TERMINALS OF ECU
1. RADIO AND DISPLAY RECEIVER ASSEMBLY
Terminal No. (Symbols) |
Wiring Color |
Terminal Description |
Condition |
Specification |
---|---|---|---|---|
G48-1 (FR+) - G48-7 (GND) |
P - BR |
Sound signal (Front Right) |
Audio system playing |
A waveform synchronized with sounds is output |
G48-2 (FL+) - G48-7 (GND) |
LG - BR |
Sound signal (Front Left) |
Audio system playing |
A waveform synchronized with sounds is output |
G48-3 (ACC) - G48-7 (GND) |
GR - BR |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14 V |
|||
G48-4 (B) - G48-7 (GND) |
SB - BR |
Power source (+B) |
Always |
11 to 14 V |
G48-5 (FR-) - G48-7 (GND) |
Y - BR |
Sound signal (Front Right) |
Audio system playing |
A waveform synchronized with sounds is output |
G48-6 (FL-) - G48-7 (GND) |
L - BR |
Sound signal (Front Left) |
Audio system playing |
A waveform synchronized with sounds is output |
G48-7 (GND) - Body ground |
BR - Body ground |
Ground |
Always |
Below 1 V |
G48-10 (ILL+) - G48-7 (GND) |
G - BR |
Illumination signal |
Light control switch off |
Below 1 V |
Light control switch in tail or head position |
11 to 14 V |
|||
G47-1 (RR+) - G48-7 (GND) |
R - BR |
Sound signal (Rear Right) |
Audio system playing |
A waveform synchronized with sounds is output |
G47-2 (RL+) - G48-7 (GND) |
B - BR |
Sound signal (Rear Left) |
Audio system playing |
A waveform synchronized with sounds is output |
G47-3 (RR-) - G48-7 (GND) |
W - BR |
Sound signal (Rear Right) |
Audio system playing |
A waveform synchronized with sounds is output |
G47-5 (ILL-) - G48-7 (GND) |
W - BR |
Illumination signal |
Ignition switch off |
Below 1 V |
Light control switch in tail or head position |
Pulse generation |
|||
G47-6 (RL-) - G48-7 (GND) |
Y - BR |
Sound signal (Rear Left) |
Audio system playing |
A waveform synchronized with sounds is output |
G49-1 (IG) - G48-7 (GND) |
L - BR |
Power source (IG) |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
G49-2 (REV) - G48-7 (GND) |
R - BR |
Reverse signal |
See "Vehicle Signal Check Mode" in Operation Check (See page
|
- |
G49-4 (MACC) - G48-7 (GND) |
R - BR |
Microphone power supply |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
4 to 6 V |
|||
G49-5 (MIN+) - G48-7 (GND) |
B - BR |
Microphone voice signal |
See "Check Microphone" in Operation Check (See page
|
- |
G49-6 (SNS2) - G48-7 (GND) |
G - BR |
Microphone connection detection signal |
Always |
Below 1 V |
G49-9 (CANH) |
P |
CAN communication signal |
- |
- |
G49-10 (CANL) |
W |
CAN communication signal |
- |
- |
G49-11 (AGND) - Body ground |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
G49-12 (SG) - G48-7 (GND) |
Shield - BR |
External device connection detection signal |
Always |
Below 1 V |
G49-15 (PKB) - G48-7 (GND) |
LG - BR |
Parking Bake signal |
See "Vehicle Signal Check Mode" in Operation Check (See page
|
- |
G49-17 (SPD) - G48-7 (GND) |
SB - BR |
Vehicle speed signal |
See "Vehicle Signal Check Mode" in Operation Check (See page
|
- |
G49-18 (SGND) - Body ground |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
G49-19 (MIN-) - G48-7 (GND) |
W - BR |
Microphone voice signal |
See "Check Microphone" in Operation Check (See page
|
- |
G49-21 (SW1) - G49-23 (SWG) |
W - L |
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 |
|||
G49-22 (SW2) - G49-23 (SWG) |
R - L |
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 |
|||
G49-23 (SWG) - Body ground |
L - Body ground |
Steering pad switch ground |
Always |
Below 1 V |
G49-24 (SW3) - G49-23 (SWG) |
P - L |
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 |
