XM radio preset memory is lost (without navigation)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
Check the connectors for poor connections or loose terminals.
If you can only tune to channel 000, 001, 174, and 247, make sure the unit is set to channel mode (see owner's manual), if it is set to channel mode, call XM radio client support, and check the account activation status.

Turn the ignition switch to ON (II).
Turn on the audio system, and set each of the XM radio channel preset buttons.
Do each of the XM radio channel preset buttons set properly?

YES -Go to step 3.

NO -Go to step 5.
Turn the ignition switch to LOCK (0) for 1 minute, and then back to ON (II).
Test all of the XM radio channel preset buttons for proper recall operation.
Do the preset buttons recall the set radio stations?

YES -Intermittent failure, the system is normal at this time. Check connections at the audio unit.

NO -Go to step 5.
Turn the ignition switch to LOCK (0).
Measure the voltage between XM receiver connector A (14P) terminal No. 1 and body ground.

Fig 1: Measuring Voltage Between Connector A (14P) Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 7.

NO -Repair an open in the wire between the No. 5 (10 A) fuse in the under-dash fuse/relay box and XM receiver connector A (14P) terminal No. 1.
Turn the ignition switch to ON (II).
Measure the voltage between XM receiver connector A (14P) terminal No. 11 and body ground.

Fig 2: Measuring Voltage Between Connector A (14P) Terminal No. 11 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.2 V?

YES -Go to step 9.

NO -Repair an open or high resistance in the wire between XM receiver connector A (14P) terminal No. 11 and body ground (G606) (see CONNECTOR TO FUSE/RELAY BOX INDEX ).
Turn the ignition switch to LOCK (0).
Disconnect audio unit connector D (14P) and XM receiver connector A (14P).
Check for continuity between XM receiver connector A (14P) terminal No. 2 and body ground.

Fig 3: Checking Continuity Between Connector A (14P) Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between the audio unit and the XM receiver.

NO -Go to step 12.
Check for continuity between audio unit connector D (14P) terminal No. 2 and XM receiver connector A (14P) terminal No. 2.

Fig 4: Checking Continuity Between Connector D (14P) Terminal No. 2 And Connector A (14P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good XM receiver (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original XM receiver (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Repair an open in the wire between the audio-navigation unit and the XM receiver.