Acura RL. Manual - part 651

Fig. 44: Identifying Navigation Unit Connector A (20P) Wire Side
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity to any other wire?

YES - Repair short in the affected wire(s) between climate control unit connector (40P) and
navigation unit connector A (20P).

NO - Go to step 6.

6. Check for continuity between navigation unit connector A (20P) and body ground according to the

table.

NAVIGATION UNIT CONNECTOR REFERENCE

Fig. 45: Identifying Navigation Unit Connector A (20P) Wire Side
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Turn the ignition switch to ON (II).

8. Measure the voltage between navigation unit connector A (20P) No. 4, No. 14, and No. 15 and body

ground.

NAVIGATION UNIT CONNECTOR REFERENCE

Navigation control unit connector A (20P) terminal Wire color

No. 4

ORN

No. 14

PUR

No. 15

BRN

Navigation control unit connector A (20P) terminal Wire color

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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

Page 63

Fig. 46: Identifying Navigation Unit Connector A (20P) Wire Side
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there more than 0.2 V to ground on any wire?

YES - Repair short to power on the affected wire(s).

NO - Go to step 9.

9. Substitute and a known-good climate control unit. Reconnect all connectors and retest.

Does the symptom go away?

YES - Replace the original climate control unit.

NO - Replace the navigation unit.

DISPLAY DAY/NIGHT MODE DOES NOT WORK

No. 4

ORN

No. 14

PUR

No. 15

BRN

NOTE:



Make sure the remotes are linked. This is indicated when the MID
displays "Welcome Driver 1" or "Welcome Driver 2." If the remotes are
not linked, refer to the Owner's manual for more information.



Always check the connectors for poor connections or loose terminals.



Before troubleshooting, make sure you have the anti-theft code for the
audio system and the navigation system.



After troubleshooting, enter the anti-theft code for the audio system
and the navigation system.



Always check for and resolve all CAN DTCs before troubleshooting the
navigation system.



Verify that the correct navigation unit is installed for this model.

Go into the Diagnostic mode and use Version.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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

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1. Change the day/night mode to auto mode under Set-up, and recheck. Turn the headlights on, and

adjust the dash brightness to the middle range.

Does the display change to day and night modes When turning the headlights on and off?

YES - The system is OK at this time.

NO - Go to step 3.

2. Go into the Diagnostic mode, and use the "Car Status" diagnostic to check for an ILL signal (see

CAR STATUS ).

Is the "ILL" signal OK?

YES - Go to step 3.

NO - Check the ILL+ circuit for an open or short to ground between the navigation unit and small
light relay. If OK, substitute a known-good navigation unit and recheck.

3. Go into the Diagnostic mode and use the Navi System Link diagnostic to check the Air-Con link.

Is the Air-Con link red?

YES - Check the A/C-SI, A/C-SO, and A/C CLK circuits between the HVAC unit and the navigation
unit for open or short to ground. If the circuits are OK, substitute a known-good HVAC unit, then the
navigation unit until the problem goes away. Replace the original faulty component.

NO - Substitute components in this order until the problem goes away: Navigation unit, HVAC unit,
Gauge unit.

SYSTEM LOCKS UP OR FREEZES CONSTANTLY



Always make sure that the correct DVD color and version are installed.



Check on-line for service bulletins or other service information for the
navigation system.

NOTE:



Always check for and resolve all CAN DTCs before troubleshooting the
navigation system.



Always check the connectors for poor connections or loose terminals.



Before troubleshooting, make sure you have the navigation system
anti-theft codes.



After troubleshooting, enter the navigation system anti-theft codes.



Verify that the correct navigation unit is installed for this model.

Go into the Diagnostic mode and use "Version" (see VERSION ).



Always make sure that the correct DVD color and version are installed.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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

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1. Start the engine, turn the ignition switch OFF, then turn the ignition switch ON (II).

Does the system reboot?

YES - The system is OK at this time.

NO - Check the DVD for scratches or damage and the navigation unit for water damage. If OK, go
into the Diagnostic mode and do all of the "Unit Check" diagnostics (see UNIT CHECK ).

VEHICLE ICON WANDERS ACROSS THE MAP WHEN DRIVING (DOES NOT FOLLOW A
DISPLAYED ROAD) OR MAP OR VEHICLE ICON SPINS

1. Go into the Diagnostic mode, and do the Navi System Link diagnostic (see NAVI SYSTEM LINK ),

the Navi ECU diagnostic under "Unit Check" (see UNIT CHECK ), the Car Status check (see CAR
STATUS ), the GPS Information check (see GPS INFORMATION ), the GPS Detail check (see
GPS DETAIL ), and the Yaw Rate check (see YAW RATE TUNING ).

Are all the tests OK?

YES - The system is OK at this time.

NO - Repair the affected system. If the problem persists, swap a known-good navigation unit, and
monitor the condition.



Check on-line for service bulletins or other service information for the
navigation system.

NOTE:



Always check for and resolve all CAN DTCs before troubleshooting the
navigation system.



Always check the connectors for poor connections or loose terminals.



Before troubleshooting, make sure you have the navigation system
anti-theft codes.



After troubleshooting, enter the navigation system anti-theft codes.



Verify that the correct navigation unit is installed for this model.

Go into the Diagnostic mode and use "Version" (see VERSION ).



Always make sure that the correct DVD color and version are installed.



Check on-line for service bulletins or other service information for the
navigation system.



This is not the same condition as when driving off-road (or on a fire or
logging road).



This condition is caused by a loss of map matching from a bad sensor
(Yaw rate, GPS, or VSP) input. Check for aftermarket or other objects
that can block the GPS signal. Always perform Map matching (see MAP
MATCHING ) before proceeding with the troubleshooting.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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

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