Navigation Unit Inputs and Outputs for Connector C (8P)
Terminal Number
Wire Color
Terminal Name
Description
Voltage (about)
Symptom
1
WHT
+B (+B Power source)
Continuous power source
Battery voltage
If open: Display picture goes out (display back light still on).
NOTE: System will reboot to ‘‘enter code'' screen.
If short to ground: Blows fuse No. 7 (10 A) in the under-dash fuse/relay box.
2
RED
ACC (Accessory)
Power source for accessories
Battery voltage at ACC (I)
If open: Display picture goes out (display back light still on).
NOTE: When re-connected the system will reboot to ‘‘enter code'' screen.
If short to ground: Blows fuse No. 32 (7.5 A) in the under-dash fuse/relay box.
4
BLK
GND (Ground)
Ground for navigation unit
0 V
If open: No effect on system.
If short to ground: No effect on system.
5
GRN
BACK LT (Back light)
Reverse signal of select laver from ‘‘Multiplex Integrated Control Unit'' (A/T) or backup light switch (M/T)
In reverse, battery voltage: Otherwise 0 V
If open: Navigation never sees reverse.
Diagnostic screen ‘‘Car Status'', ‘‘Back''=0.
If short to ground: Blows fuse No. 21 (7.5 A) in the under-dash fuse/relay box.
6
LT BLU
VSP (Vehicle speed pulse)
Vehicle speed pulse signal from PCM
Pulses 0−5 V: Average 2.5 V, when moving
If open: No vehicle speed pulses.
Diagnostic screen ‘‘Car Status'', VSP Navi=0.
If short to ground: No vehicle speed pulses.
Diagnostic screen ‘‘Car Status'', VSP Navi=0.
7
BRN
DIAG P (Diagnostic positive)
Service check signal for navigation system
5−6 V
If open: No effect on system.
If short to ground: System goes into diagnostic mode.
8
GRY
DIAG N (Diagnostic negative)
Ground for service check signal
0 V
If open: No effect on system.
If short to ground: No effect on system.