No Picture Is Displayed

NOTE:

Check the vehicle battery condition first .
Check if the display mode ( ) button has been pressed, and turned off the display (see the Navigation Manual for more information).
If the audio-navigation unit displays an error message when you turn on the navigation system, follow the instructions .
Check the connectors for poor connections or loose terminals.

Problem verification 1
-1. Press the engine start/stop button to select the ON mode.

-2. Check if the navigation display unit displays the Acura globe screen.

Is the Acura globe screen displayed?

YES

Go to step 2.

NO

The failure is duplicated, go to step 3.
Problem verification 2
-1. Check if the navigation display unit displays the disclaimer screen.

Is the disclaimer screen displayed?

YES

Intermittent failure, the system is OK at this time.

NO: USA and Canada models

The failure is duplicated, go to step 15.

NO: Except USA and Canada models

The failure is duplicated, go to step 16.
Determine possible failure area (navigation display unit power and ground circuit, others)
-1. Shield the navigation display unit from the sun with your hand, and check that the display is back lit (only the back light is on).

Can you see the back light?

YES

Go to step 4.

NO

Go to step 11.

Open wire check (+B BACK UP line)

-1. Press the engine start/stop button to select the OFF mode.

-2. Measure the voltage between test points 1 and 2.

Test condition	OFF mode
Test circuit	+B BACK UP
Test point 1	Audio-navigation unit connector A (24P) No. 3 (WHT)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there battery voltage?

YES

The +B BACK UP wire is OK. Go to step 5.

Repair an open in the wire between the No. A29 (10 A) fuse in the under-hood fuse/relay box and the audio-navigation unit.

Open wire check (ACC line)

-1. Press the engine start/stop button to select the ON mode.

-2. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	ACC
Test point 1	Audio-navigation unit connector A (24P) No. 24 (PUR)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there battery voltage?

YES

The ACC wire is OK. Go to step 6.

Repair an open in the wire between the No. B19 (7.5 A) fuse in the under-dash fuse/relay box and the audio-navigation unit.

Open wire check (GND line)

-1. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	GND
Test point 1	Audio-navigation unit connector A (24P) No. 1 (BLK)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there less than 0.2 V?

YES

The GND wire is OK. Go to step 7.

Repair an open or high resistance in the wire between the audio-navigation unit and body ground (G504).

Shorted wire check (DISPLAY VBS line)

-1. Press the engine start/stop button to select the OFF mode.

-2. Disconnect the following connectors.

Audio-navigation unit connector F (16P)

Navigation display unit 36P connector

-3. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	Audio-navigation unit connector F (16P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	DISPLAY VBS
Test point 1	Navigation display unit 36P connector No. 2 (BRN)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short to body ground in the wire between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

The DISPLAY VBS wire is not shorted to ground. Go to step 8.

Shorted wire check (DISPLAY VBS line to another lines)

-1. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	Audio-navigation unit connector F (16P): disconnected
	Navigation display unit 36P connector: disconnected

Test circuits	Connector: Audio-navigation unit connector F (16P)
Test circuits	Test point 1	Test points 2
DISPLAY VBS to DISPLAY R, DISPLAY G, DISPLAY B, DISPLAY RGB GND, DISPLAY YS, DISPLAY SYNC GND, SH DISPLAY RGB,	No. 9 (BRN)	No. 1 (WHT), No. 2 (RED), No. 3 (YEL), No. 4 (BLK), No. 10 (GRN), No. 11 (BLU), No. 12 (GRY)

Courtesy of HONDA, U.S.A., INC.

Is there continuity between any of the terminals?

YES

There is a short in the wires between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

The DISPLAY VBS wire is not shorted in the wires. Go to step 9.

Open wire check (DISPLAY VBS line)

-1. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	Audio-navigation unit connector F (16P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	DISPLAY VBS
Test point 1	Audio-navigation unit connector F (16P) No. 9 (BRN)
Test point 2	Navigation display unit 36P connector No. 2 (BRN)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The DISPLAY VBS wire is OK. Go to step 10.

There is an open in the wire between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

Audio-navigation unit check
-1. Substitute a known-good navigation display unit .

-2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Replace the original navigation display unit.

NO

Replace the audio-navigation unit .

Fuse check

-1. Press the engine start/stop button to select the OFF mode.

-2. Check the following fuses.

Fuse	No. A29 (10 A)
Location	Under-hood fuse/relay box

Fuse	No. B19 (7.5 A)
Location	Under-dash fuse/relay box

Are the fuses OK?

YES

Go to step 12.

Replace the fuse(s), and recheck. If the fuse(s) blows again, check for a short in the No. A29 (10 A) fuse and/or the No. B19 (7.5 A) fuse circuits.

Open wire check (+B BACK UP line)

-1. Measure the voltage between test points 1 and 2.

Test condition	OFF mode
Test circuit	+B BACK UP
Test point 1	Navigation display unit 36P connector No. 18 (WHT)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there battery voltage?

YES

The +B BACK UP wire is OK. Go to step 13.

