Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Terminals Of Ecu

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Meter / Gauge / Display / Headup Display System(for Gasoline Model) / Terminals Of Ecu

TERMINALS OF ECU

METER MIRROR SUB-ASSEMBLY

(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Signal Input/Output

Condition

Specified Condition

H1-1 (IG) - Body ground

L - Body ground

Engine switch signal

-

Engine switch off → Engine switch on (IG)

Below 1 V → 11 to 14 V

H1-2 (B) - Body ground

P - Body ground

Battery

-

Always

11 to 14 V

H1-4 (ES) - Body ground

W-B - Body ground

Ground

-

Always

Below 1 Ω

H1-12 (MPX1)

P

CAN communication line

Input/Output

-

-

H1-13 (MPX2)

R

CAN communication line

Input/Output

-

-

H1-14 (TX+)

L

Local bus communication line

Input/Output

-

-

H1-15 (TX-)

GR

Local bus communication line

Input/Output

-

-
    System Diagram

    Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014287,U015587,U016387,U016487,U023A87,U110487,U111087)

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