Toyota Tundra (2015 year). Manual — part 178
SYMPTOM
SUSPECTED AREA
SEE
PAGE
Problem with the rear view
monitor image (color, disorder
may be temporarily distorted when the vehicle is close to an object
that transmits radio waves, such as a telecommunication tower, an
airport or a truck equipped with a transceiver)
-
Proceed to "Screen Flicker or Color Distortion"
Proceed to "Image from Camera for Rear View Monitor is Abnormal"
Replace radio and display receiver assembly (for Column Shift Type)
Replace radio and display receiver assembly (for Floor Shift Type)
When the rear view monitor
screen is displayed, the lines are
misaligned (the image from the
camera is tilted)
Check that the camera is correctly installed
PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (f...
Last Modified: 9-16-2014
6.6 D
Doc ID: RM0000051N6015X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Radio and Display Type): DTC CHECK /
CLEAR; 2015 MY Tundra [08/2014 - ]
DTC CHECK / CLEAR
HINT:
Refer to Audio and Visual System
.
PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (f...
Last Modified: 9-16-2014
6.6 U
Doc ID: RM0000013ZZ0D6X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Radio and Display Type): TERMINALS
OF ECU; 2015 MY Tundra [08/2014 - ]
TERMINALS OF ECU
1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Disconnect the J137 and J139 radio and display receiver assembly connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
TERMINAL NO. (SYMBOL)
WIRING COLOR
TERMINAL
DESCRIPTION
CONDITION
SPECIFICATION
J137-3 (ACC1) - J137-7
(GND1)
GR - W-B
Power source (ACC)
Ignition switch off
Below 1 V
Ignition switch
ACC
11 to 14 V
J137-4 (+B1) - J137-7
(GND1)
V - W-B
Power source (+B)
Always
11 to 14 V
J137-7 (GND1) - Body ground
W-B - Body
ground
Ground
Always
Below 1 Ω
J139-1 (IG) - J137-7 (GND1)
P - W-B
Power source (IG)
Ignition switch off
Below 1 V
Ignition switch ON
11 to 14 V
(c) Reconnect the J137 and J139 radio and display receiver assembly connectors.
(d) Measure the voltage and waveform according to the value(s) in the table below.
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL
DESCRIPTION
CONDITION
SPECIFICATION
PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (f...
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL
DESCRIPTION
CONDITION
SPECIFICATION
J139-2 (REV) -
J137-7 (GND1)
Y - W-B
Reverse signal
Ignition switch ON, shift lever
in R
7.5 to 14 V
Ignition switch ON, shift lever
not in R
Below 1 V
J140-11 (CA+) -
J140-23 (CGND)
B - Shielded
Power source
Ignition switch ACC
5.5 to 7.05 V
J140-12 (V+) -
J140-24 (V-)
R - W
Display signal
Ignition switch ON
Pulse generation (See
waveform 1)
Ignition switch ON, screen
blacked out by covering
camera lens
Pulse generation (See
waveform 2)
J140-23 (CGND) -
Body ground
Shielded -
Body ground
Shielded ground
Always
Below 1 V
(e) Using an oscilloscope, check the waveform.
(1) Waveform 1
Measurement Condition
ITEM
CONTENT
Terminal No. (Symbol)
J140-12 (V+) - J140-24 (V-)
Tool Setting
0.2 V/DIV., 50 µs/DIV.
Condition
Ignition switch ON
HINT:
The video waveform changes according to the image sent by the
television camera assembly.
(2) Waveform 2
Measurement Condition
ITEM
CONTENT
Terminal No.
(Symbol)
J140-12 (V+) - J140-24 (V-)
Tool Setting
0.2 V/DIV., 50 µs/DIV.
Condition
Ignition switch ON, screen blacked out by
covering camera lens
HINT:
The video waveform changes according to the image sent by the
television camera assembly.
Text in Illustration
PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (f...
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