Acura TSX / Honda Accord CL. Manual — part 171

YES -Check the operation of the voice control system (see the Navigation System Owner's
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) terminals No. 6 and No. 14. If the wiring is OK,
replace the front map light assembly.

TOUCH SWITCH MALFUNCTION

Diagnostic Test: Display Under Unit Check

1. Go into the Diagnostic mode and use "Touch Panel Check" diagnostic the under Monitor Check (see

TOUCH PANEL CHECK ) to check the operation of the touch switches.

Do the switches operate normally?

YES -The system is OK at this time.

NO -Replace the display unit.

CURSOR CONSTANTLY LEAVES ROAD

Diagnostic Test: Yaw Rate and Car status

1. Check the GPS icon on the navigation picture.

Is the GPS icon white?

YES -Do the troubleshooting for GPS icon is white (see GPS ICON IS WHITE ).

NO -Go to step 2.

2. Go into the Diagnostic mode and use the "Yaw Rate" diagnostic (see YAW RATE ), to check the yaw

rate sensor.

3. Go into the Diagnostic mode and use the "Car Status" diagnostic (see CAR STATUS ), to check the

vehicle speed pulse.

Are the yaw rate sensor and vehicle speed pulse OK?

YES -The problem may be normal. Check to see if the problem occurs in the same place. If it does, the

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

problem could be in the database. Go to step 4.

NO -If the problem is the yaw rate sensor, replace the navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION ) If the problem is the vehicle speed pulse, troubleshoot the vehicle
speed signal circuit.

4. Substitute a known-good navigation unit and check to see if the problem occurs in the same place.

Does the problem occur in the same place?

YES -The problem is in the database. Report the problem according to the Navigation System Owner's
Manual under "Reporting Errors".

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

DVD SCREEN ERROR MESSAGES

Diagnostic Test: Car Status

1. Check the DVD-ROM reading surface for scratches.

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

YES -Replace the DVD-ROM (see DVD-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 ).

TRIP COMPUTER-NO DISTANCE

Diagnostic Test: Car Status

1. Go into the Diagnostic Mode and use "Car Status" diagnostic (see CAR STATUS ) to check for a vehicle

NOTE:

z

Check the Navigation System Owner's Manual for a list of common DVD
screen error messages and the probable cause.

z

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

NOTE:

z

Always check the connectors for poor connections or loose terminals.

z

Before troubleshooting, get the navigation system anti-theft codes.

z

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

z

If the Previous button on the Trip Computer screen is not active, make
sure to answer OK to the Disclaimer screen.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

speed pulse (VSP).

Is there a VSP when the vehicle is moving?

YES -Check the CAN bus wires for an open or short to ground between navigation unit connector A
(20P) terminals No. 8 and No. 18 and PCM connector B (56P) terminals No. 6 and No. 2. If OK, replace
the navigation unit.

NO -Check the VSP wire for an open or short to ground between navigation unit connector C (8P)
terminal No. 6 and PCM connector B (56P) terminal No. 46.

TRIP COMPUTER-NO FUEL INFORMATION

Diagnostic Test: Navi System Link

Perform the "Navi System Link" check (see NAVI SYSTEM LINK ) to check the communication line between
the PCM (FI-ECU) and the navigation unit.

1. Start the engine.

2. Go into the Diagnostic mode and use "Trip Information" diagnostic under Functional Setup (see TRIP

INFORMATION ).

Are the values greater than zero?

YES -The system is OK.

NO -Check for B or F-CAN DTCs, then troubleshoot them.

NAVIGATION CANNOT CONTROL A/C

Diagnostic Test: Navi System Link

1. Go into the Diagnostic Mode and perform the "Navi System Link" check (see NAVI SYSTEM LINK ).

NOTE:

z

Always check the connectors for poor connections or loose terminals.

z

Before troubleshooting, get the navigation system anti-theft codes.

z

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

z

If the Previous button on the Trip Computer screen is not active, make
sure to answer OK to the Disclaimer screen.

NOTE:

z

Always check the connectors for poor connections or loose terminals.

z

Before troubleshooting, get the navigation system anti-theft codes.

z

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

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX

Is "Air-con" icon red?

YES -Do the climate control system troubleshooting.

NO -Check for loose connection at the climate control unit and display unit. If OK, replace the display
unit (see AUDIO-HVAC DISPLAY PANEL REMOVAL/INSTALLATION ).

DISPLAY DAY/NIGHT MODE DOES NOT WORK

Diagnostic Test: Car Status

1. Make sure the instrument panel brightness control is not on full brightness.

2. Change the day/night mode to AUTO under "Set-up" and recheck.

Does the display change to day and night modes?

YES -The system is OK at this time.

NO -Go to step 3.

3. Go into the Diagnostic Mode and use "Car Status" to check the ILL signal (see CAR STATUS ) by

turning the head lights ON, then OFF.

Is the "ILL" signal OK?

YES -The system is OK.

NO -Check the ILL+ circuit between the navigation unit and relay module.

SYSTEM LOCKS UP CONSTANTLY

Diagnostic Test: Unit Check

Check the DVD for scratches or damage and the navigation unit for water damage. If OK, perform all of the
"Unit Check" checks under System Diagnosis Test (see UNIT CHECK ).

VEHICLE ICON SPINS WHEN PARKED

Diagnostic Test: Yaw Rate

NOTE:

z

Always check the connectors for poor connections or loose terminals.

z

Before troubleshooting, get the navigation system anti-theft codes.

z

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

z

Full brightness on the instrument panel brightness control causes the
system to stay in the day mode, even when the lights are on.

2004 Acura TSX

2004 ACCESSORIES & EQUIPMENT Navigation System - TSX