to terminal K12-12 (IND2), and the negative lead to body ground.
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the engine switch is turned on (IG) and red indicator has turned off.

      0 V when the engine switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    See step  18

  18. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.
      GTY752757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      K12-12 (IND2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  19

  19. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    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] 

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