Toyota Tundra. Manual — part 596

Fig. 31: Front Clearance Sonar Sensor RH - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH

a. Replace the ultrasonic sensor with a normally functioning sensor (see REMOVAL ).

2. CHECK HARNESS AND CONNECTOR (FRONT CORNER SENSOR RH - ECU)

a. Disconnect the B1 sensor connector.

b. Disconnect the J35 ECU connector.

c. Measure the resistance according to the value(s) in the table below.

Standard resistance

HARNESS AND CONNECTOR (FRONT CORNER SENSOR RH - ECU) RESISTANCE
SPECIFICATION

Tester Connection

Condition Specified Condition

B1-1 (BI) - J35-9 (BOF) Always

Below 1 ohms

B1-3 (SI) - J35-7 (SOF)

Always

Below 1 ohms

B1-5 (EI) - J35-23 (E1)

Always

Below 1 ohms

B1-1 (BI) - Body ground Always

10 kohms or higher

B1-3 (SI) - Body ground Always

10 kohms or higher

B1-5 (EI) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 32: Identifying B1 Sensor And J35 ECU Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

REAR CLEARANCE SONAR SENSOR LH CIRCUIT

DESCRIPTION

The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates
the approximate distance value between the vehicle and the obstacle, and sends the distance value as a signal to
the clearance warning ECU.

WIRING DIAGRAM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 33: Rear Clearance Sonar Sensor LH - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR LH

a. Replace the ultrasonic sensor with a normally functioning sensor (see REMOVAL ).

2. CHECK HARNESS AND CONNECTOR (REAR CORNER SENSOR LH - BACK SENSOR LH)

a. Disconnect the S1 and S4 sensor connectors.

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

HARNESS AND CONNECTOR (REAR CORNER SENSOR LH - BACK SENSOR LH)
RESISTANCE SPECIFICATION

Tester Connection

Condition Specified Condition

S1-1 (BI) - S4-2 (BO)

Always

Below 1 ohms

S1-3 (SI) - S4-4 (SO)

Always

Below 1 ohms

S1-5 (EI) - S4-6 (EO)

Always

Below 1 ohms

S1-1 (BI) - Body ground Always

10 kohms or higher

S1-3 (SI) - Body ground Always

10 kohms or higher

S1-5 (EI) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 34: Identifying S1 And S4 Sensor Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

REAR CLEARANCE SONAR SENSOR RH CIRCUIT

DESCRIPTION

The ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates
the approximate distance value between the vehicle and the obstacle, and sends the distance value as a signal to
the clearance warning ECU.

WIRING DIAGRAM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra