TELEMATICS SYSTEM, Diagnostic DTC:B1570

DTC Code DTC Name
B1570 Red LED Error

DESCRIPTION

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

The manual (SOS) switch indicator (red) illuminates for 10 seconds and turns off when the ignition switch is turned to ON.

If a malfunction in the telematics system is detected, the manual (SOS) switch indicator (red) will illuminate. However, the manual (SOS) switch indicator (red) may not illuminate when this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1570

Red LED Error

Current for the manual (SOS) switch indicator (red) exceeds malfunction threshold for 20 seconds when the ignition switch is ON.

  • Telematics transceiver

  • Map light assembly (manual (SOS) switch)

  • Wire harness or connector

WIRING DIAGRAM

E353337E03

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

Tip:

If DTC B1570 is stored, the manual (SOS) switch indicator (red) may not illuminate when another DTC is stored.

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

      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) (RED INDICATOR)

    1. E303110C05

      *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 the batteries to terminal 11 (IND1) 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 (red) illuminates.

      OK

      Manual (SOS) switch indicator (red) 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

      M38-11 (IND1) - Q16-11 (IND1)

      Always

      Below 1 Ω

      M38-11 (IND1) or Q16-11 (IND1) - 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