G-BOOK SYSTEM (w/ Telematics Transceiver) Emergency Call Switch Indicator Circuit

WIRING DIAGRAM

A01NIGRE01

INSPECTION PROCEDURE

Tech Tips

When replacing the telematics transceiver, perform the vehicle contract setting Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAP LIGHT ASSEMBLY)


    1. Disconnect the G25 telematics transceiver connector.

    2. Disconnect the T10 map light assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G25-11 (IND1) - T10-4 (IND1) Always Below 1 Ω
      G25-12 (IND2) - T10-6 (IND2) Always Below 1 Ω
      G25-26 (SIG-) - T10-7 (GND3) Always Below 1 Ω
      G25-11 (IND1) - Body ground Always 10 KΩ or higher
      G25-12 (IND2) - Body ground Always 10 KΩ or higher
      G25-26 (SIG-) - Body ground Always 10 KΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT MAP LIGHT ASSEMBLY


    1. Disconnect the T10 map light assembly connector.

    2. Connect 2 dry-cell batteries in series.

    3. A01NMHZE28
      Text in Illustration
      *a

      Component without harness connected

      (Map Light Assembly)

      Connect a positive (+) lead to terminal T10-4 (IND1) or T10-6 (IND2), and a negative (-) lead to terminal T10-7 (GND3) of the map light assembly connector.

    4. Check if the illumination for the telephone switch assembly comes on.

      OK
      The red indicator comes on when the positive (+) lead from the batteries is connected to terminal T10-4 (IND1) and the negative (-) lead is connected to terminal T10-7 (GND3).
      The green indicator comes on when the positive (+) lead from the batteries is connected to terminal T10-6 (IND2) and the negative (-) lead to is connected to terminal T10-7 (GND3).

    NG

    REPLACE TELEPHONE SWITCH ASSEMBLY Click here

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

  3. REPLACE TELEPHONE SWITCH ASSEMBLY


    1. Replace the telephone switch assembly with a known good one and check if the same problem occurs again Click here.

      OK
      The system returns to normal.

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

    END (TELEPHONE SWITCH ASSEMBLY WAS DEFECTIVE)