TELEMATICS SYSTEM, Diagnostic DTC:B1571

DTC Code DTC Name
B1571 Green LED Error

DESCRIPTION

This DTC is stored when the telematics transceiver detects an open or short in the manual (SOS) switch indicator (green) circuit of the manual (SOS) switch. The manual (SOS) switch indicator (green) illuminates after the ignition switch is turned to ON. If the telematics system is not active, the manual (SOS) switch indicator (green) will turn off. If the telematics system is active, the manual (SOS) switch indicator (green) will blink while communicating with the call center.

DTC No. DTC Detection Condition Trouble Area
B1571 Current for the manual (SOS) switch indicator (green) exceeds malfunction threshold for 20 seconds when the ignition switch is ON.

  • Telematics transceiver

  • Roof console box assembly (manual (SOS) switch)

  • Wire harness or connector

WIRING DIAGRAM

B000NS8E02

INSPECTION PROCEDURE

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Registration for Telematics System Click here.

PROCEDURE


  1. CHECK DTC


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and wait for 20 seconds.

    4. Turn the GTS on.

    5. Check for DTCs and check that no DTCs are output Click here.

      OK
      No DTCs are output.

    NG

    INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH) (INPUT VOLTAGE) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH) (INPUT VOLTAGE)


    1. B000J9QE38
      Text in Illustration
      *a

      Component with harness connected

      (Roof Console Box Assembly (Manual (SOS) Switch)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      17 (IND2) - 11 (GND3) 2 seconds after ignition switch turned ON → Ignition switch off 8.5 to 10 V → Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - ROOF CONSOLE BOX ASSEMBLY) Click here

    OK

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


    1. B000H6GE57
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly (Manual (SOS) Switch)

      Remove the roof console box assembly (manual (SOS) switch) Click here.

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

    3. Connect a positive (+) lead from the batteries to terminal 17 (IND2) and a negative (-) lead to terminal 11 (GND3) of the roof console box assembly (manual (SOS) switch) connector.

    4. Check if the manual (SOS) switch indicator (green) illuminates.

      OK
      Manual (SOS) switch indicator (green) illuminates.

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH) Click here

    OK

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


    1. Disconnect the I218 telematics transceiver connector.

    2. Disconnect the S7 roof console box assembly (manual (SOS) switch) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I218-12 (IND2) - S7-17 (IND2) Always Below 1 Ω
      I218-12 (IND2) or S7-17 (IND2) - Body ground Always 10 kΩ or higher
      I218-26 (SIG-) - S7-11 (GND3) Always Below 1 Ω
      I218-26 (SIG-) or S7-11 (GND3) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one Click here.


    NEXT

    PERFORM REGISTRATION Click here