HEADUP DISPLAY SYSTEM TERMINALS OF ECM


  1. COMBINATION MIRROR METER ASSEMBLY


    1. Check input/output signals


      1. With the connector connected, touch the tester probe to the wire harness connector from the back side, and measure the voltage and resistance of each terminal.

        A01WROWE03
        Terminal No. (Symbol) Wiring Color Input/Output Measurement Condition Standard
        E147-1 (IG) - Body ground B - Body ground Input Engine switch off → Engine switch on (IG) Below 1 V → 11 to 14 V
        E147-2 (B) - Body ground G - Body ground Input Always 11 to 14 V
        E147-4 (ES) - Body ground W-B - Body ground - Always Below 1 Ω
        E147-9 (SW1) - Body ground SB - Body ground Input Engine switch on (IG), headup main display switch turned from off to on (pressed) 11 to 14 V → Below 1 V
        E147-12 (MPX1) B Input/Output - -
        E147-13 (MPX2) W Input/Output - -
        E147-14 (TX+) - Body ground B - Body ground Input/Output - -
        E147-15 (TX-) - Body ground G - Body ground Input/Output - -
        E147-16 (E) - Body ground LG - Body ground - Always Below 1 Ω

        Tech Tips

        *: Refer to CAN Communication System, Fail-safe Chart.