Acura RL. Manual - part 650

connector C (23P) No. 3 terminal.

Fig. 41: Checking Continuity Between No. 12 Terminal And Amplifier Unit Connector C (23P)
No. 3 Terminal
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 11.

NO - There is an open in the circuit between the navigation unit and the amplifier unit. Check for poor
connections or loose terminals at the amplifier and navigation units. If a poor connection or loose
terminal is found, replace the affected shielded harness.

11. Substitute a known-good navigation unit, and recheck.

Is the system OK?

YES - Replace the original navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION ).

NO - Replace the amplifier unit.

VOICE CONTROL DOES NOT WORK/RESPOND

NOTE:



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.



Before assuming that a voice complaint is hardware related, ensure
that the voice control system is being operated correctly.



Make sure you are on the correct screen when trying to issue a
voice command. For instance, the command "Find the nearest
Italian Restaurant" only works on Map screen. (See the Navigation
System manual for a complete list of allowed voice commands for
the information being displayed).



Close the windows and sunroof.



Set the fan speed to low (1 or 2).

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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1. Go into the Diagnostic Menu, and use the "Mic Level" test the under Functional Setup (see

FUNCTIONAL SETUP ) to check the operation of the TALK and BACK buttons.

Are the TALK and BACK buttons operational?

YES - Go to step 2.

NO - Check for an open or short to ground on navigation unit connector B (14P) No. 10 terminal.

2. Use the "Mic Level" diagnostic under Functional Set-up (see FUNCTIONAL SETUP ) to check the

operation of the microphone.

Is the microphone operational?

YES - Check the operation of the voice control system (seethe Navigation System Manual).

NO - Check for a loose front map light (microphone) assembly. If OK, check for an open or short to
ground on navigation unit connector B (14P) No. 6 and No. 14 terminals.

DVD SCREEN ERROR MESSAGES

Diagnostic Test: Car Status



Adjust the air flow from the air conditioning vents so that they do
not blow against the microphone on the ceiling.



Pause after pressing the TALK button then give a voice command
clearly in a natural speaking voice. If the system cannot recognize
your command, speak louder.



If the microphone picks up voices other than yours, the system
may not interpret your voice commands correctly.



If you speak a command with something in your mouth, or your
voice is too husky, the system may misunderstand your
command.



Always check the connectors for poor connections or loose terminals.



Check for a loose roof console microphone; if it's loose, tighten it.



Before troubleshooting, write down the audio presets, and get the
audio and navigation system anti-theft codes.



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



Determine if the problem only happens to one person, or everyone who
uses the system.



If the system only has a problem with one person's voice, this should
be considered a system limitation.

NOTE:



Refer to General Troubleshooting for a list of common DVD screen
error messages and the probable cause (see ERROR MESSAGE
TABLE ).

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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1. Check the DVD-ROM reading surface for scratches and finger prints.

Are there any scratches or finger prints on the DVD-ROM reading surface?

YES - Clean or replace the DVD-ROM (see DVD-ROM/CD-ROM REPLACEMENT ).

NO - If the problem occurs occasionally when the system is cold, this is normal. If the problem occurs
frequently when driving, replace the navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION ).

NAVIGATION CANNOT CONTROL HVAC BY VOICE COMMAND

1. Connect the HDS to the DLC. Check for B-CAN or F-CAN DTCs in the data list.

Are there any DTCs in the B-CAN or F-CAN system?

YES - Troubleshoot and repair all CAN related DTCs, and then retest.

NO - Go to step 2.

2. Check the navigation system for normal operation.

Does the navigation system function normally in all other operations?

YES - Go to step 3.

NO - Refer to the navigation symptom troubleshooting. Troubleshoot and repair any other problems,
then retest.

3. Disconnect climate control unit connector (40P) and navigation unit connector A (20P).

4. Check for continuity between climate control unit connector (40P) and navigation unit connector A



Go into the Diagnostic mode and use the "Car Status" diagnostic (see
CAR STATUS ) to check the status of the DVD lid.

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 anti-theft codes for the
audio system and the navigation system.



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



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.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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(20P) according to the table.

NAVIGATION UNIT CONNECTOR REFERENCE

Fig. 42: Identifying Navigation Unit Connector A (20P) Wire Side
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig. 43: Identifying Climate Control Unit (40P) Connector Wire Side
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity on all wires?

YES - Go to step 5.

NO - Repair open in the affected wire(s) between climate control unit connector (40P) and navigation
unit connector A (20P).

5. Check for continuity between each wire in the navigation unit connector (20P) according to the table.

NAVIGATION UNIT CONNECTOR REFERENCE

Climate control unit connector (40P)

terminal

Navigation control unit connector A (20P)

terminal

Wire
color

No. 7

No. 4

ORN

No. 6

No. 14

PUR

No. 8

No. 15

BRN

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

No. 4

ORN

No. 14

PUR

No. 15

BRN

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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