Acura RL. Instruction — page 199

1. Test the audio remote switch (see AUDIO REMOTE SWITCH TEST ).

Is the audio remote switch OK ?

YES — Intermittent failure, the audio remote switch and audio unit are OK at this time.

NO — Go to step 2.

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

3. Turn on the audio unit and check the audio unit operation (volume up, volume down, CH (UP), CH

(DOWN), MODE).

Is the audio unit operation OK?

YES — Operation is normal.

NO — Go to step 4.

4. Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

5. Disconnect the audio unit connector A (20P).

6. Reconnect the audio remote switch, and measure the resistance between audio unit connector A (20P)

No. 3 and No. 11 terminals as specified in the table.

Fig. 78: Measuring Resistance Between Audio Unit Connector A (20P) No. 3 And No. 11
Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

AUDIO REMOTE SWITCH TABLE

AUDIO REMOTE SWITCH CHART

Check the vehicle battery condition first.

Always check the connectors for poor connections or loose terminals.

NOTE:

Eject all the CDs before removing the audio unit and CD changer to
prevent damaging the CD player’s load mechanism.

Button held

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Is the resistance OK?

YES — Go to step 7.

NO — Repair open or high resistance in the circuit between the audio unit and the audio remote switch.
If the wires are OK, replace the cable reel (see CABLE REEL REPLACEMENT ).

7. Check for continuity between body ground and the No. 3 and No. 11 terminals of audio unit connector

A(20P) individually.

Fig. 79: Checking Continuity Between Body Ground And No. 3, 11 Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair the short to body ground in the circuit between the audio unit and the audio remote
switch. If the wires are OK, replace the cable reel (see CABLE REEL REPLACEMENT ).

NO — Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

ERROR CODE: XM NO SIGNAL IS DISPLAYED

[ ] : without AcuraLink

1. Park vehicle outside with a clear view of the southern horizon.

Does the XM radio receive a signal?

down

VOL DOWN

VOL UP

CH(-)

CH(+)

MODE

(NONE)

Resistance

about 100

ohms

about 357

ohms

about 775

ohms

about 1.7

kohms

about 3.7

kohms

10

kohms

NOTE:

Check the vehicle battery condition first.

Always check the connectors for poor connection or loose terminals.

Check XM radio reception in an open area with good exposure to the
southern horizon. Poor reception/interference can be caused by tall
buildings, mountains, or high-voltage power lines.

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YES — Reception interference operation is normal.

NO — Go to step 2.

2. Check the XM antenna connector C(2P) [or B UP)] at AcuraLink control unit (XM receiver) [or XM

receiver] and terrestrial and satellite antenna module.

Is the XM antenna connector C (2P) [or B(1P)] connected?

YES — Go to step 3.

NO — Reconnect the XM antenna receiver connector, recheck XM radio operation. If the signal is
restored, the system is OK. If signal not restored go to step 3.

3. Substitute a known-good XM antenna.

Does the XM radio receive a signal?

YES — Replace XM antenna.

NO — Substitute a known-good XM antenna lead. If the XM radio receives a normal signal, replace
original XM antenna lead.

ERROR CODE: XM ANTENNA IS DISPLAYED

[] : without AcuraLink

1. Check the connector at the AcuraLink control unit (XM receiver) [or XM receiver].

Is the connector connected?

YES — Go to step 2

NO — Reconnect the connector(s). If the error message does not go away, go to step 2.

2. Check the connector at the XM terrestrial and satellite antenna module (GPS antenna).

Is the connector connected?

YES — Go to step 3.

NO — Reconnect the connector(s). If the error message does not go away, go to step 3.

3. Check the pin locations in the AcuraLink control unit (XM receiver) [or XM receiver] connector and

NOTE:

Check the vehicle battery condition first.

Always check the connectors for poor connection or loose terminals.

If you replace the AcuraLink control unit (XM receiver), the AcuraLink
must be reactivated by Acura Client Services.

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the XM antenna module connectors.

Are the pins in the correct locations?

YES — Go to step 4.

NO — Correct the pin locations. If the error message does not go away, go to step 4.

4. Substitute a known-good XM terrestrial and satellite antenna module.

Is the error message gone?

YES — Replace the XM terrestrial and satellite antenna module.

NO — Go to step 5.

5. Substitute a known-good AcuraLink control unit (XM receiver) [or XM receiver].

Is the error message gone?

YES — Update the AcuraLink control unit if it does not have the latest software, then recheck. If the
software is the latest, replace the AcuraLink control unit (see ACURALINK CONTROL UNIT
(XM RECEIVER) REMOVAL/INSTALLATION
) [or XM receiver].

NO — Replace the XM antenna lead.

BOOMING SOUND WHILE DRIVING WITH AUDIO UNIT ON OR OFF

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

2. Operate the audio unit, and check the function of the speakers.

Is a booming sound heard from the speakers?

YES — Go to step 3.

NO — Go to no sound is heard from speaker(s) (see NO SOUND IS HEARD FROM SPEAKER(S)
(DISPLAY IS NORMAL)
).

3. Open the driver’s door, with the booming sound present.

Is the booming sound still present?

YES — Perform the electrical noise test (see ELECTRICAL NOISE TEST ).

NO — Go to step 4.

4. Turn the audio power switch to LOCK (0).

NOTE:

Always check the connectors for poor connections or loose terminals.

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