1

WHT

+B BACK UP(+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. 16 (15 A) in the under-hood fuse/relay box.

2

PUR

ACC RADIO (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. 35 (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

BRN

BACK LT− (Back light)

Reverse signal of select lever from backup light switch

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. 10 (7.5 A) in the under-dash fuse/relay box.

6

BLU

VSP (Vehicle speed pulse)

Vehicle speed pulse signal from ECM

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

RED

DIAG + (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

YEL

DIAG − (Diagnostic negative)

Ground for service check signal

0 V

If open: No effect on system.

If short to ground: No effect on system.