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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 98 (Safety Connect System - Diagnostic Codes & Symptom Tests (Hybrid)) >> SAFETY CONNECT SYSTEM (for HV Model) >> DTC B1570: Manual (SOS) Switch Red Indicator Malfunction [04/2018 - 08/2020] >> Procedure

DTC B1570: Manual (SOS) Switch Red Indicator Malfunction [04/2018 - 08/2020]: Procedure

WARNING: This page is about a different variant/trim than selected.
  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  10

    Result: 

    A 

    See step  2

  2. CHECK DTC 
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power 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 B1570 is output (DTC B1571 and B15C5 are not output) B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  3

  3. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (RED INDICATOR) 
    1. Disconnect the O10 roof console box sub-assembly connector.
      GTY753356Courtesy 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 10 (IND1) 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 red indicator comes on.

      OK

      Red indicator comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) 
    1. Disconnect the G9 DCM (Telematics Transceiver) connector.
    2. Disconnect the O10 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
      G9-26 (SIG-) - O10-16 (GND3) Always Below 1 Ω
      G9-26 (SIG-) or O10-16 (GND3) - Body ground Always 10 kΩ or higher
      G9-11 (IND1) - O10-10 (IND1) Always Below 1 Ω
      G9-11 (IND1) or O10-10 (IND1) - 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 [04/2018 - 08/2020]

      NOTE:
      • The power 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 [04/2018 - 08/2020] 

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

      Refer to SYSTEM DESCRIPTION [04/2018 - 08/2020]

      Result

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

    Result: 

    B 

    See step  19

    Result: 

    A 

    See step  7

  7. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (RED INDICATOR INPUT VOLTAGE) 
    1. Remove the roof console box sub-assembly but do not disconnect the connectors.

      Refer to REMOVAL [04/2018 - ]

      GTY914607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Roof Console Box Sub-assembly)
    2. Connect the positive lead of a voltmeter to terminal O10-10 (IND1), and the negative lead to terminal O10-16 (GND3).
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the power switch is turned on (IG).

      0 V when the power switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

    Result: 

    NG 

    See step  8

  8. INSPECT DCM (TELEMATICS TRANSCEIVER) (RED INDICATOR OUTPUT VOLTAGE) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.

      Refer to REMOVAL [04/2018 - ]

      GTY915360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))
    2. Connect the positive lead of a voltmeter to terminal G9-11 (IND1), and the negative lead to body ground.
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the power switch is turned on (IG).

      0 V when the power 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.

      Refer to REMOVAL [04/2018 - 08/2020]

      GTY915360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G9-11 (IND1) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  19

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. CHECK DTC 
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power 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 B1570 is output (DTC B1571 and B15C5 are not output) B

    Result: 

    B 

    See step  14

    Result: 

    A 

    See step  11

  11. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (RED INDICATOR) 
    1. Disconnect the O9 roof console box sub-assembly connector.
      GTY768180Courtesy 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 7 (IND1) 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 red indicator comes on.

      OK

      Red indicator comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY) 
    1. Disconnect the G9 DCM (Telematics Transceiver) connector.
    2. Disconnect the O9 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
      G9-26 (SIG-) - O9-12 (GND3) Always Below 1 Ω
      G9-26 (SIG-) or O9-12 (GND3) - Body ground Always 10 kΩ or higher
      G9-11 (IND1) - O9-7 (IND1) Always Below 1 Ω
      G9-11 (IND1) or O9-7 (IND1) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  13

  13. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver).

      Refer to REMOVAL [04/2018 - 08/2020]

      NOTE:
      • The power 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 [04/2018 - 08/2020] 

  14. CHECK ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH RED INDICATOR CONDITION) 
    1. Confirm the red indicator status after the power switch is turned on (IG).

      Refer to SYSTEM DESCRIPTION [04/2018 - 08/2020]

      Result

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

    Result: 

    B 

    See step  19

    Result: 

    A 

    See step  15

  15. INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (RED INDICATOR INPUT VOLTAGE) 
    1. Remove the roof console box sub-assembly but do not disconnect the connectors.

      Refer to REMOVAL [04/2018 - ]

      GTY934761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Roof Console Box Sub-assembly)
    2. Connect the positive lead of a voltmeter to terminal O9-7 (IND1), and the negative lead to terminal O9-12 (GND3).
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the power switch is turned on (IG).

      0 V when the power switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

    Result: 

    NG 

    See step  16

  16. INSPECT DCM (TELEMATICS TRANSCEIVER) (RED INDICATOR OUTPUT VOLTAGE) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.

      Refer to REMOVAL [04/2018 - 08/2020]

      GTY915360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))
    2. Connect the positive lead of a voltmeter to terminal G9-11 (IND1), and the negative lead to body ground.
    3. Measure the voltage.

      Standard

      1.0 to 8.5 V for 2 seconds after the power switch is turned on (IG).

      0 V when the power switch is off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.

      Refer to REMOVAL [04/2018 - 08/2020]

      GTY915360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (DCM (Telematics Transceiver))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G9-11 (IND1) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  18

  18. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver).

      Refer to REMOVAL [04/2018 - 08/2020]

      NOTE:
      • The power 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 [04/2018 - 08/2020] 

  19. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver).

      Refer to REMOVAL [04/2018 - 08/2020]

      NOTE:
      • The power 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 [04/2018 - 08/2020] 

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