SAFETY CONNECT SYSTEM, Diagnostic DTC:B1570

DTC Code DTC Name
B1570 Manual (SOS) Switch Red Indicator Malfunction

DESCRIPTION

This DTC is stored when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch.

The manual (SOS) switch red indicator illuminates for 2 seconds and goes off when the power switch is turned on (IG). If a malfunction in the safety connect system is detected, the manual (SOS) switch red indicator will illuminate.

However, the manual (SOS) switch red indicator may not illuminate when this DTC is set.

Tech Tips

The manual (SOS) switch red indicator may not operate to indicate another DTC has been set, therefore voice guidance is provided.

DTC No. DTC Detection Condition Trouble Area
B1570 Current for manual (SOS) switch red indicator reaches malfunction criteria for 10 seconds when power switch is on (IG).

  • Roof console box assembly

  • Wire harness or connector

  • DCM (Telematics Transceiver)

WIRING DIAGRAM

A011Y8ME02

INSPECTION PROCEDURE

PROCEDURE

  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 Click here.

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

      DTC B1570 is output

      (DTC B1571 and B15C5 are not output)

      		 B
    B

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

    A

  2. INSPECT ROOF CONSOLE BOX ASSEMBLY (RED INDICATOR)

    1. Disconnect the S12 roof console box assembly connector.

      A011Z0RE27

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

    3. Connect the positive (+) lead to terminal S12-19 (IND1) 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 red indicator comes on.

      OK
      Red indicator comes on.
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly)
    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 power 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 RED INDICATOR CONDITION)

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

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

    REPLACE DCM (TELEMATICS TRANSCEIVER) Click here

    A

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

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

      A011XHRE18

    2. Connect the positive lead of a voltmeter to terminal S12-19 (IND1), 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 power switch is turned on (IG). 0 V when the power switch is off.
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly)
    NG

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

    OK

    REPLACE ROOF CONSOLE BOX ASSEMBLY Click here

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

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

      A011Y43E74

    2. Connect the positive lead of a voltmeter to terminal I135-11 (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.
      Text in Illustration
      *a

      Component with harness connected

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

      A011Y43E74

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I135-11 (IND1) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *a

      Component with harness connected

      (DCM (Telematics Transceiver))
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. REPLACE DCM (TELEMATICS TRANSCEIVER)

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

      Note

      • The power switch must be off.

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

    NEXT

    PERFORM DCM ACTIVATION Click here