Heres some neat stuff some of which is
NOT in the
owners manual:
Radio Diagnostics:
Speaker Test:
While in AM/FM mode, simultaneously press 3 & 6. This begins a speaker test - each individual speaker will sound while the speaker name is displayed.
Signal Strength Test:
While in AM/FM mode begin the speaker test by simultaneously pressing 3 and 6 then interrupt the speaker test by pressing button 3 by itself. The signal strength for the station being played will display. Two identical cars in close proximity should yield very close to the same reading. If one
radio experiences a much lower signal strength than the other, and has been experiencing poor
radio reception, it should be brought to the attention of a dealer.
Speed Sensitive Volume Control:
While listening to AM/FM press the round
radio knob for five seconds then select (SEL) a number from 0 to 7. The higher the number the more the volume will increase at any given speed.
Radio Self Test:
While listening to AM/FM press 3 & 6 to begin the speaker test, interrupt this test by pressing #1. The
radio will go into SELF TEST mode but (all 2002s at least) will FAIL with error codes most of which are not applicable to the six
CD changer. Sorry, I don’t know if the 03s or 04s pass this SELF TEST or yield extraneous error codes.
Viewing Error Codes:
To view the error codes after the SELF TEST is finished press DISC/TUNE. It appears only error code B1342, B2404, and B2477 apply to this specific
radio system. Refer to the
shop manual for error code explanations or ask here.