TERMINALS OF ECU
HINT:
Check from the rear of the connector while it is connected to the components.
1. RADIO AND DISPLAY RECEIVER ASSEMBLY
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
E4-1 (FR+) - E4-7 (GND1) |
LG - BR |
Sound signal (Front right) |
Audio system playing |
A waveform synchronized with sound signals is output |
E4-2 (FL+) - E4-7 (GND1) |
P - BR |
Sound signal (Front left) |
Audio system playing |
A waveform synchronized with sound signals is output |
E4-3 (ACC1) - E4-7 (GND1) |
GR - BR |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14 V |
|||
E4-4 (+B1) - E4-7 (GND1) |
SB - BR |
Power source (+B) |
Always |
11 to 14 V |
E4-5 (FR-) - E4-7 (GND1) |
L - BR |
Sound signal (Front right) |
Audio system playing |
A waveform synchronized with sound signals is output |
E4-6 (FL-) - E4-7 (GND1) |
V - BR |
Sound signal (Front left) |
Audio system playing |
A waveform synchronized with sound signals is output |
E4-7 (GND1) - Body ground |
BR - Body ground |
Ground |
Always |
Below 1 V |
E4-10 (ILL+) - E4-7 (GND1) |
G - BR |
Illumination signal |
Light control switch off |
Below 1 V |
Light control switch in tail or head position |
11 to 14 V |
|||
E5-1 (RR+) - E4-7 (GND1) |
R - BR |
Sound signal (Rear right) |
Audio system playing |
A waveform synchronized with sound signals is output |
E5-2 (RL+) - E4-7 (GND1) |
B - BR |
Sound signal (Rear left) |
Audio system playing |
A waveform synchronized with sound signals is output |
E5-3 (RR-) - E4-7 (GND1) |
W - BR |
Sound signal (Rear right) |
Audio system playing |
A waveform synchronized with sound signals is output |
E5-5 (ILL-) - E4-7 (GND1) |
W - BR |
Illumination signal |
Light control switch off |
Below 1 V |
Light control switch in tail or head position |
Pulse generation |
|||
E5-6 (RL-) - E4-7 (GND1) |
Y - BR |
Sound signal (Rear left) |
Audio system playing |
A waveform synchronized with sound signals is output |
E42-1 (IG) - E4-7 (GND1) |
V - BR |
Power source (IG) |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
E42-4 (MACC) - E4-7 (GND1) |
R - BR |
Microphone power supply |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
4 to 6 V |
|||
E42-5 (MIN+) - E4-7 (GND1) |
B - BR |
Microphone voice signal |
See "Check Microphone" in Operation Check (See page
|
- |
E42-6 (SNS2) - E4-7 (GND1) |
Y - BR |
Microphone connection detection signal |
Always |
Below 1 V |
E42-9 (CANH) |
SB |
CAN communication signal |
- |
- |
E42-10 (CANL) |
W |
CAN communication signal |
- |
- |
E42-11 (AGND) - Body ground |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
E42-15 (PKB) - E4-7 (GND1) |
R - BR |
Parking brake signal |
See "Check Vehicle Signal" in Operation Check (See page
|
- |
E42-17 (SPD) - E4-7 (GND1) |
BR - BR |
Vehicle speed signal |
See "Check Vehicle Signal" in Operation Check (See page
|
- |
E42-18 (SGND) - Body ground |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
E42-19 (MIN-) - E4-7 (GND1) |
W - BR |
Microphone voice signal |
See "Check Microphone" in Operation Check (See page
|
- |
E42-21 (SW1) - E42-23 (SWG) |
GR - R |
Steering pad switch signal |
No switch pushed |
2.97 to 3.56 V |
Up switch pushed |
0.27 to 0.35 V |
|||
Down switch pushed |
0.86 to 1.03 V |
|||
Volume+ switch pushed |
1.51 to 1.79 V |
|||
Volume- switch pushed |
2.22 to 2.66 V |
|||
E42-22 (SW2) - E42-23 (SWG) |
LG - R |
Steering pad switch signal |
No switch pushed |
2.97 to 3.56 V |
MODE/HOLD switch pushed |
0.27 to 0.35 V |
|||
On hook switch pushed |
0.86 to 1.03 V |
|||
Off hook switch pushed |
1.51 to 1.79 V |
|||
Voice switch pushed |
2.22 to 2.66 V |
|||
E42-23 (SWG) - E4-7 (GND1) |
R - BR |
Steering pad switch ground |
Always |
Below 1 V |
E42-24 (SW3) - E42-23 (SWG) |
L - R |
Steering pad switch signal |
No switch pushed |
2.97 to 3.56 V |
Enter switch pushed |
0.27 to 0.35 V |
|||
Back switch pushed |
0.86 to 1.03 V |
|||
Right switch pushed |
1.51 to 1.79 V |
|||