|||
G49-25 (ADPG) - G48-7 (GND) |
V - BR |
External device connection detection signal |
External device connected |
Below 1 V |
External device not connected |
2.1 to 3 V |
|||
G49-26 (VAR+) - G49-27 (VA-) |
R - W |
Sound signal (Right) |
External device playing (When stereo jack used) |
A waveform synchronized with sounds is output |
G49-27 (VA-) - G48-7 (GND) |
W - BR |
Ground |
Always |
Below 1 V |
G49-28 (VAL+) - G49-27 (VA-) |
B - W |
Sound signal (Left) |
External device playing (When stereo jack used) |
A waveform synchronized with sounds is output |
G50-11 (CA+) - G48-7 (GND) |
R - BR |
Television camera power supply |
Ignition switch ON Shift lever in R |
5.5 to 7.05 V |
G50-12 (V+) - G48-7 (GND) |
W - 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) |
|||
G50-23 (CGND) - Body ground |
Shield - Body ground |
Shield ground |
Always |
Below 1 V |
G50-24 (V-) - G48-7 (GND) |
B - BR |
Ground |
Always |
Below 1 V |
G51-1 (USV1) |
# |
Power source |
- |
- |
G51-2 (US1-) |
# |
Data signal |
- |
- |
G51-3 (US1+) |
# |
Data signal |
- |
- |
G51-4 (UGD1) |
# |
Ground |
- |
- |
G51-5 (USG1) |
# |
Shield ground |
- |
- |
G52-1 (FMSUB1) |
# |
Radio SUB signal |
- |
- |
G52-2 (R+B1) - G48-7 (GND) |
# - BR |
Power source of antenna |
Ignition switch ACC Radio switch on and FM or AM selected |
11 to 14 V |
G52-3 (AMFM1) |
# |
Radio MAIN signal |
- |
- |
s5-1 (USV4)*1 |
# |
Power source |
- |
- |
s5-2 (US4-)*1 |
# |
Data signal |
- |
- |
s5-3 (US4+)*1 |
# |
Data signal |
- |
- |
s5-4 (UGD4)*1 |
# |
Ground |
- |
- |
s6-1 (LV1)*1 |
B |
LVDS communication signal |
- |
- |
t3-3 (ACC2) - G48-7 (GND)*1 |
Y - BR |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14V |
|||
t3-4 (+B2) - G48-7 (GND)*1 |
R - BR |
Power source (+B) |
Always |
11 to 14V |
t3-8 (GND2) - Body ground*1 |
B - Body ground |
Ground |
Always |
Below 1 V |
#: There is no wire color information.
*1: w/ SDARS System
(a) Reference (Oscilloscope waveform):
(1) Waveform 1 (camera lens not covered, displaying an image)
Item |
Content |
---|---|
Measurement terminal |
G50-12 (V+) - G48-7 (GND) |
Measurement 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 television camera assembly.
(2) Waveform 2 (camera lens covered, blacking out the screen)
Item |
Content |
---|---|
Measurement terminal |
G50-12 (V+) - G48-7 (GND) |
Measurement 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.
Text in Illustration
*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 |
---|---|---|---|---|
t2-3 (ACC2) - t2-8 (GND2) |
Y - B |
Power source (ACC) |
Ignition switch off |
Below 1 V |
Ignition switch ACC |
11 to 14 V |
|||
t2-4 (+B2) - t2-8 (GND2) |
R - B |
Power source (+B) |
Always |
11 to 14 V |
t2-8 (GND2) - Body ground |
B - Body ground |
Ground |
Always |
Below 1 V |
s2-1 (USV4) |
# |
Power source |
- |
- |
s2-2 (USV4-) |
# |
Data signal |
- |
- |
s2-3 (USV4+) |
# |
Data signal |
- |
- |
s2-4 (UGD4) |
# |
Ground |
- |
- |
s2-5 (USG4) |
# |
Shield ground |
- |
- |
s4-1 (LV1) |
# |
LVDS communication signal |
- |
- |
G42-1 (SDARS1) |
# |
Satellite radio signal |
- |
- |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and
other items to be operated without removing any parts. This non-intrusive functional
inspection can be very useful because inter ...
Disassembly
DISASSEMBLY
PROCEDURE
1. INSPECT DIFFERENTIAL RING GEAR BACKLASH
(a) Using SST and a dial indicator, measure the ring gear backlash.
SST: 09564-32011
Standard backlash:
0.11 to 0.21 mm (0.00433 to 0.00827 in.)
If the backlash is not as specified, adj ...