CD Changer: Testing and Inspection

CD changer inoperative.
1. The CD changer receivers its power and ground through the radio via the DIN connector. Verify that the radio powers up and functions before proceeding.
2. With the radio turned ON, check the radio display when pushing the MODE/EJECT button to select the CD mode.
a. If the display shows "- - - -", then insert a CD magazine in the changer.
b. If the display shows "nocd", then insert a CD into the magazine.
c. If the display shows Err "xxxx", then check the error message table below.
d. If the radio only switches between AM and FM turning modes, then perform the following:
I. Check the connection of the DIN cable to the CD changer and radio.
II. If OK, then check the DIN cable at the CD changer side.
III. Make sure the DIN cable is connected to the radio and radio is turned ON and operating. Check for battery voltage at Pins 6 and 7 using Pin 8 for ground.
IV. If OK, then replace CD changer.

Din Cable Connector And Din Cable Pin-Outs:

V. If not OK, then remove DIN cable from radio and changer. Check DIN cable for continuity from connector to connector, using a ohmmeter on each Pin. If not OK, replace DIN cable.
VI. If the DIN cable OK, then replace the radio.