Terminals Of Ecu

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Fig 1: Identifying Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TERMINAL CONDITION

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

4 <--> 14 (MPX-IG <--> P-GND)

Ignition switch ON

10 - 14 V

5 <--> 14 (MPX-B <--> P-GND)

Constant

10 - 14 V

6 <--> 14 (HIC <--> P-GND)

Constant

10 - 14 V

8 <--> 14 (IG <--> P-GND)

Ignition switch ON

Below 1 V

9 <--> 14 (RSS <--> P-GND)

Constant

10 - 14 V

10 <--> 14 (TAIL1 <--> P-GND)

Constant

10 - 14 V

11 <--> 14 (ST0P1 <--> P-GND)

Constant

10 - 14 V

12 <--> 14 (BK-UP <--> P-GND)

Constant

10 - 14 V

13 <--> 14 (ST0P2 <--> P-GND)

Constant

10 - 14 V

14 <--> Body ground (P-GND <--> Body ground)

Constant

Below 1 V

15 <--> 14 (TAIL2 <--> P-GND)

Constant

10 - 14 V

16 <--> 14 (L-O/C (P) <--> P-GND)

Constant

10 - 14 V

18 <--> 14 (FUEL OPN (O) <--> P-GND)

Constant

10 - 14 V

L14-12 <--> L14-5 (TIL1 <--> SG)

V <--> W-B

Light control switch TAIL

10 - 14 V

L14-2(MPX+)

V - G

Multiplex communication circuit

L14-3(MPX)

⁽¹⁾ P - L

Multiplex communication circuit

L14-4- <--> L14-5 (FSMV <--> SG)

B-0 <--> W-B

Ignition switch ON

4.5 - 5.5 V

L14-5 <--> Body ground (SG <--> Body ground)

W-B <--> Body ground

Constant

Below 1 V

L14-6 <--> L14-5 (FSME <--> SG)

BR-Y <--> W-B

Constant

Below 1 V

L14-7 <--> L14-5 (FSSE <--> SG)

Y-G <--> W-B

Constant

Below 1 V

L14-8 <--> L14-5 (BDCY <--> SG)

L <--> W-B

Striker switch ON

Below 1 V

L14-9 <--> L14-5 (RBIL <--> SG)

LG (⁽²⁾) <--> W-B

Light control switch TAIL

10 - 14 V

L14-10 (BUBS)

Multiplex communication circuit

L14-11 <--> L14-5 (RMGV <--> SG)

G-Y (⁽³⁾) <--> W-B

See A/C system

L14-1 <--> L14-5 (TIL1 <--> SG)

V <--> W-B

Light control switch TAIL

10 - 14 V

L14-13(MPX-)

V-G

Multiplex communication circuit

L14-15 <--> L14-5 (FSSV <--> SG)

Y-R <--> W-B

Ignition switch ON

4.5-5.5 V

L14-16 <--> L14-5 (SMOK <--> SG)

P-G <--> W-B

See A/C system

L14-17 <--> L14-5 (AUTO <--> SG)

W-L f <--> W-B

See A/C system

L14-18 <--> L14~5 (RHR <--> SG)

G-O <--> W-B

See A/C system

L14-19 <--> L14-5 (RFR <--> SG)

G-B <--> W-B

See A/C system

L14-20 <--> L14-5 (FRS <--> SG)

GR-L <--> W-B

See A/C system

L14-22 <--> L14-5 (LGCY <--> SG)

O <--> W-B

Luggage door is opened. (Luggage compartment door courtesy switch ON)

Below 1 V

L13-2 <--> L14-5 (TIL2 <--> SG)

V <--> W-B

Light control switch TAIL

10 - 14 V

L13-2 <--> L14-5 (TIL2 <--> SG)

V <--> W-B

Light control switch TAIL

10 - 14 V

L13-6 <--> L14-5 (STP3 <--> SG)

R-B <--> W-B

Brake pedal is depressed. (Stop light switch ON)

10 - 14 V

L13-7 <--> L14-5 (STP1 <--> SG)

R-W <--> W-B

Brake pedal is depressed. (Stop light switch ON)

10 - 14 V

L13-7 <--> L14-5 (STP1 <--> SG)

R-W <--> W-B

Brake pedal is depressed. (Stop light switch ON)

10 - 14 V

L13-9 <--> L14-5 (FSSS <--> SG)

Y-B <--> W-B

Ignition switch ON and fuel sender sub gauge float UP

Approx. 0.5 V

Ignition switch ON and fuel sender sub gauge float DOWN

Approx. 5.5 V

L13-10 <--> L14-5 (FSMS <--> SG)

B-R <--> W-B

Ignition switch ON and fuel sender main gauge float UP

Approx. 0.5 V

Ignition switch ON and fuel sender main gauge float DOWN

Approx. 5.5 V

L12-1 <--> L14-5 (LCM- <--> SG)

B <--> W-B

Luggage compartment door closer system operating

10 - 14 V

L12-3 <--> L14-5 (TKUL <--> SG)

G-R <--> W-B

Luggage compartment door key lock and unlock switch ON

Below 1 V

Luggage compartment door key lock and unlock switch OFF

10 - 14 V

L12-4 <--> L14-5 (LCTY <--> SG)

L <--> W-B

Luggage door is opened. (Luggage compartment door courtesy switch ON)

Below 1 V

L12-6 <--> L14-5 (LCLS <--> SG)

W <--> W-B

Luggage compartment door closer switch CLOSE

Below 1 V

Luggage compartment door closer switch OPEN

10 - 14 V

L12-7 <--> L14-5 (LOPN <--> SG)

L-Y <--> W-B

Luggage compartment door closer switch CLOSE

Below 1 V

Luggage compartment door closer switch OPEN

10 - 14 V

L12-8 <--> L14-5 (LCM+ <--> SG)

L-R <--> W-B

Luggage compartment door closer system operating

10 - 14 V

L12-9 <--> L14-5 (TIL4 <--> SG)

G-W <--> W-B

Light control switch TAIL

10 - 14 V

L12-10 <--> L14-5 (LCE1 <--> SG)

W <--> W-B

Light control switch TAIL

10 - 14 V

L12-11 <--> L14-5 (TIL3 <--> SG)

B <--> W-B

Light control switch TAIL

10 - 14 V

L12-12 <--> L14-5 (STP2 <--> SG)

R <--> W-B

Brake pedal is depressed. (Stop light switch ON)

Below 1 V

L12-13 <--> L14-5 (BCK1 <--> SG)

G-Y <--> W-B

Park/Neutral position switch position R (A/T shift lever R position)

10 - 14 V

L12-14 <--> L14-5 (LGLP <--> SG)

R-W <--> W <--> B

Luggage door is opened. (Luggage compartment door courtesy switch ON)

Below 1 V

⁽¹⁾	w/ LEXUS Park Assist (Clearance Sensor)

⁽²⁾	w/ Rear Power Seat

⁽³⁾	w/ Rear Cooler