Acura TSX / Honda Accord CL. Manual — part 169

Fig. 50: Checking For Continuity Between Display Unit 20P Connector Terminal No. 13 And Audio
Unit Connector B (14P) Terminal No. 10

Is there continuity?

YES -Replace the display unit (see AUDIO-HVAC DISPLAY PANEL
REMOVAL/INSTALLATION ).

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

GPS ICON IS WHITE

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

Diagnostic Test: Navi System Link

Before assuming that a GPS antenna reception complaint is hardware related, be aware of the following:

z

The GPS signal is extremely weak (about one billionth the strength of a radio broadcast signal received
by a radio antenna)

z

If the rear window has been tinted with metallic tint, this can seriously degrade or block GPS reception.

z

Loose items on the rear package tray can block satellite antenna reception.

z

Aftermarket devices like Lo-Jack, remote starters or other electronic devices located near the navigation
unit or GPS antenna can potentially interfere with the operation of the navigation system.

1. Check for metallic window tint on the windshield and electronic aftermarket accessories (possibly

hidden) mounted near the GPS antenna or the navigation unit.

Is there metallic window tint or electronic accessories?

YES -Remove tint or the accessories and recheck.

NO -Go to step 2.

2. Go into the Diagnostic mode and use the "Navi System Link" diagnostic (see NAVI SYSTEM LINK ) to

check the GPS antenna.

Is "GPS Ant" icon red?

YES -Check for a kinked, crushed, or disconnected GPS antenna wire. If icon is still red, replace the GPS
antenna.

NO -Check that nothing is blocking the GPS antenna located under the package shelf and recheck.
Substitute a known-good GPS antenna, and recheck.

z

If the symptom is gone, replace the GPS antenna.

z

If the symptom is still present, substitute a known-good navigation unit and recheck. If the
symptom is gone, replace the original navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION ).

VOICE GUIDANCE CANNOT BE HEARD

Diagnostic Test: Navi System Link

NOTE:

z

Make sure the vehicle is parked outside and away from buildings.

z

Refer to GPS Information (see GPS INFORMATION ) for realtime satellite
reception display.

NOTE:

z

Always check the connectors for poor connections or loose terminals.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

1. Press the display unit SET-UP button.

2. Check the volume setting for the navigation system.

Is it set to OFF?

YES -Set the volume to an audible level.

NO -Go to step 3.

3. Check the radio operation.

Can you hear the radio?

YES -Go to step 4.

NO -Troubleshoot the audio system.

4. Go into the Diagnostic mode and use the "Navi System Link" diagnostic (see NAVI SYSTEM LINK ) to

check the radio.

Is "Radio" icon red?

YES -Troubleshoot the audio system.

NO -Go to step 5.

5. Turn the ignition switch OFF.

6. Disconnect the navigation unit connector B (14P) and the audio unit connector A (20P).

7. Check for continuity between body ground and navigation unit connector B (14P) terminals No. 5, No. 12

individually.

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

Fig. 51: Checking For Continuity Between Body Ground And Navigation Unit Connector B (14P)
Terminals No. 5, 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 8.

8. Check for continuity between navigation unit connector B (14P) terminal No. 11 and terminals No. 5 and

No. 12 individually.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX