Toyota Tundra. Manual — part 601

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking
the suspected areas in the order they are listed. Replace parts as necessary.

Rear view monitor system

REAR VIEW MONITOR SYSTEM - PROBLEM SYMPTOMS CHART

TERMINALS OF ECU

Symptom

Suspected Area

See

When shift lever is in R position,
rear view monitor image is not
displayed (Screen is not black).

Reverse signal circuit

REVERSE SIGNAL CIRCUIT

Display Signal Circuit between
Navigation Receiver Assembly
and Television Camera Assembly

DISPLAY SIGNAL CIRCUIT

BETWEEN NAVIGATION

RECEIVER ASSEMBLY AND

TELEVISION CAMERA

ASSEMBLY

Navigation receiver assembly

TERMINALS OF ECU

When shift lever is in R position,
rear view monitor image is not
displayed (Screen is black).

Navigation receiver assembly
power source circuit

NAVIGATION RECEIVER

ASSEMBLY POWER SOURCE

CIRCUIT

Display Signal Circuit between
Navigation Receiver Assembly
and Television Camera Assembly

DISPLAY SIGNAL CIRCUIT

BETWEEN NAVIGATION

RECEIVER ASSEMBLY AND

TELEVISION CAMERA

ASSEMBLY

Television camera assembly

TERMINALS OF ECU

Navigation receiver assembly

TERMINALS OF ECU

When shift lever is not in R
position, rear view monitor image
is displayed.

Reverse signal circuit

REVERSE SIGNAL CIRCUIT

Display Signal Circuit between
Navigation Receiver Assembly
and Television Camera Assembly

DISPLAY SIGNAL CIRCUIT

BETWEEN NAVIGATION

RECEIVER ASSEMBLY AND

TELEVISION CAMERA

ASSEMBLY

Navigation receiver assembly

TERMINALS OF ECU

Problem with the rear view
monitor image (color, disorder of
picture).

Display Signal Circuit between
Navigation Receiver Assembly
and Television Camera Assembly

DISPLAY SIGNAL CIRCUIT

BETWEEN NAVIGATION

RECEIVER ASSEMBLY AND

TELEVISION CAMERA

ASSEMBLY

Navigation receiver assembly

TERMINALS OF ECU

Television camera assembly

TERMINALS OF ECU

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

1. CHECK TELEVISION CAMERA ASSEMBLY

Fig. 50: Identifying X1 Camera Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the X1 camera connector.

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

X1 CAMERA CONNECTOR VOLTAGE AND RESISTANCE SPECIFICATION

If the result is not as specified, there may be a malfunction on the wire harness side.

c. Reconnect the X1 camera connector.

d. Measure the waveform according to the value(s) in the table below.

X1 CAMERA CONNECTOR WAVEFORM REFERENCE

If the result is not as specified, the camera may have a malfunction.

e. Using an oscilloscope, check the waveform.

Waveform (Reference)

OSCILLOSCOPE WAVEFORM REFERENCE

Terminal No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified

Condition

X1-4 (CGND)-Body

ground

W - Body

ground

Ground

Always

Below 1 ohms

X1-3 (CB+) - X1-4

(CGND)

R-W

Power source

Ignition switch ON, shift
lever R position

5.5 to 7.05 V

Terminal No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified

Condition

X1-1 (CV+) - X1-2

(CV-)

B -

Shielded

Display signal

Ignition switch ON, shift
lever R position

Waveform

Item

Content

Terminal No. (Symbols)

X1-1 (CV+) - X1-2 (CV-)

Tool Setting

0.2 V/DIV., 0.2 µsec./DIV.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 51: Oscilloscope Waveform
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. CHECK NAVIGATION RECEIVER ASSEMBLY (See TERMINALS OF ECU )

DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION RECEIVER ASSEMBLY AND
TELEVISION CAMERA ASSEMBLY

DESCRIPTION

This is the display signal circuit between the navigation receiver assembly and the television camera.

WIRING DIAGRAM

Fig. 52: Navigation Receiver Assembly And Television Camera Assembly - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY

TELEVISION CAMERA)

Condition

Ignition switch ON, shift lever R position

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Fig. 53: Checking Harness And Connector (Navigation Receiver Assembly Television Camera)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the K7 navigation receiver assembly connector.

b. Disconnect the X1 camera connector.

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

Standard resistance

HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY TELEVISION
CAMERA) RESISTANCE SPECIFICATION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

2. CHECK NAVIGATION RECEIVER ASSEMBLY

Tester Connection

Condition Specified Condition

K7-22 (V+) - X1-1 (CV+)

Always

Below 1 ohms

K7-23 (V-) - X1-2 (CV-)

Always

Below 1 ohms

K7-21 (CGND) - X1-4 (CGND) Always

Below 1 ohms

K7-24 (CA+) - X1-3 (CB+)

Always

Below 1 ohms

K7-22 (V+) - Body ground

Always

10 kohms or higher

K7-23 (V-) - Body ground

Always

10 kohms or higher

K7-21 (CGND) - Body ground

Always

10 kohms or higher

K7-24 (CA+) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra