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TELEMATICS SYSTEM(w/ Telematics Transceiver except G-BOOK), Diagnostic DTC:B1571

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DTC Code DTC Name
B1571 Green LED Error
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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 engine 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 engine switch is on (IG).

  • Telematics transceiver

  • Map light assembly (manual (SOS) switch)

  • Wire harness or connector
Table 1. *1 GREEN *2 Map Light Assembly (Manual (SOS) Switch) *3 Telematics Transceiver
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WIRING DIAGRAM

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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.

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PROCEDURE


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    CHECK DTC


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

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

    4. Turn the GTS on.

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

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      1. Body Electrical > Telematics > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

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    INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) (INPUT VOLTAGE)


    1. B0065UNC20
      *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 engine switch turned on (IG)

      → Engine switch off

      8.5 to 10 V

      → Below 1 V
      Result
      Proceed to
      OK
      NG

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


    1. B0066FDC14
      *a

      Component without harness connected

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

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

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    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

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


    1. Disconnect the O65 telematics transceiver connector.

    2. Disconnect the W4 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
      O65-12 (IND2) - W4-7 (IND2) Always Below 1 Ω
      O65-12 (IND2) or W4-7 (IND2) - Body ground Always 10 kΩ or higher
      O65-26 (SIG-) - W4-9 (GND3) Always Below 1 Ω
      O65-26 (SIG-) or W4-9 (GND3) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one.

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      Result
      Proceed to
      NEXT