Left switch pushed |
2.22 to 2.66 V |
|||
E42-25 (ADPG) - E4-7 (GND1) |
SB - BR |
External device connection detection signal |
External device connected |
Below 1 V |
External device not connected |
2.1 to 3 V |
|||
E42-26 (VAR+) - E42-27 (VA-) |
B - W |
Sound signal (Right) |
External device playing (When stereo jack used) |
A waveform synchronized with sound signals is output |
E42-27 (VA-) - E4-7 (GND1) |
W - BR |
Ground |
Always |
Below 1 V |
E42-28 (VAL+) - E42-27 (VA-) |
B - W |
Sound signal (Left) |
External device playing (When stereo jack used) |
A waveform synchronized with sound signals is output |
E52-11 (CA+) - E4-7 (GND1)*1 |
B - BR |
Television camera power supply |
Ignition switch ACC |
5.5 to 7.05 V |
E52-12 (V+) - E4-7 (GND1)*1 |
R - BR |
Video signal |
Ignition switch ON Shift lever in R Camera lens not covered, displaying an image |
Pulse generation (Refer to waveform 1) |
Ignition switch ON Shift lever in R Camera lens covered, blacking out screen |
Pulse generation (Refer to waveform 2) |
|||
E52-23 (CGND) - Body ground*1 |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
E52-24 (V-) - E4-7 (GND1)*1 |
W - BR |
Ground |
Always |
Below 1 V |
V2-3 (ACC2) - E4-7 (GND1)*2 |
Y - BR |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14 V |
|||
V2-4 (+B2) - E4-7 (GND1)*2 |
R - BR |
Power source (+B) |
Always |
11 to 14 V |
V2-8 (GND2) - Body ground*2 |
B - Body ground |
Ground |
Always |
Below 1 V |
E48-1 (UPO) |
- |
Power source |
- |
- |
E48-2 (UDO-) |
- |
Data signal |
- |
- |
E48-3 (UDO+) |
- |
Data signal |
- |
- |
E48-4 (UESG) |
- |
Ground |
- |
- |
E48-5 (USG1) |
- |
Shield ground |
- |
- |
V6-1 (USV4)*2 |
- |
Power source |
- |
- |
V6-2 (US4-)*2 |
- |
Data signal |
- |
- |
V6-3 (US4+)*2 |
- |
Data signal |
- |
- |
V6-4 (UGD4)*2 |
- |
Ground |
- |
- |
V6-5 (USG4)*2 |
- |
Shield ground |
- |
- |
V4-1 (LV1)*2 |
- |
LVDS communication signal |
- |
- |
RA-5 (ANT+) - E4-7 (GND1) |
- - BR |
Power source of antenna |
Ignition switch ACC Radio switch on and FM or AM selected |
11 to 14 V |
(a) Reference (Oscilloscope waveform):
(1) Waveform 1 (camera lens not covered, displaying an image)
Item |
Content |
---|---|
Measurement terminal |
E52-12 (V+) - E4-7 (GND1) |
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
Condition |
Ignition switch ON, shift lever in R |
HINT:
(2) Waveform 2 (camera lens covered, blacking out the screen)
Item |
Content |
---|---|
Measurement terminal |
E52-12 (V+) - E4-7 (GND1) |
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
Condition |
Ignition switch ON, shift lever in R |
HINT:
*a |
Waveform 1 (camera lens not covered, displaying an image) |
*b |
Waveform 2 (camera lens covered, blacking out the screen) |
*c |
Synchronization Signal |
*d |
Video Waveform |
2. STEREO COMPONENT TUNER ASSEMBLY (w/ SDARS System)
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
V7-3 (ACC2) - V7-8 (GND2) |
Y - B |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14 V |
|||
V7-4 (+B2) - V7-8 (GND2) |
R - B |
Power source (+B) |
Always |
11 to 14 V |
V7-8 (GND2) - Body ground |
B - Body ground |
Ground |
Always |
Below 1 V |
V9-1 (USV4) |
- |
Power source |
- |
- |
V9-2 (US4-) |
- |
Data signal |
- |
- |
V9-3 (US4+) |
- |
Data signal |
- |
- |
V9-4 (UGD4) |
- |
Ground |
- |
- |
V9-5 (USG4) |
- |
Shield ground |
- |
- |
V8-1 (LV1) |
- |
LVDS communication signal |
- |
- |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
Intake Air Temperature Circuit Low Input (P0112,P0113)
DESCRIPTION
The intake air temperature sensor, in the mass air flow meter, monitors
the intake air temperature. The intake air temperature sensor has a built-in
thermistor with a resistance that varies according to the temperature of
the ...
Electronic Circuit Inspection Procedure
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance measurements are standard values
measured at an ambient temperature of 20°C (68°F). Resistance meas ...