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DTC B15C5: Manual Button Malfunction [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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. Perform "Health Check" and check for current DTCs. Refer to HEALTH CHECK [08/2013 - ] .

      Result

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

    B → See step   6 

    A: Go to next step 

  2. INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH) 
    1. Disconnect the T11 roof console box assembly connector.
      GTY397987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T11-13 (SIG1) - T11-9 (GND3) Manual (SOS) switch not pressed 410 to 414 Ω
      T11-13 (SIG1) - T11-9 (GND3) Manual (SOS) switch pressed 81 to 83 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Roof Console Box Assembly)

    NG → See step   16 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX ASSEMBLY) 
    1. Disconnect the H101 DCM (Telematics Transceiver) connector.
    2. Disconnect the T11 roof console box assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H101-26 (SIG-) - T11-9 (GND3) Always Below 1 Ω
      H101-26 (SIG-) - Body ground Always 10 kΩ or higher
      H101-27 (SIG1) - T11-13 (SIG1) Always Below 1 Ω
      H101-27 (SIG1) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ] .
      NOTE:
      • The power switch must be off.
      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

    NEXT: Go to next step 

  5. PERFORM PRL UPDATE 
    1. Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .

    NEXT → See step   15 

  6. READ VALUE USING TECHSTREAM (MANUAL (SOS) SWITCH OPERATION) 
    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. 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.
      TELEMATICS

      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* -
      • *: 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

    B → See step   8 

    A: Go to next step 

  7. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ] .
      NOTE:
      • The power switch must be off.
      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

    NEXT → See step   15 

  8. INSPECT DCM (TELEMATICS TRANSCEIVER) (SIG1 VOLTAGE) 
    1. Remove the DCM (Telematics Transceiver) but do not disconnect the connectors. Refer to REMOVAL [08/2013 - ] .
      GTY403749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      H101-27 (SIG1) - H101-26 (SIG-) Power switch on (IG), manual (SOS) switch not pressed 1.5 to 2.0 V
      TEXT IN ILLUSTRATION

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

    NG → See step   11 

    OK: Go to next step 

  9. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ] .
      NOTE:
      • The power switch must be off.
      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

    NEXT: Go to next step 

  10. PERFORM PRL UPDATE 
    1. Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .

    NEXT → See step   15 

  11. INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH) 
    1. Disconnect the T11 roof console box assembly connector.
      GTY397987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T11-13 (SIG1) - T11-9 (GND3) Manual (SOS) switch not pressed 410 to 414 Ω
      T11-13 (SIG1) - T11-9 (GND3) Manual (SOS) switch pressed 81 to 83 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Roof Console Box Assembly)

    NG → See step   16 

    OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX ASSEMBLY) 
    1. Disconnect the H101 DCM (Telematics Transceiver) connector.
    2. Disconnect the T11 roof console box assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H101-27 (SIG1) - T11-13 (SIG1) Always Below 1 Ω
      H101-27 (SIG1) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  13. REPLACE DCM (TELEMATICS TRANSCEIVER) 
    1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ] .
      NOTE:
      • The power switch must be off.
      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

    NEXT: Go to next step 

  14. PERFORM PRL UPDATE 
    1. Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .

    NEXT → See step   15 

  15. PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [08/2013 - ] 
  16. REPLACE ROOF CONSOLE BOX ASSEMBLY. Refer to  REMOVAL [08/2013 - ] 
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