PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU
CHECK PARKING ASSIST ECU
Measure the voltage and resistance and check for pulse signals according to value(s) in the table below.
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
I3-1 (+B) - I3-3 (GND1)
L - W-B
Power source signal
Engine switch off
11 to 14 V
I3-3 (GND1) - Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
I3-7 (IG) - I3-3 (GND1)
L - W-B
IG power source signal
Engine switch on (IG)
11 to 14 V
I3-8 (ACC) - I3-3 (GND1)
P - W-B
ACC power source signal
Engine switch on (ACC)
11 to 14 V
I3-21 (CANL)
W
CAN communication signal
-
-
I3-22 (CANH)
B
CAN communication signal
-
-
I3-24 (TX-)
LG
AVC-LAN communication signal
-
-
I3-25 (TX+)
L
AVC-LAN communication signal
-
-
I2-11 (CV-) - I3-3 (GND1)
W - W-B
Rear television camera ground
Always
Below 1 V
I2-12 (CV+) - I2-11 (CV-)
R - W
Rear television camera display signal (NTSC) input
Engine switch on (IG), shift lever in R
Pulse generation
(See waveform 1)
Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens
Pulse generation
(See waveform 2)
I2-13 (CGND) - I3-3 (GND1)
GR - W-B
Rear television camera shield ground
Always
Below 1 V
I2-14 (CB+) - I3-3 (GND1)
B - W-B
Power source to rear television camera
Engine switch on (IG), shift lever in R
5.5 to 7.05 V
-
Using an oscilloscope, check waveform 1.
Table 1. Measurement Condition Item
Content
Terminal No. (Symbol)
I2-12 (CV+) - I2-11 (CV-)
Tool Setting
0.2 V/DIV., 50 μsec./DIV.
Condition
Engine switch on (IG), shift lever in R
-
Using an oscilloscope, check waveform 2.
Table 2. Measurement Condition Item
Content
Terminal No. (Symbol)
I2-12 (CV+) - I2-11 (CV-)
Tool Setting
0.2 V/DIV., 50 μsec./DIV.
Condition
Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens