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

E353337E04

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

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

    1. E303110C06

      *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 12 (IND2) and a negative (-) lead to terminal 10 (GND) 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

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

    1. Disconnect the M38 telematics transceiver connector.

    2. Disconnect the Q16 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

      M38-12 (IND2) - Q16-12 (IND2)

      Always

      Below 1 Ω

      M38-12 (IND2) or Q16-12 (IND2) - Body ground

      Always

      10 kΩ or higher

      M38-26 (SIG-) - Q16-10 (GND)

      Always

      Below 1 Ω

      M38-26 (SIG-) or Q16-10 (GND) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TELEMATICS TRANSCEIVER

    1. Replace the telematics transceiver with a new one.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM REGISTRATION

    Click here