Toyota 4Runner: Terminals Of Ecu

F95-1 (IG) - F95-22 (E)

L - W-B

Back sonar or clearance sonar switch assembly power source signal

Ignition switch ON, back sonar or clearance sonar switch assembly on

11 to 14 V

Ignition switch ON, back sonar or clearance sonar switch assembly off

Below 1 V

F95-22 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

F95-5 (SPD) - F95-22 (E)

SB - W-B

Vehicle speed signal

Ignition switch ON, back sonar or clearance sonar switch on

Alternating between 1.5 to 4.5 V

F95-7 (PL) - F95-22 (E)

L - W-B

Shift position signal

Ignition switch ON, shift lever in P

11 to 14 V

Ignition switch ON, shift lever not in P

Below 1 V

F95-9 (L4) - F95-22 (E)

B - W-B

Front ultrasonic sensor indicator signal (Front right sensor)

Clearance warning indicator for front right sensor illuminates

Below 3 V

F95-12 (E6) - F95-22 (E)

W - W-B

Front ultrasonic sensor ground (Front left sensor)

Always

Below 1 Ω

F95-13 (S6) - F95-22 (E)

B - W-B

Front ultrasonic sensor indicator signal (Front left sensor)

Ignition switch ON, back sonar or clearance sonar switch on, sensor detects obstacle

Pulse generation (See waveform 1)

F95-15 (E4) - F95-22 (E)

LG - W-B

Rear ultrasonic sensor ground (Rear center left sensor)

Always

Below 1 Ω

F95-16 (S4) - F95-22 (E)

L - W-B

Rear ultrasonic sensor indicator signal (Rear center left sensor)

Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R

Pulse generation

(See waveform 1)

F95-17 (E1) - F95-22 (E)

R - W-B

Rear ultrasonic sensor ground (Rear right sensor)

Always

Below 1 Ω

F95-18 (S1) - F95-22 (E)

W - W-B

Rear ultrasonic sensor indicator signal (Rear right sensor)

Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R

Pulse generation

(See waveform 1)

F95-19 (CBZ) - F95-22 (E)

L - W-B

No. 1 clearance warning buzzer signal

Buzzer not sounding

Below 1 V

Sonar detecting obstacle (Buzzer sounding)

11 to 14 V

F95-20 (FF) - F95-22 (E)

P - W-B

Clearance warning buzzer signal

Buzzer sounding

Pulse generation

(See waveform 1)

F95-23 (RL) - F95-22 (E)

R - W-B

Shift position signal

Ignition switch ON, shift lever in R

11 to 14 V

Ignition switch ON, shift lever not in R

Below 1 V

F95-24 (TL) - F95-22 (E)

G - W-B

Illumination signal

Ignition switch ON, light control switch on

11 to 14 V

Ignition switch ON, light control switch off

Below 1 V

F95-26 (L5) - F95-22 (E)

P - W-B

Ultrasonic sensor (front left sensor) indicator signal

Clearance warning indicator for front left sensor illuminates

Below 3 V

F95-28 (L1) - F95-22 (E)

Y - W-B

Ultrasonic sensor (rear right sensor) indicator signal

Clearance warning indicator for rear right sensor illuminates

Below 3 V

F95-29 (L2) - F95-22 (E)

GR - W-B

Ultrasonic sensor (rear left sensor) indicator signal

Clearance warning indicator for rear left sensor illuminates

Below 3 V

F95-30 (L3) - F95-22 (E)

SB - W-B

Ultrasonic sensor (rear center right and left sensor) indicator signal

Clearance warning indicator for back sensor illuminates

Below 3 V

F95-31 (L10) - F95-22 (E)

LG - W-B

Clearance warning ECU assembly signal

Clearance warning indicator's operation indicator illuminates

Below 3 V

F95-33 (E5) - F95-22 (E)

G - W-B

Front ultrasonic sensor ground (Front right sensor)

Always

Below 1 Ω

F95-34 (S5) - F95-22 (E)

L - W-B

Front ultrasonic sensor indicator signal (Front right sensor)

Ignition switch ON, back sonar or clearance sonar switch on, sensor detects obstacle

Pulse generation

(See waveform 1)

F95-37 (E2) - F95-22 (E)

R - W-B

Rear ultrasonic sensor ground (Rear left sensor)

Always

Below 1 Ω

F95-38 (S2) - F95-22 (E)

G - W-B

Rear ultrasonic sensor communication signal (Rear left sensor)

Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R

Pulse generation

(See waveform 1)

F95-39 (E3) - F95-22 (E)

Y - W-B

Rear ultrasonic sensor ground (Rear center right sensor)

Always

Below 1 Ω

F95-40 (S3) - F95-22 (E)

B - W-B

Rear ultrasonic sensor communication signal (Rear center right sensor)

Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R

Pulse generation

(See waveform 1)

Terminal No. (Symbol)

F95-12 (E6) - F95-13 (S6)

F95-15 (E4) - F95-16 (S4)

F95-17 (E1) - F95-18 (S1)

F95-33 (E5) - F95-34 (S5)

F95-37 (E2) - F95-38 (S2)

F95-39 (E3) - F95-40 (S3)

Tool Setting

2 V/DIV., 0.1 msec./DIV.

Condition

Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R

*a

Ultrasonic sensor is normal

*b

Open circuit in ultrasonic sensor