Acura CSX. Manual — part 655

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ＳＮＲ９ＡＮＧＫ７６１０００Ｎ２７０３ＦＡＡＴ０２

−

−

−

−

DTC 2702:

DTC 2703:

YES

NO

YES

NO

23-331

23-331

GPS Diag: Receiver in Navi ECU

Aircon Diag

NOTE:

• Check the vehicle battery condition first.
• Before you troubleshoot, make sure to follow the

general troubleshooting information (see page
23-266).

• Make sure the vehicle is parked outside, away from

buildings.

• Check for electronic aftermarket accessories

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

1. Clear the hard error code (see page 23-274).

2. Turn the ignition switch to LOCK (0), and then back

to ON (II).

3. Go into the Diagnostic Menu, and Select the Self-

Diagnosis Mode in the Select Diagnosis Items
Menu (see page 23-297).

4. Select the System Links, then select the GPS Ant.

Intermittent failure, the system is OK at this

time.

Replace the navigation unit (see page 23-355).

NOTE:

• Check the vehicle battery condition first.
• Check for B-CAN DTCs and resolve them before

troubleshooting.

• Before you troubleshoot, make sure to follow the

general troubleshooting information (see page
23-266).

• DTC 2703 can be stored when the ignition switch is at

ACCESSORY (I). With the ignition switch is in
ACCESSORY (I), the climate control unit is turned off
and the navigation unit loses communication and
stores DTCs. Therefore, there is a possibility that the
system is normal even DTC 2703 is stored. Check
system links (see page 23-297) with the engine
running, and if it shows normal, the system is OK at
this time. If not, do this troubleshooting.

1. Clear the hard error code (see page 23-274).

2. Turn the ignition switch to LOCK (0), and then back

to ON (II).

3. Go into the Diagnostic Menu, and Select the Self-

Diagnosis Mode in the Select Diagnosis Items
Menu (see page 23-297).

4. Check the System Links.

Go to step 5.

Intermittent failure, the system is OK at this

time.

5. Turn the ignition switch to LOCK (0).

Is Receiver in Navi ECU OK indicated?

Is the Air con icon r ed?

08/08/21 14:17:48 61SNR030_230_0334

＊０１

＊０２

＊０３

−

−

−

−

YES

NO

YES

NO

23-332

Navigation System

NAVIGATION UNIT CONNECTOR D (12P)

AC SI
(YEL)

AC CLK
(BLU)

AC SO
(RED)

JUMPER WIRE

CLIMATE CONTROL UNIT CONNECTOR A (32P)

AC SO (RED)

AC SI (YEL)

AC CLK (BLU)

JUMPER WIRE

NAVIGATION UNIT CONNECTOR D (12P)

AC SI
(YEL)

AC CLK
(BLU)

AC SO
(RED)

6. Disconnect navigation unit connector D (12P).

7. Connect navigation unit connector D (12P)

terminals No. 5, No. 6, and No. 12 with a jumper
wire.

8. Turn the ignition switch to ON (II).

9. Press the RECIRCULATION and OFF buttons.

Replace the navigation unit (see page 23-355).

Go to step 10.

10. Turn the ignition switch to LOCK (0), then

disconnect the jumper wire.

11. Disconnect climate control unit connecter A (32P).

12. Connect climate control unit connector A (32P)

terminals No. 28, No. 29, and No. 30 with a jumper
wire.

13. Check for continuity between navigation unit

connector D (12P) terminals No. 5 and No. 6, then
between terminals No. 5 and No. 12.

Go to step 14.

Repair open in the wire(s) between the

navigation unit and the climate control unit.

14. Disconnect the jumper wire.

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Does the RECIRCULAT ION indicator tur n on?

Is ther e continuity?

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＊０４

＊０５

−

−

−

−

YES

NO

From terminal

To terminals

YES

NO

23-333

NAVIGATION UNIT CONNECTOR D (12P)

AC SI
(YEL)

AC CLK
(BLU)

AC SO
(RED)

NAVIGATION UNIT CONNECTOR D (12P)

15. Check for continuity between body ground and

navigation unit connector D (12P) terminals No. 5,
No. 6, and No. 12 individually.

Repair short to body ground in the wire(s)

between the navigation unit and the climate control
unit.

Go to step 16.

16. Check for continuity between the terminal of

navigation unit connector D (12P) according to the
table.

D5 (YEL)

D6 (RED), D12 (BLU)

D6 (RED)

D12 (BLU)

Repair short in the wire(s) between the

navigation unit and climate control unit.

Go to step 17.

Wire side of female terminals

Wire side of female terminals

Ar e ther e continuity?

Is ther e continuity?

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＊０６

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−

−

−

−

−

−

YES

NO

YES

NO

YES

NO

DTC 2705:

23-334

23-334

Navigation System

NAVIGATION UNIT CONNECTOR D (12P)

AC SI
(YEL)

AC CLK
(BLU)

AC SO
(RED)

17. Turn the ignition switch to ON (II).

18. Measure the voltage between body ground and

navigation unit connector D (12P) terminals No. 5,
No. 6, and No. 12 individually.

Repair short to power in the wire(s) between

the navigation unit and the climate control unit.

Replace the climate control unit (see page

21-75).

NOTE: Before you troubleshoot, make sure to follow the
general troubleshooting information (see page 23-266).

1. Clear the hard error code (see page 23-274).

2. Turn the ignition switch to LOCK (0), and then back

to ON (II).

3. Go into the Diagnostic Menu, and Select the Self-

Diagnosis Mode in the Select Diagnosis Items
Menu (see page 23-297).

4. Select the System Links.

Go to step 5.

Intermittent failure, the system is OK at this

time.

5. Turn the ignition switch to LOCK (0).

6. Connect the HDS to the DLC (see page 23-359).

7. Clear the DTCs with the HDS.

8. Turn the ignition switch to LOCK (0), and then back

to ON (II).

9. Check for DTCs with the HDS.

Do the HFL DTC troubleshooting.

Go to step 10.

10. Turn the ignition switch to LOCK (0).

11. Disconnect navigation unit connector B (24P).

12. Disconnect the HandsFreeLink control unit 28P

connector.

HFL Diag

Wire side of female terminals

Is ther e voltage above 0.2 V ?

Is the HF L icon r ed?

Ar e ther e any HF L DT Cs indicated?

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