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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
G03376366Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINAL CONDITION

Terminals No. (Symbols) Wiring Color Condition STD Voltage (V)
1 (AIRBAG) - Multiple communication circuit -
2 - 7 (WIP - GND) - Ignition switch ON 10 - 14 V
4 - 7 (ACC - GND) - Ignition switch ACC or ON 10 - 14 V
5 - 7 (MPX-B - GND) - Constant 10 - 14 V
6 - 7 (B/ANC - GND) - Constant 10 - 14 V
7 - Body ground (GND - Body ground) - Constant Below 1 V
10 - 7 (MPX-IG - GND) - Ignition switch ON 10 - 14 V
P4-1 - P5-11 (S/S - GND1) P - W - B Ignition switch ON and wiper switch INT Voltage change 12 V - Below 1 V
Ignition switch OFF or wiper switch OFF Below 1 V
Ignition switch ON and washer switch ON OFF 10 - 14 V (for 2.5 sec.)
P4-2 - P5-11 (+2 - GND1) L-R - W-B Wiper switch OFF Below 1 V
Wiper switch INT, AUTO Below 1 V
Wiper switch LO Below 1 V
Wiper switch HI 10 - 14 V
P4 - 4 (MPX-) GR-B Multiplex communication circuit -
P4-13 - P5-11 (HDLV - GND1) R-B - W-B Ignition switch OFF or Light control switch HEAD and DRL system is OFF 10 - 14 V
Ignition switch ON and light control switch HEAD or DRL system is ON Below 1 V
P4-14 - P5-11 (ALTL - GND1) P-G - W-B Engine running Below 1 V
Engine stopped 10 - 14 V
P4-15 - P5-11 (WNG - GND1) L-W-B Headlight beam level control system is normal condition 10 - 14 V
Headlight beam level control system is warning condition Below 1 V
P4-16 - P5-11 (PIND - GND1) R-W - W-B Brake pad wear indicator switch ON 10 - 14 V
Brake pad wear indicator switch OFF Below 1 V
P5-5 - P5-11 (CSPT - GND1) W-L - W-B Ignition switch ACC or ON Below 1 V
Ignition switch OFF 10 - 14 V
P5-7 - P5-11 (FSPT - GND1) V - W-B Each door are opened Below 1 V
All door are closed 10 - 14 V
P5-9 - P5-11 (ILE - GND1) V-W - W-B Each door are opened Below 1 V
All door are closed 10 - 14 V
P5-11 - Body ground (GND1 - Body ground) W-B Constant Below 1 V
P5-12 - P5-11 (BACK - GND1) L((1)) - W-B Shift lever R position 10 - 14 V
Shift lever except R position Below 1 V
P5-14 - P5-11 (2S - GND1) W-G - W-B Wiper switch OFF 10 - 14 V
Wiper switch INT, AUTO 10 - 14 V
Wiper switch LO 10 - 14 V
Wiper switch HI Below 1 V
P5-15 - P5-11 (LCTY - GND1) Y-G - W-B Rear right door opened Below 1 V
Rear right door is closed 10 - 14 V
P5-16 - P5-11 (RCTY - GND1) V-G - W-B Rear right door opened Below 1 V
Rear right door closed 10 - 14 V
P5-17 - P5-11 (SN0W-GND1) L-R - W-B SNOW switch (ECT pattern select switch) ON Below 1 V
SNOW switch (ECT pattern select switch) OFF 10 - 14 V
P5-18 - P5-11 (PWR - GND1) GR-L - W-B PWR switch (ECT pattern select switch) ON Below 1 V
PWR switch (ECT pattern select switch) OFF 10 - 14 V
P5-19 - P5-11 (RRSW-GND1) Y ((2)) - W-B Rear seat return switch ON Below 1 V
Rear seat return switch OFF 10 - 14 V
P6-1 - P5-11 (REV - GND1) L-W - W-B Shift lever R position Below 1 V
Shift lever except R position 10 - 14 V
P6-2 - P5-11 (PBIL - GND1) G-W-B Passenger door is open 2 - 6 V
Passenger door is closed Below 1 V
P6-3 - P5-11 (PBM+ - GND1) L-B - W-B Power shoulder belt anchor switch UP 10 - 14 V
Power shoulder belt anchor switch DOWN Below 1 V
P6-4 - P5-11 (PBM - GND1) Y-B - W-B Power shoulder belt anchor switch DOWN 10 - 14 V
Power shoulder belt anchor switch UP Below 1 V
(1) w/ LEXUS Navigation System
(2) Rear Power Seat