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 power switch is turned on (IG).

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. Detection Item DTC Detection Condition Trouble Area
B1571 Green LED Error Current for the manual (SOS) switch indicator (green) exceeds malfunction threshold for 20 seconds when the power switch is on (IG).

  • Telematics transceiver

  • Map light assembly (manual (SOS) switch)

  • Wire harness or connector

WIRING DIAGRAM

A0022AKE25
*1 GREEN
*2 Map Light Assembly (Manual (SOS) Switch)
*3 Telematics Transceiver

CAUTION / NOTICE / HINT

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 power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) and wait for 20 seconds.

    4. Turn the GTS on.

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

      Click here


      Body Electrical > Telematics > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. INSPECT MAP LAMP ASSEMBLY (INPUT VOLTAGE)


    1. A0021XXC20
      *a

      Component with harness connected

      (Map Light Assembly (Manual (SOS) Switch))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      7 (IND2) - 9 (GND3)

      2 seconds after power switch turned on (IG)

      → Power switch off

      8.5 to 10 V

      → Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)) Click here

    OK

  3. INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) (GREEN INDICATOR)


    1. A0021HZC14
      *a

      Component without harness connected

      (Map Light Assembly (Manual (SOS) Switch))

      Remove the map light assembly (manual (SOS) switch).

      Click here

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

    3. Connect a positive (+) lead from batteries to terminal 7 (IND2) and a negative (-) lead to terminal 9 (GND3) of the map light assembly (manual (SOS) switch) connector.

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

      OK
      Manual (SOS) switch indicator (green) illuminates.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH))


    1. Disconnect the K158 telematics transceiver connector.

    2. Disconnect the S4 map light 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
      K158-12 (IND2) - S4-7 (IND2) Always Below 1 Ω
      K158-12 (IND2) or S4-7 (IND2) - Body ground Always 10 kΩ or higher
      K158-26 (SIG-) - S4-9 (GND3) Always Below 1 Ω
      K158-26 (SIG-) or S4-9 (GND3) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here