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Acura CSX. Manual - part 622

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−

YES

23-201

AUDIO UNIT CONNECTOR G (3P)

RF IN

AUDIO UNIT CONNECTOR G (3P)

RF IN

RF SH

AUDIO UNIT CONNECTOR G (3P)

AM/FM ANTENNA AMPLIFIER 3P CONNECTOR

RF SH

AUDIO UNIT CONNECTOR G (3P)

AM/FM ANTENNA AMPLIFIER 3P CONNECTOR

RF IN

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

20. Disconnect audio connector G (3P).

21. Check for continuity between audio unit connector

G (3P) terminal No. 1 and body ground.

Replace the antenna lead and/or sublead.

Go to step 22.

22. Check for continuity between audio unit connector

G (3P) terminals No. 1 and No. 2.

Replace the antenna lead and/or sublead.

Go to step 23.

23. Check for continuity between audio unit connector

G (3P) terminal No. 2 and the AM/FM antenna
amplifier 3P connector terminal No. 2.

Replace the antenna lead and/or sublead.

Go to step 24.

24. Check for continuity between audio unit connector

G (3P) terminal No. 1 and the AM/FM antenna
amplifier 3P connector terminal No. 1.

Replace the AM/FM antenna amplifier

(see page 23-263), and recheck. If the reception is
still poor, replace the audio unit (see page 23-256).

Replace the antenna lead and/or sublead.

Terminal side of female terminals

Is ther e continuity?

08/08/21 14:09:53 61SNR030_230_0204

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＋

−

Audio unit power switch will not turn on (No
information display and no sound)
(with navigation)

YES

23-202

Audio System

NAVIGATION UNIT CONNECTOR A (24P)

ACC RADIO
(PUR)

B BACK UP

(WHT)

NOTE:

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

terminals.

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

2. Push the power switch ON to see if the navigation

unit turns ON.

Intermittent failure, the system is OK at this

time.

Go to step 3.

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

4. Check the No. 23 (10 A) fuse in the under-hood

fuse/relay box and No. 35 (7.5 A) fuse in the under-
dash fuse/relay box.

Go to step 5.

Replace the fuse(s), and recheck.

5. Remove the navigation unit (see page 23-355).

Check that the navigation unit is properly
connected.

NOTE:

• Eject all the discs before removing the navigation

unit to prevent damaging the CD player’s load
mechanism.

• Remove the PC card before removing the

navigation unit.

Go to step 6.

Reconnect the connector, and recheck the

function.

6. Disconnect navigation unit connector A (24P)

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

8. Measure the voltage between body ground and

navigation unit connector A (24P) terminals No. 14
and No. 24 individually.

Go to step 9.

Repair open in the wire(s) between the No. 23

(10 A) fuse in the under-hood fuse/relay box and
the No. 35 (7.5 A) in the under-dash fuse/relay box
and the navigation unit.

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

10. Reconnect navigation unit connector A (24P).

Wire side of female terminals

Does the navigation unit display oper ate pr oper ly,
and does the audio sound nor mal?

Ar e the f uses OK ?

Is it connected pr oper ly?

Is ther e batter y voltage on both ter minals?

08/08/21 14:09:53 61SNR030_230_0205

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−

YES

Audio unit power switch will not turn on (No
information display and no sound)
(without navigation)

23-203

NAVIGATION UNIT CONNECTOR A (24P)

RADIO GND (BLK)

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

12. Measure the voltage between navigation unit

connector A (24P) terminal No. 12 and body ground.

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

Repair open in the wire between navigation

unit connector A (24P) terminal No. 12 and body
ground (G505) (see page 22-32).

NOTE:

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

terminals.

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

2. Push the power switch ON to see if audio unit turns

ON.

Intermittent failure, the system is OK at this

time.

Go to step 3.

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

4. Check the No. 23 (10 A) fuse in the under-hood

fuse/relay box and the No. 35 (7.5 A) fuse in the
under-dash fuse/relay box.

Go to step 5.

Replace the fuse(s), and recheck.

5. Remove the audio unit (see page 23-256). Check

that the audio unit is properly connected.

NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.

Go to step 6.

Reconnect the connector, and recheck the

function.

Wire side of female terminals

Is ther e less than 0.1 V on both ter minals?

Does the audio unit oper ate pr oper ly, and does the
audio sound nor mal?

Ar e the f uses OK ?

Is it connected pr oper ly?

08/08/21 14:09:53 61SNR030_230_0206

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＊３１

＋

−

YES

23-204

Audio System

AUDIO UNIT CONNECTOR A (17P)

B BACK UP

(WHT)

ACC RADIO (PUR)

AUDIO UNIT CONNECTOR A (17P)

RADIO GND (BLK)

6. Disconnect audio unit connector A (17P).

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

8. Measure the voltage between audio unit connector

A (17P) terminal No. 14 and body ground, and
between terminal No. 17 and body ground.

Go to step 9.

Repair open in the wire(s) between the No. 23

(10 A) fuse in the under-hood fuse/relay box and
No. 35 (7.5 A) in the under-dash fuse/relay box and
the audio unit.

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

10. Reconnect audio unit connector A (17P).

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

12. Measure the voltage between audio unit connector

A (17P) terminal No. 9 and body ground.

Replace the audio unit (see page 23-256).

Repair open in the wire between audio unit

connector A (17P) terminal No. 9 and body ground
(G505) (see page 22-38).

Wire side of female terminals

Is ther e batter y voltage on the both ter minals?

Is ther e less than 0.1 V ?

08/08/21 14:09:53 61SNR030_230_0207

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