Audio System - Intermittent Loss of Audio
NUMBER: 08-014-04GROUP: Electrical
DATE: March 30, 2004
SUBJECT:
Radio Intermittent Audio
OVERVIEW:
This bulletin involves applying a label over slots in the radio top cover.
MODELS
NOTE:
This bulletin applies to vehicles equipped with an AM/FM/Cassette Radio (sales code RBB, p/n's 05091555AG & 05091555AH, built prior to Jan. 30, 2004, date code 0304), or AM/FM/CD Radio (sales code RBK, p/n's 05091556AG & 05091556AH, built prior to Jan. 30, 2004, date code 0304). Those RBB and RBK radios build after 1/30/04 will no longer have vent holes in the area the repair procedure covers.
SYMPTOM/CONDITION:
Audio drops out when vehicle is moved from cold to warm or humid environment. Condensation builds up across the audio amplifier circuitry causing amplifier to shut down. Typically, cycling ignition switch Off and back On will restore the audio output.
DIAGNOSIS:
If the vehicle operator describes the Symptom/Condition above, perform the Repair Procedure.
PARTS REQUIRED
REPAIR PROCEDURE:
1. Remove radio from Instrument panel. Wiring connectors can remain connected.
2. Place 3M Vinyl Plastic Electrical Tape Super 33+ or Equivalent over the row of slots on the left hand side of the radio top cover, be sure to not cover information (barcode, etc.) on the radio's primary label (Fig. 1). Be sure the slots are covered completely and the tape is sealed all around the edges. Also cover and seal with tape, the two slots between the heat sink and the row of covered slots.
NOTE:
The two slots between the heat sink and the row of covered slots (1) also need to be completely covered and sealed with tape.
3. Replace radio in Instrument panel.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
FAILURE CODE
Disclaimer
This bulletin is supplied as technical information only and is not an authorization for repair.