Toyota Tundra. Manual — part 595

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

Fig. 27: Back Sonar Sensor RH - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. REPLACE BACK NO. 2 ULTRASONIC SENSOR RH

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

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

a. Disconnect the S3 and S2 sensor connectors.

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

Standard resistance

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

Tester Condition

Condition Specified Condition

S3-1 (BI) - S2-2 (BO)

Always

Below 1 ohms

S3-3 (SI) - S2-4 (SO)

Always

Below 1 ohms

S3-S (EI) - S2-6 (EO)

Always

Below 1 ohms

S3-1 (BI) - Body ground Always

10 kohms or higher

S3-3 (SI) - Body ground Always

10 kohms or higher

S3-5 (EI) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 28: Identifying S3 And S2 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

FRONT 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. 29: Front Clearance Sonar Sensor LH - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR LH

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

2. CHECK HARNESS AND CONNECTOR (FRONT CORNER SENSOR LH - FRONT CORNER

SENSOR RH)

a. Disconnect the C1 and B1 sensor connectors.

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

Standard resistance

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

Tester Connection

Condition Specified Condition

C1-1 (BI) - B1-2 (BO)

Always

Below 1 ohms

C1-3 (SI) - B1-4 (SO)

Always

Below 1 ohms

C1-5 (EI) - B1-6 (EO)

Always

Below 1 ohms

C1-1 (BI) - Body ground Always

10 kohms or higher

C1-3 (SI) - Body ground Always

10 kohms or higher

C1-5 (EI) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 30: Identifying C1 And B1 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

FRONT 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