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Acura CSX. Manual - part 631

＊１１

＊１２

＊１３

−

Audio unit connector

Wire color

YES

From terminal

To terminals

YES

Audio unit

connector

USB adapter

unit connector

Wire color

YES

23-237

AUDIO UNIT CONNECTOR E (14P)

USB ADAPTER UNIT CONNECTOR A (14P)

11. Check for continuity between the terminals of audio

unit connector E (14P) and body ground according
to the table.

WHT

RED

E13

BLK

E14

GRN

Short to body ground in the wire(s) between

the audio unit and the USB adapter unit. Replace
the affected shielded harness.

Go to step 12.

12. Check for continuity between the terminals of audio

unit connector E (14P) according to the table.

E4 (GRY)

E5 (WHT), E6 (RED), E13 (BLK),
E14 (GRN)

E5 (WHT)

E6 (RED), E13 (BLK), E14
(GRN)

E6 (RED)

E13 (BLK), E14 (GRN)

E13 (BLK)

E14 (GRN)

Short in the wires between the audio unit

and the USB adapter unit. Replace the affected
shielded harness.

Go to step 13.

13. Check for continuity between audio unit connector

E (14P) and USB adapter unit connector A (14P)
according to the table.

WHT

RED

E13

A13

BLK

E14

A14

GRN

Substitute a known-good USB adapter unit

(see page 23-258), then reconnect all of the
connectors, and recheck. If the symptom/indication
goes away, replace the original USB adapter unit. If
the symptom/indication is still present, replace the
audio unit (see page 23-256).

Open in the wire(s) between the audio unit

and the USB adapter unit. Replace the affected
shielded harness.

Wire side of female terminals

Is ther e continuity?

Is ther e continuity between any of the ter minals?

Is ther e continuity?

08/08/21 14:10:53 61SNR030_230_0240

＊３２

ＳＮＲ９ＡＮＧＪ１０３００００００００ＦＡＡＴ３２

−

USB device does not function (with
navigation)

YES

USB adapter unit

connector

USB adapter

connector

YES

YES
NO

23-238

Audio System

USB ADAPTER UNIT CONNECTOR B (5P)

USB ADAPTER 5P CONNECTOR

NOTE:

• Check the vehicle battery condition first.
• Check the connectors for poor connections or loose

terminals.

• Check the USB device requirement:

– Mass-storage class ready digital audio player with

USB 2.0 port

– More than 256 MB of RAM
– Supports MP3, WMA, and AAC (encoded with the i-

Tunes) files, DRM files are not supported

1. Turn the ignition switch to ON (II) and turn on the

navigation unit.

2. Push the AUX button to select USB mode.

Go to step 3.

Go to step 7.

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

4. Connect the client’s USB device to a known-good

vehicle that is equipped with the USB adapter and
check the USB device operation.

Go to step 5.

USB device is faulty. Also check the USB

cable and USB adapter connector condition.

5. Disconnect USB adapter unit connector B (5P).

6. Check for continuity between terminals of USB

adapter connector B (5P) and the USB adapter 5P
connector according to the table.

Replace the USB adapter unit (see page

23-258).

Open in the wire(s) between the USB adapter

unit and the USB adapter. Replace the affected
shielded harness.

7. Check the XM operation on the navigation display.

Go to step 8.

Go to XM radio display is blank and no station

information is displayed troubleshooting.

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

9. Check that the navigation unit connectors and the

USB adapter unit connectors properly connected.

Go to step 10.

Connect the connectors, and recheck.

Terminal side of female terminals

Terminal side of male terminals

Is USB NO DAT A displayed?

Is the USB device wor king pr oper ly?

Is ther e continuity?

Ar e the system wor king pr oper ly on the navigation
scr een?

Is the connector s pr oper ly connected?

08/08/21 14:14:11 61SNR030_230_0241

＊３３

＊３４

＊３５

＊３６

＋

−

YES

23-239

USB ADAPTER UNIT CONNECTOR A (14P)

B (BLU)

USB ADAPTER UNIT CONNECTOR A (14P)

GND (BLK)

USB ADAPTER UNIT CONNECTOR A (14P)

SYS ACC (LT BLU)

NAVIGATION UNIT CONNECTOR E (14P)

SYS ACC (LT BLU)

10. Measure the voltage between body ground and

USB adapter unit connector A (14P) terminal No. 1.

Go to step 11.

Repair open in the wire between the

navigation unit and the USB adapter unit.

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

12. Measure the voltage between body ground and

USB adapter unit connector A (14P) terminal
No. 11.

Go to step 13.

Repair open or high resistance in the wire

between the navigation unit and the USB adapter
unit.

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

14. Measure the voltage between body ground and

USB adapter unit connector A (14P) terminal No. 2.

Go to step 16.

Go to step 15.

15. Measure the voltage between body ground and

navigation unit connector E (14P) terminal No. 2.

Repair open or short in the wire(s) between

the navigation unit and the USB adapter unit.

Substitute a known-good navigation unit

(see page 23-355), and recheck. If 10 V or more are
present, replace the original navigation unit.

Wire side of female terminals

Is ther e batter y voltage?

Is ther e less than 0.1 V ?

Is ther e 10 V or mor e pr esent?

08/08/21 14:14:11 61SNR030_230_0242

＊３７

＊３８

−

YES

Navigation

unit connector

USB adapter

unit connector

Wire color

YES

23-240

Audio System

NAVIGATION UNIT CONNECTOR E (14P)

SYS ACC (LT BLU)

NAVIGATION UNIT CONNECTOR E (14P)

USB ADAPTER UNIT CONNECTOR A (14P)

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

17. Measure the voltage between body ground and

navigation unit connector E (14P) terminal No. 2.

Substitute a known-good navigation unit

(see page 23-355), and recheck. If 10 V or more are
present, replace the original navigation unit.

Go to step 18.

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

19. Disconnect navigation unit connector E (14P) and

USB adapter unit connector A (14P).

20. Check for continuity between terminals of

navigation unit connector E (14P) and USB adapter
unit connector A (14P) according to the table.

BLU

E10

A10

PNK

Substitute a known-good USB adapter unit

(see page 23-258), then reconnect all of the
connectors and recheck. If the symptom/indication
goes away, replace the original USB adapter unit. If
the symptom/indication is still present, replace the
navigation unit (see page 23-355).

Open in the wire(s) between the navigation

unit and the USB adapter unit. Replace the affected
shielded harness.

Wire side of female terminals

Is ther e 10 V or mor e pr esent?

Is ther e continuity?

08/08/21 14:14:12 61SNR030_230_0243

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