Acura RL. Instruction — page 193

Fig. 50: Identifying Acuralink Control Unit (XM Receiver) Connector A (20P) And Audio Unit
Connector C (14P) Wire Side Of Female Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Substitute a known-good AcuraLink control unit (XM receiver), then reconnect all connectors
and recheck. If the symptom/indication goes away, 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 ). If
symptom/indication is still present, replace the audio unit (see AUDIO UNIT
REMOVAL/INSTALLATION
).

NO — Repair open in the wire between audio unit and AcuraLink control unit (XM receiver).

7. Disconnect audio unit connector C (14P) and the XM receiver connector A (14P).

8. Check for continuity between XM receiver connector C (14P) and body ground according to the table.

Then check for continuity between the same terminals listed in the table and audio unit connector C
(14P) No. 4 terminal (the harness shield).

AUDIO UNIT CONNECTOR SPECIFICATIONS

Audio unit connector AcuraLink control unit (XM receiver) connector Wire color

C6

A9

WHT

C14

A19

RED

C5

A10

GRN

C13

A20

BLK

Audio unit connector Wire color

C6

WHT

C14

RED

C5

GRN

C13

BLK

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:07 PM

Page 50

© 2005 Mitchell Repair Information Company, LLC.

Fig. 51: Identifying XM Receiver Connector C (14P) Wire Side Of Female Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between the audio unit and the XM receiver or short between the
shield wire (replace the appropriate shielded harness).

NO — Go to step 9.

9. Check for continuity between XM receiver connector A (14P) and audio unit connector C (14P)

according to the table.

AUDIO UNIT CONNECTOR SPECIFICATIONS

Fig. 52: Identifying XM Receiver Connector A (14P) And Audio Unit Connector C (14P) Wire
Side Of Female Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Substitute a known-good XM receiver, then reconnect all connectors and recheck. If the
symptom/indication goes away, replace the original XM receiver. If symptom/indication is still
present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

NO — Repair open in the wire between audio unit and XM receiver.

XM RADIO DISPLAY IS BLANK AND NO STATION INFORMATION IS DISPLAYED (WITH

Audio unit connector XM receiver connector Wire color

C6

A6

WHT

C14

A14

RED

C5

A5

GRN

C13

A13

BLK

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:07 PM

Page 51

© 2005 Mitchell Repair Information Company, LLC.

ACURALINK)

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

2. Disconnect AcuraLink control unit (XM receiver) connector A (20P).

3. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 1 terminal

and body ground.

Fig. 53: Measuring Voltage Between Acuralink Control Unit (XM Receiver) Connector A (20P)
No. 1 Terminal And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 4.

NO — Repair open in the wire between fuse No. 5 (7.5A) in the driver’s under-dash fuse/relay box and
XM receiver connector A (20P) No. 1 terminal.

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

5. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal

and body ground.

Fig. 54: Measuring Voltage Between Acuralink Control Unit (XM Receiver) Connector A (20P)
No. 2 Terminal And Body Ground

NOTE:

Always check the connectors for poor connections or loose terminals.

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

Check the vehicle battery condition first.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:07 PM

Page 52

© 2005 Mitchell Repair Information Company, LLC.

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 6.

NO — Repair open in the wire between fuse No. 32 (10A) in the driver’s under-dash fuse/relay box and
AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal.

6. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 12

terminal and body ground.

Fig. 55: Measuring Voltage Between Acuralink Control Unit (XM Receiver) Connector A (20P)
No. 12 Terminal And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 7.

NO — Repair open in the wire between fuse No. 21 (10A) in the driver’s under-dash fuse/relay box and
AcuraLink control unit (XM receiver) connector A (20P) No. 12 terminal.

7. Reconnect the AcuraLink control unit (XM receiver) connector A (20P).

8. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 11

terminal and body ground.

Fig. 56: Measuring Voltage Between Acuralink Control Unit (XM Receiver) Connector A (20P)
No. 11 Terminal And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.1 V?

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:07 PM

Page 53

© 2005 Mitchell Repair Information Company, LLC.

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