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:
Open in Bus 3 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Detection Item
Trouble Area
Resistance between term ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE REAR AXLE SHAFT SNAP RING
(a) Using a snap ring expander, remove the snap ring.
2. REMOVE REAR AXLE SHAFT
(a) Using SST and press, remove the rear axle shaft.
SST: 09521-25011
SST: 09521-25021
3. REMOVE REAR AXLE BEARING RETAINER INNER
(a) Remove the rear ...
Disassembly
DISASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
When removing the No. 2 front wheel opening extension pad or No. 1 front
wheel opening extension pad or front wheel opening extension pad, ...
