TELEMATICS SYSTEM, Diagnostic DTC:B1570

DTC Code DTC Name
B1570 Red LED Error

DESCRIPTION

This DTC is stored when the telephone transceiver assembly 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 engine switch is turned on (IG).

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 engine switch on (IG).

  • Telephone transceiver assembly

  • Map light sub-assembly (manual (SOS) switch)

  • Harness or connector

WIRING DIAGRAM

B000WXDE15
*1 RED
*2 Manual (SOS) Switch
*3 Map Light Sub-assembly
*4 Telephone Transceiver Assembly

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

  • When replacing the telephone transceiver assembly, make sure to replace it with a new one.

Tech Tips

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

PROCEDURE


  1. CHECK FOR 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.

      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 SUB-ASSEMBLY (RED INDICATOR)


    1. B000Z8YC01
      *a

      Component without harness connected

      (Map Light Sub-assembly [Manual (SOS) Switch])

      Remove the map light sub-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 8 (IND1) and a negative (-) lead to terminal 10 (GND3) of the map light sub-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 SUB-ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TELEPHONE TRANSCEIVER ASSEMBLY - MAP LIGHT SUB-ASSEMBLY [MANUAL (SOS) SWITCH])


    1. Disconnect the P48 telephone transceiver assembly connector.

    2. Disconnect the Z3 map light sub-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
      P48-11 (IND1) - Z3-8 (IND1) Always Below 1 Ω
      P48-26 (SIG-) - Z3-10 (GND3) Always Below 1 Ω
      P48-11 (IND1) or Z3-8 (IND1) - Body ground Always 10 kΩ or higher
      P48-26 (SIG-) or Z3-10 (GND3) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TELEPHONE TRANSCEIVER ASSEMBLY


    1. Replace the telephone transceiver assembly with a new one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here