Repair an open in the wire between the No. A29 (10 A) fuse in the under-hood fuse/relay box and the navigation display unit.

Open wire check (ACC line)

-1. Press the engine start/stop button to select the ON mode.

-2. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	ACC
Test point 1	Navigation display unit 36P connector No. 17 (PUR)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there battery voltage?

YES

The ACC wire is OK. Go to step 14.

Repair an open in the wire between the No. B19 (7.5 A) fuse in the under-dash fuse/relay box and the navigation display unit.

Open wire check (GND line)

-1. Measure the voltage between test points 1 and 2.

Test condition	ON mode
Test circuit	GND
Test point 1	Navigation display unit 36P connector No. 36 (GRY)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there less than 0.2 V?

YES

Replace the navigation display unit .

Repair an open or high resistance in the wire between the navigation display unit and body ground (G502).

Determine possible failure area (related unit, others) 1

-1. Press the engine start/stop button to select the OFF mode.

-2. Disconnect the following connectors.

AcuraLink control unit (XM receiver) connector A (32P) (USA models)

XM receiver connector A (14P) (Canada models)

-3. Press the engine start/stop button to select the ON mode.

-4. Check if the navigation display unit displays the disclaimer screen.

Is the disclaimer screen displayed?

YES: USA models

Replace the AcuraLink control unit (XM receiver) .

YES: Canada models

Replace the XM receiver .

Go to step 16.

Determine possible failure area (related unit, others) 2
-1. Press the engine start/stop button to select the OFF mode.

-2. Disconnect the following connector.

HandsFreeLink control unit 32P connector

-3. Press the engine start/stop button to select the ON mode.

-4. Check if the navigation display unit displays the disclaimer screen.

Is the disclaimer screen displayed?

YES

Replace the HandsFreeLink control unit .

NO

Go to step 17.

Open wire check (GA BUS+ line, GA BUS- line)

-1. Press the engine start/stop button to select the OFF mode.

-2. Disconnect the following connectors.

Audio-navigation unit connector C (14P)

Navigation display unit 36P connector

-3. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	AcuraLink control unit (XM receiver) connector A (32P) (USA models): disconnected
	XM receiver connector A (14P) (Canada models): disconnected
	HandsFreeLink control unit 32P connector: disconnected
	Audio-navigation unit connector C (14P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	GA BUS-
Test point 1	Audio-navigation unit connector C (14P) No. 11 (PNK)
Test point 2	Navigation display unit 36P connector No. 22 (PNK)

Test circuit	GA BUS+
Test point 1	Audio-navigation unit connector C (14P) No. 12 (BLU)
Test point 2	Navigation display unit 36P connector No. 23 (BLU)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The GA BUS+ and the GA BUS- wires are OK. Go to step 18.

There is an open in the wire(s) between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

Shorted wire check (GA BUS+ line, GA BUS- line)

-1. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	AcuraLink control unit (XM receiver) connector A (32P) (USA models): disconnected
	XM receiver connector A (14P) (Canada models): disconnected
	HandsFreeLink control unit 32P connector: disconnected
	Audio-navigation unit connector C (14P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	GA BUS-
Test point 1	Audio-navigation unit connector C (14P) No. 11 (PNK)
Test point 2	Body ground

Test circuit	GA BUS+
Test point 1	Audio-navigation unit connector C (14P) No. 12 (BLU)
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short to body ground in the wire(s) between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted to ground. Go to step 19.

Shorted wire check (GA BUS+ line to GA BUS- line)

-1. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	AcuraLink control unit (XM receiver) connector A (32P) (USA models): disconnected
	XM receiver connector A (14P) (Canada models): disconnected
	HandsFreeLink control unit 32P connector: disconnected
	Audio-navigation unit connector C (14P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	GA BUS- , GA BUS+
Test point 1	Audio-navigation unit connector C (14P) No. 11 (PNK)
Test point 2	Audio-navigation unit connector C (14P) No. 12 (BLU)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted. Go to step 20.

Shorted wire check (SH GA BUS line to another lines)

-1. Check for continuity between test points 1 and 2.

Test condition	OFF mode
	AcuraLink control unit (XM receiver) connector A (32P) (USA models): disconnected
	XM receiver connector A (14P) (Canada models): disconnected
	HandsFreeLink control unit 32P connector: disconnected
	Audio-navigation unit connector C (14P): disconnected
	Navigation display unit 36P connector: disconnected
Test circuit	SH GA BUS, GA BUS+
Test point 1	Audio-navigation unit connector C (14P) No. 4 (GRY)
Test point 2	Audio-navigation unit connector C (14P) No. 12 (BLU)

Test circuit	SH GA BUS, GA BUS-
Test point 1	Audio-navigation unit connector C (14P) No. 4 (GRY)
Test point 2	Audio-navigation unit connector C (14P) No. 11 (PNK)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

The SH GA BUS wire is OK. Go to step 21.

Audio-navigation unit check
-1. Substitute a known-good navigation display unit .

-2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Replace the original navigation display unit.

NO

Replace the audio-navigation unit .