CHARGING SYSTEM TERMINALS OF ECM

  1. CHECK ECM

    A342925E02
    Tip:

    The standard voltage and resistance between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage and resistance for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol)

    Wiring Color

    Terminal Description

    Condition

    Specified Condition

    A62-1 (BATT) - B93-59 (E1)

    W - BR

    Battery (for measuring battery voltage and for ECM memory)

    Always

    11 to 14 V

    B93-59 (E1) - Body ground

    BR - Body ground

    Earth (ground) circuit of ECM

    Always

    Below 1 Ω

    B93-61 (LIN) - Body ground

    L - Body ground

    LIN communication line

    Ignition switch off

    (while LIN communication is stopped)

    10 kΩ or higher