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Terminals Of Ecu

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Terminals Of ECU
G03376310Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINALS OF ECU

Terminal No. (Symbols) Wiring color Condition STD voltage (V)
C14-1 - C14-8 (B-E) R-B - W-B Constant 10 - 14 V
C14-2 - C14-8 (IG-E) R-L - W-B Ignition switch OFF or ACC Below 1 V
Ignition switch ON 10 - 14 V
C14-3 (2S) W-G Wiper and washer switch communication circuit -
C14-4 (HEAD) R-W Light control switch communication circuit -
C14-8 - Body ground (E - Body ground) W-B - Body ground Constant Below 1 V
C14-9 (MPX1) V-G Multiplex communication circuit -
C14-1O (MPX2) V-G Multiplex communication circuit -