|
Terminal Number
|
Wire Color
|
Terminal Name
|
Description
|
Voltage (about)
|
Symptom
|
|---|---|---|---|---|---|
|
1
|
WHT
|
+B BACK UP (+B power source)
|
Continuous power source
|
Battery voltage
|
If open: Screen completely off (no backlight visible).
If short to ground: Blows fuse No. 16 (15 A) in the under-hood fuse/relay box.
|
|
2
|
PUR
|
ACC RADIO (Accessory)
|
Power source for accessory
|
Battery voltage at ACC (I)
|
If open: Display and buttons do not work.
If short to ground: Blows fuse No. 35 (7.5 A) in the under-dash fuse/relay box.
|
|
3
|
BLU
|
GA-NET BUS (+)
|
Data bus (+) GA-Net
|
0−5 V pulses average 2.5 V depends on bus traffic
|
If open: Navigation buttons do not work.
If short to ground: Navigation buttons do not work.
|
|
4
|
BRN
*
|
GA-NET BUS SH
|
Shield for terminal No. 3, 13
|
0 V
|
If open: No change to display.
If short to ground: No change to display.
|
|
5
|
GRN
|
ECU BUS (+) (GA-NET) (Display bus positive)
|
Data bus (+) GA-Net
|
0−5 V pulses average 2.5 V depends on bus traffic
|
If open: Navigation buttons do not work.
If short to ground: Navigation buttons do not work.
|
|
6
|
GRN
|
SECURITY (+)
|
Security signal to rear screen
|
0 V
|
If open: If security system set, it will not trip when screen is removed.
If short to ground: The security system set, it will not trip when screen is removed.
|
|
8
|
WHT
|
R SIG 1 (Red signal)
|
Red color signal
|
0−1 V AC
|
If open: Red color missing (see ‘‘RGB Color'' diagnostic).
If short to ground: Red color missing (see ‘‘RGB Color'' diagnostic).
|
|
9
|
RED
|
G SIG 1 (Green signal)
|
Green color signal
|
0−1 V AC
|
If open: Green color missing (see ‘‘RGB Color'' diagnostic).
If short to ground: Green color missing (see ‘‘RGB Color'' diagnostic).
|
|
10
|
BLK
|
GND (Ground) (G503)
|
Ground for display unit
|
0 V
|
If open: No change to display.
If short to ground: No change to display.
|
|
*:
|
The shielded wires have a heat-shrink tube insulating the outside of the wire.
The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
|
|
Terminal Number
|
Wire Color
|
Terminal Name
|
Description
|
Voltage (about)
|
Symptom
|
|---|---|---|---|---|---|
|
11
|
GRY
|
ILL (+) (Illumination positive)
|
Parking light on signal from dash and console lights
|
Battery voltage if lights on: otherwise 0 V
|
If open: When brightness = ‘‘Auto'', night mode for the display is inoperative when lights on.
If short to ground: Blows fuse No. 14 (7.5 A) in under-dash fuse/relay box.
|
|
13
|
PNK
|
GA-NET BUS (−)
|
Data bus (−) GA-Net
|
0−5 V pulses average 2.5 V depends on bus traffic
|
If open: Navigation buttons do not work.
If short to ground: Navigation hard touch buttons work OK.
|
|
14
|
LT GRN
*
|
ECU BUS (GA-NET) (Shield display bus)
|
Shield for display bus terminal No. 5, 15
|
0 V
|
If open: No change to display.
If short to ground: No change to display.
|
|
15
|
RED
|
ECU BUS (−) (GA-NET) (Display bus negative)
|
Data bus (−) GA-Net
|
0−5 V pulses average 2.5 V depends on bus traffic
|
If open: Navigation buttons do not work.
If short to ground: Navigation hard touch buttons work OK.
|
|
16
|
BRN
|
SECURITY (−)
|
Security signal from CD changer
|
0 V
|
If open: The security system set, it will not trip when screen is removed.
If short to ground: If security system set, it will not trip when screen is removed.
|
|
17
|
GRN
|
GND SIG 1 (Ground signal)
|
Ground for color signal
|
0 V
|
If open: No change to display.
If short to ground: No change to display.
|
|
18
|
YEL
|
B SIG 1 (Blue signal)
|
Blue color signal
|
0−1 V AC
|
If open: Blue color missing (see ‘‘RGB Color'' diagnostic).
If short to ground: Blue color missing (see ‘‘RGB Color'' diagnostic).
|
|
19
|
BLK
|
C SIG 1 (Composite signal)
|
Composite video (vertical/horizontal) synchronizing signal
|
0.3 V AC
|
If open: Picture rolls horizontally, colors still visible.
If short to ground: Picture rolls horizontally, colors still visible.
|
|
20
|
GRY
*
|
SH SIG 1(Shield signal)
|
Shield for terminal No. 8, 9, 17, 18, 19
|
0 V
|
If open: No change to display.
If short to ground: No change to display.
|
|
*:
|
The shielded wires have a heat-shrink tube insulating the outside of the wire.
The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
|