Acura TSX / Honda Accord CL. Manual — part 170

Fig. 52: Checking For Continuity Between Navigation Unit Connector B (14P) Terminal No. 11
And Terminals No. 5 And No. 12

Is there continuity?

YES -Repair short to ground in the harness between the navigation and audio units. Replace the affected
shielded harness.

NO -Go to step 9.

9. Check for continuity between navigation unit connector B (14P) terminal No. 5 and the audio unit

connector A (20P) terminal No. 13.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

Fig. 53: Checking For Continuity Between Navigation Unit Connector B (14P) Terminal No. 5 And
The Audio Unit Connector A (20P) Terminal No. 13

Is there continuity?

YES -Go to step 10.

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

10. Check for continuity between navigation unit connector B (14P) terminal No. 12 and the audio unit

connector A (20P) terminal No. 12.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

Fig. 54: Checking For Continuity Between Navigation Unit Connector B (14P) Terminal No. 12
And The Audio Unit Connector A (20P) Terminal No. 12

Is there continuity?

YES -Go to step 11.

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

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

Is the system OK?

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

YES -Replace the audio unit.

NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

VOICE CONTROL DOES NOT WORK

Diagnostic Test: Navi System Link and Functional Setup

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

z

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 a Map screen. (See the Navigation Owner's
manual for a complete list of allowed voice commands for the information being displayed).

z

Close the windows and sunroof

z

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

z

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

z

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.

z

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

z

If you speak a command with something in your mouth, the system may misunderstand your command.

1. Go into the Diagnostic mode and use the "Mic Level" diagnostic under Functional Setup (see MIC

LEVEL ) 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) terminal No. 10 or
a faulty voice control switch assembly.

2. Use the "Mic Level" diagnostic under Functional Setup (see MIC LEVEL ) to check the operation

of the microphone.

Is the microphone operational?

NOTE:

z

Always check the connectors for poor connections or loose terminals.

z

Before troubleshooting, write down the customer's radio station presets,
and get the radio and navigation system anti-theft codes.

z

After troubleshooting, enter the radio and navigation system anti-theft
codes, and the radio station presets.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX