SAFETY CONNECT SYSTEM, Diagnostic DTC:B1571

DTC Code DTC Name
B1571 Manual (SOS) Switch Green Indicator Malfunction

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the engine switch is turned on (IG).

If the safety connect system is not active, the manual (SOS) switch green indicator will turn off.

If the safety connect system is active, the manual (SOS) switch green indicator will blink while communicating with the call center.

DTC No. DTC Detection Condition Trouble Area
B1571 Current for manual (SOS) switch green indicator reaches malfunction criteria for 10 seconds when engine switch is on (IG).

  • Roof console box assembly

  • Wire harness or connector

  • DCM (Telematics Transceiver)

WIRING DIAGRAM

A01I0NAE02

INSPECTION PROCEDURE

PROCEDURE


  1. 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. Perform "Health Check" and check for current DTCs Click here.

      Result
      Result Proceed to
      DTC B1570, B1571 and B15C5 are output A

      DTC B1571 is output

      (DTC B1570 and B15C5 are not output)

      		 B

    B

    INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION) Click here

    A

  2. INSPECT ROOF CONSOLE BOX ASSEMBLY (GREEN INDICATOR)


    1. A01HZSIE28
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly)

      Disconnect the S12 roof console box assembly connector.

    2. Connect 2 dry-cell batteries (1.5 V each) in series.

    3. Connect the positive (+) lead to terminal S12-18 (IND2) and the negative (-) lead to terminal S12-16 (GND3) of the roof console box assembly connectors.

    4. Check if the illumination for the manual (SOS) switch green indicator comes on.

      OK
      Green indicator comes on.

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX ASSEMBLY)


    1. Disconnect the I135 DCM (Telematics Transceiver) connector.

    2. Disconnect the S12 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
      I135-26 (SIG-) - S12-16 (GND3) Always Below 1 Ω
      I135-26 (SIG-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE DCM (TELEMATICS TRANSCEIVER)


    1. Replace the DCM (Telematics Transceiver) Click here.

      Note


      • The engine switch must be off.

      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.


    NEXT

    PERFORM DCM ACTIVATION Click here

  5. INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION)


    1. Confirm the green indicator status after the engine switch is turned on (IG) Click here.

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

    B

    REPLACE DCM (TELEMATICS TRANSCEIVER) Click here

    A

  6. INSPECT ROOF CONSOLE BOX ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE)


    1. A01HZJEE19
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly)

      Remove the roof console box assembly but do not disconnect the connectors Click here.

    2. Connect the positive lead of a voltmeter to terminal S12-18 (IND2), and the negative lead to terminal S12-16 (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.

    NG

    INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE) Click here

    OK

    REPLACE ROOF CONSOLE BOX ASSEMBLY Click here

  7. INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE)


    1. A01I0ZXE75
      Text in Illustration
      *a

      Component with harness connected

      (DCM (Telematics Transceiver))

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

    2. Connect the positive lead of a voltmeter to terminal I135-12 (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.

    NG

    CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND) Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND)


    1. A01I0ZXE75
      Text in Illustration
      *a

      Component with harness connected

      (DCM (Telematics Transceiver))

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I135-12 (IND2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. REPLACE DCM (TELEMATICS TRANSCEIVER)


    1. Replace the DCM (Telematics Transceiver) Click here.

      Note


      • The engine switch must be off.

      • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.


    NEXT

    PERFORM DCM ACTIVATION Click here