Lexus ES: Terminals Of Ecm

A25-1 (BATT) - C32-53 (E1)

R - W-B

Battery (for measuring battery voltage and for ECM memory)

Always

11 to 14 V

A25-2 (+B) - C32-53 (E1)

L - W-B

Power source of ECM

Engine switch on (IG)

11 to 14 V

A25-3 (+B2) - C32-53 (E1)

L - W-B

Power source of ECM

Engine switch on (IG)

11 to 14 V

A25-8 (+BM) - C32-53 (E1)

G - W-B

Power source of ECM

Always

11 to 14 V

A25-13 (CANH) - C32-53 (E1)

B - W-B

CAN communication line

Engine switch on (IG)

Pulse generation

A25-17 (S) - C32-53 (E1)

GR - W-B

S shift position switch signal

Engine switch on (IG) and shift lever in S

11 to 14 V

Engine switch on (IG) and shift lever not in S

Below 1 V

A25-26 (CANL) - C32-53 (E1)

W - W-B

CAN communication line

Engine switch on (IG)

Pulse generation

A25-27 (STP) - C32-53 (E1)

SB - W-B

Stop light switch signal

Brake pedal depressed

7.5 to 14 V

Brake pedal released

Below 1 V

A25-37 (SFTD) - C32-53 (E1)

W - W-B

Down-shift switch signal

Engine switch on (IG)

11 to 14 V

Engine switch on (IG) and shift lever held in "-" (Down shift)

Below 1 V

Engine switch on (IG) and "-" (Down shift) shift paddle switch operated

Below 1 V

A25-38 (SFTU) - C32-53 (E1)

G - W-B

Up-shift switch signal

Engine switch on (IG)

11 to 14 V

Engine switch on (IG) and shift lever held in "+" (Up shift)

Below 1 V

Engine switch on (IG) and "+" (Up shift) shift paddle switch operated

Below 1 V

A25-39 (SPD) - C32-53 (E1)

L - W-B

Vehicle speed signal from combination meter assembly

Driving at 20 km/h (12 mph)

Pulse generation

A25-40 (SPCN) - C32-53 (E1)

P - W-B

Combination switch (Normal/Custom) signal

Engine switch on (IG) and Normal/Custom mode switch pushed and held

Below 1.5 V

Engine switch on (IG) and Normal/Custom mode switch not pushed

11 to 14 V

A25-43 (STA) - C32-53 (E1)

G - W-B

Starter signal

Cranking (shift lever in P or N, engine switch on (START))

11 to 14 V

Engine switch on (IG) and shift lever in P or N

Below 2 V

A25-55 (PWMS) - C32-53 (E1)

LG - W-B

Combination switch (S/S+) signal

Engine switch on (IG) and combination switch assembly knob turned and held at S/S+ position

Below 1.5 V

Engine switch on (IG) and combination switch assembly knob not turned to S/S+ position

11 to 14 V

C32-6 (SL3+) - C32-7 (SL3-)

L - R

Solenoid (SL3) valve signal

3rd, 7th or Reverse gear

Pulse generation

C32-10 (SL5+) - C32-11 (SL5-)

W - R

Solenoid (SL5) valve signal

2nd or 8th gear

Pulse generation

C32-12 (SL1+) - C32-13 (SL1-)

G - BR

Solenoid (SL1) valve signal

1st, 2nd, 3rd, 4th or 5th gear

Pulse generation

C32-14 (SL4+) - C32-15 (SL4-)

LG - R

Solenoid (SL4) valve signal

4th or 6th gear

Pulse generation

C32-31 (SL2+) - C32-1 (SL2-)

LG - P

Solenoid (SL2) valve signal

5th, 6th, 7th or 8th gear

Pulse generation

C32-32 (SL6+) - C32-33 (SL6-)

GR - LG

Solenoid (SL6) valve signal

1st or Reverse gear

Pulse generation

C32-53 (E1) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

C32-62 (SL) - C32-53 (E1)

W - W-B

Solenoid (SL) valve signal

11 to 14 V

C32-67 (SLT+) - C32-37 (SLT-)

G - B

Solenoid (SLT) valve signal

Engine idling

Pulse generation

C32-72 (NCO) - C32-53 (E1)

L - W-B

Transmission Revolution Sensor (NC) signal

Vehicle being driven

Pulse generation

C32-73 (NCB) - C32-53 (E1)

G - W-B

Power source for sensor

(specific voltage)

Engine switch on (IG)

11 to 14 V

C32-74 (NTO) - C32-53 (E1)

B - W-B

Transmission Revolution Sensor (NT) signal

Engine idling (shift lever in P or N)

Pulse generation

C32-75 (NTB) - C32-53 (E1)

R - W-B

Power source for sensor

(specific voltage)

Engine switch on (IG)

11 to 14 V

C32-76 (SLU+) - C32-61 (SLU-)

L - B

Solenoid (SLU) valve signal

Lock-up ON

Pulse generation

C32-86 (THO1) - C32-133 (ETHW)

W - BR

ATF temperature sensor signal

ATF temperature 115°C (239°F) or higher

Below 1.5 V

C32-106 (NSW) - C32-53 (E1)

R - W-B

Park/neutral position switch signal

Engine switch on (IG) and shift lever in P or N

Below 1 V

Engine switch on (IG) and shift lever not in P or N

11 to 14 V

C32-107 (R) - C32-53 (E1)

W - W-B

R shift position switch signal

Engine switch on (IG) and shift lever in R

11 to 14 V

Engine switch on (IG) and shift lever not in R

Below 1 V

C32-108 (P) - C32-53 (E1)

B - W-B

P shift position switch signal

Engine switch on (IG) and shift lever in P

11 to 14 V

Engine switch on (IG) and shift lever not in P

Below 1 V

C32-139 (D) - C32-53 (E1)

R - W-B

D shift position switch signal

Engine switch on (IG) and shift lever in D or S

11 to 14 V

Engine switch on (IG) and shift lever not in D or S

Below 1 V

C32-140 (N) - C32-53 (E1)

LG - W-B

N shift position switch signal

Engine switch on (IG) and shift lever in N

11 to 14 V

Engine switch on (IG) and shift lever not in N

Below 1 V