Toyota Tacoma 2015-2018 Service Manual: Terminals Of Ecu
TERMINALS OF ECU
1. REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the T22 television camera assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
T22-5 (CGND) - Body ground |
L - Body ground |
Ground |
Always |
Below 1 Ω |
|
T22-6 (CB+) - Body ground |
B - Body ground |
Power source |
Ignition switch ON, shift lever in R |
5.5 to 7.05 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the rear television camera assembly connector.
(d) Measure the waveform according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
T22-3 (CV+) - T22-2 (CV-) |
R - W |
Video signal |
Ignition switch ON, shift lever in R |
Pulse generation (See waveform 1) |
|
Ignition switch ON, shift lever in R, screen blacked out by covering camera lens |
Pulse generation (See waveform 2) |
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly*1 or navigation receiver assembly*2 with the connector connected.
If the result is not as specified, the rear television camera assembly may have a malfunction.
- *1: w/o Navigation System
- *2: w/ Navigation System
(e) Using an oscilloscope, check the waveform.
.png)
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the inner rear view assembly with the connector connected.
(1) Waveform 1 (Reference)
|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
T22-3 (CV+) - T22-2 (CV-) |
|
Tool Setting |
200 mV/DIV., 50 μsec./DIV. |
|
Condition |
Ignition switch ON, shift lever in R |
HINT:
The video waveform changes according to the image sent by the rear television camera assembly.
(2) Waveform 2 (Reference)
|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
T22-3 (CV+) - T22-2 (CV-) |
|
Tool Setting |
200 mV/DIV., 50 μsec./DIV. |
|
Condition |
Ignition switch ON, shift lever in R, screen blacked out by covering camera lens |
HINT:
The video waveform changes according to the image sent by the rear television camera assembly.
Text in Illustration|
*a |
Waveform 1 |
|
*b |
Waveform 2 |
|
*c |
Synchronized Signal |
|
*d |
Video Waveform |
2. RADIO AND DISPLAY RECEIVER ASSEMBLY (w/o Navigation System)
(See page .gif)
)
3. NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System)
(See page )
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Rear View Monitor System
DTC Code
Detection Item
See page
C1622
Open or Short Circuit in Back Camera Signal ...
Other materials:
Customize Parameters
CUSTOMIZE PARAMETERS
PROCEDURE
1. CUSTOMIZE THEFT DETERRENT SYSTEM (w/ Wireless Door Lock System)
HINT:
The following items can be customized.
NOTICE:
When the customer requests a change in a function, first make sure that
the function can be customized.
Be sure to make a note ...
Vehicle Speed Sensor Circuit (C1AA3)
DESCRIPTION
The forward recognition camera receives vehicle speed signals from the skid control
ECU. If the skid control ECU receives a vehicle speed sensor malfunction signal,
it informs the forward recognition camera via CAN communication, and DTC C1AA3 is
stored.
DTC No.
...
Interior
*1: If equipped
* 2: Access Cab and Double Cab models
*3: Vehicles with auto anti- glare inside rear view mirror
*1: If equipped
*2: Vehicles with an automatic transmission
* : If equipped
* 1: If equipped
* 2: Vehicles with sub woofer ...