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Acura RL. Manual - part 643

Navigation Unit Connector A (20P)

NAVIGATION UNIT CONNECTOR REFERENCE



B1168 Gauge
Control Module loss
of Comm. (Engine)



B1169 Gauge
Control Module loss
of Comm. (A/T)



B1178 F-CAN
communication
Circuit error.



U0073 (F-CAN bus
off)



U0155 (F-CAN
Gauge control
module)



U0121 (F-CAN VSA
control)

GRY

(1)

SH DISP BUS
(Shield display
bus)

Shield for display
bus No. 10, 20
terminals

0 V

If open: No change to
display.
If short to ground: No
change to display.

GRN

DISP BUS (+)
(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.

(1)

The shielded wires have a heat-shrunk 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 listed on the
schematic.

Terminal

Number

Wire

Color

Terminal

Name

Description

Voltage

(about)

Symptom

YEL

BSIG (Blue
signal)

Blue color signal

0.2 V AC
average in
RGB color
diagnostic
mode

If open: Blue color missing
(see "RGB COLOR"
diagnostic).
If short to ground: Blue color
missing (see "RGB COLOR"
diagnostic).

BRN

CSIG
(Composite
signal)

Composite video
(vertical/horizontal)
Synchronizing signal

0.2 VAC
average in
RGB color
diagnostic
mode

If open: Picture rolls
horizontally, colors still
visible. If short to ground:
Picture rolls horizontally,
colors still visible.

BLU

GND SIG
(Ground
signal)

Ground for color signal 0 V

If open: No change to display.
If short to ground: No change
to display.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 31

PUR

A/C-SO (Air
conditioner
serial out)

Communication signal
for climate control unit

BRN

A/C-CLK
(Air
conditioner
clock)

Check signal for
climate control unit

WHT JOG (Jog)

Interface dial operation
signal

0-5 V pulses

If open: You cannot operate
navigation system
If short to ground: You cannot
operate navigation system

BLK

CAN-L
(CAN low)

F-CAN bus
communication

Pulses 2.5-6
V 2.5 V
average
(depends on
Bus traffic)

If open:

1. System Links PCM,

and Gauge Control
Module both show
"NG."

2. F-CAN diagnostic =

"NG."

3. B-CAN diagnostic =

"NG."

4. Car status CHG (CAN)

= 0.

5. Functional Setup, Trip

info, FUP & Sampled
FL = 0.

If short to ground: Same
diagnostic conditions as when
open, and also sets the
following DTCs.



B1168 Gauge Control
Module loss of Comm.
(Engine)



B1169 Gauge Control
Module loss of Comm.
(A/T)



B1178 F-CAN
communication Circuit
error.



U0073 (F-CAN bus off)



U0155 (F-CAN Gauge
control module)



U0121 (F-CAN VSA
control)

GRY SH JOG

Shield for interface

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 32

NAVIGATION UNIT INPUTS AND OUTPUTS

Fig. 16: Identifying Navigation Unit Connector B (14P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NAVIGATION UNIT CONNECTOR REFERENCE

(1)

(Shield jog)

dial signal

RED

DISP BUS(-)
(Display bus
negative)

Data bus (-) GA-Net

0-5 V pulses
2.5 V average
(depends on
BUS traffic)

If open: Navigation buttons
do not work.
If short to ground: Hard
buttons work OK.

(1)

Terminal

Number

Wire

Color

Terminal

Name

Description

Voltage

(about)

Symptom

GRN

RGL(+) (Route
guidance voice
left positive)

Left audio signal of
voice guidance, and
Voice Recognition
(VR) prompts

Audio
signal
0.004-0.04
V

If open: If voice activated, the
front speakers buzz; if voice
off, no effect.
If short to ground: If voice
activated, the front speakers
buzz; if voice off, no effect.

GRN

MIC SIG (+)
(Mic signal
positive)

Microphone output
signal positive

4-5 V
(TALK
button
pressed)

If open: No microphone signal
shown in diagnostic screens:
"Navi System Link" and
Functional Setup "Mic Level."
If short to ground: No
microphone signal shown in
diagnostic screens: "Navi
System Link" and Functional
Setup "Mic Level."

PUR

STRG SW
(Steering
wheel
switches)

Steering wheel switch
output

4-5 V
(TALK
button
pressed)
2.5-3 V
(BACK

If open: Steering wheel TALK
and BACK buttons do not
work.
If short to ground: Steering
wheel TALK, and BACK

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 33

NAVIGATION UNIT INPUTS AND OUTPUTS

Fig. 17: Identifying Navigation Unit Connector C (8P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NAVIGATION UNIT CONNECTOR REFERENCE

button
pressed)

buttons do not work.

GRY

(1)

SH RG (Shield
route guidance)

Shield for No. 5,12
terminals

0 V

If open: No effect on voice
output.
If short to ground: No effect
on voice output.

RED

GND RG
(Ground route
guidance)

Ground for voice
guidance, and Voice
Recognition (VR)
prompts

0 V

If open: No effect on voice
output.
If short to ground: No effect
on voice output.

GRY

(1)

SHMIC
(Shield mic)

Shield for No. 6,14
terminals

0 V

If open: No effect on voice
control.
If short to ground: No effect
on voice control.

RED

GND MIC
(Ground mic)

Ground for
microphone signal

0 V

If open: No microphone signal
shown in diagnostics: "Navi
System Link" and Functional
Setup "Mic Level."
If short to ground: No effect
on voice recognition.

(1)

Terminal

Number

Wire

Color

Terminal

Name

Description

Voltage

(about)

Symptom

WHT

+B (+B Power Continuous power

Battery voltage

If open: Display picture
goes out (display back
light still on).

NOTE:

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 34

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