Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 348

PM–16

PARK ASSIST / MONITORING  –  CLEARANCE SONAR SYSTEM

PM

DESCRIPTION

An ultrasonic sensor consists of a sensor portion that transmits and receives ultrasonic waves and a pre-
amplifier that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and sends the received 
signals to the clearance warning ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

(a) Remove the No. 1 ultrasonic sensor.
(b) Measure the resistance.

Standard resistance

(c) Reinstall the sensor.

NG

OK

Back Sonar Sensor LH Circuit

1

INSPECT NO.1 ULTRASONIC SENSOR

Clearance Warning ECU

No. 1 Ultrasonic Sensor (LH)

S

E

S6

E1

B132694E01

2

1

I102666E01

Tester connection

Specified condition

1 - 2

8 to 12 k

Ω

REPLACE NO. 1 ULTRASONIC SENSOR

PARK ASSIST / MONITORING  –  CLEARANCE SONAR SYSTEM

PM–17

PM

(a) Disconnect the E31 clearance warning ECU connector.
(b) Disconnect the N1 connector from the No. 1 ultrasonic 

sensor.

(c) Measure the resistance .

Standard resistance

(d) Reconnect the ECU connector.
(e) Reconnect the sensor connector.

NG

OK

2

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 
ULTRASONIC SENSOR)

1 2

Wire Harness Side:

Clearance Warning ECU

No. 1 Ultrasonic Sensor (LH)

E31

N1

S

E

S6

E1

B132712E03

Tester connection

Specified condition

S6 (E31-12) - S (N1-2)

Below 1 

Ω

E1 (E31-11) - E (N1-1)

Below 1 

Ω

S6 (E31-12) - Body ground

10 k

Ω or higher

E1 (E31-11) - Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

PM–18

PARK ASSIST / MONITORING  –  CLEARANCE SONAR SYSTEM

PM

DESCRIPTION

An ultrasonic sensor consists of a sensor portion that transmits and receives ultrasonic waves and a pre-
amplifier that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and sends the received 
signals to the clearance warning ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

(a) Remove the No. 1 ultrasonic sensor.
(b) Measure the resistance.

Standard resistance

(c) Reinstall the sensor.

NG

OK

Back Sonar Sensor RH Circuit

1

INSPECT NO. 1 ULTRASONIC SENSOR

Clearance Warning ECU

No. 1 Ultrasonic Sensor (RH)

S

E

S5

E2

B132694E02

2

1

I102666E01

Tester connection

Specified condition

1 - 2

8 to 12 k

Ω

REPLACE NO. 1 ULTRASONIC SENSOR

PARK ASSIST / MONITORING  –  CLEARANCE SONAR SYSTEM

PM–19

PM

(a) Disconnect the E31 clearance warning ECU connector.
(b) Disconnect the M1 No. 1 ultrasonic sensor connector.
(c) Measure the resistance.

Standard resistance

(d) Reconnect the ECU connector.
(e) Reconnect the sensor connector.

NG

OK

2

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - NO. 1 
ULTRASONIC SENSOR)

1 2

Wire Harness Side:

Clearance Warning ECU

No. 1 Ultrasonic Sensor (RH)

E31

M1

S

E

S5

E2

B132712E04

Tester connection

Specified condition

S5 (E31-6) - S (M1-2)

Below 1 

Ω

E2 (E31-5) - E (M1-1)

Below 1 

Ω

S5 (E31-6) - Body ground

10 k

Ω or higher

E2 (E31-5) - Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE