A/C - Intermittent Operation or Blown Number 7 Fuse

89pontiac25

Bulletin Number: 89-1-1A
Reference Number: 878109R
Publish Date: 12/89
Subject: INTERMITTENT A/C OPERATION OR BLOWN NUMBER 7 FUSE

Models

Affected: 1989 BONNEVILLE
This bulletin has been revised to correct the volt common clamping diode information in the last sentence of the bulletin. This bulletin cancels and replaces bulletin 89-1-1 issued 9/88.

Pull to seat connectors are now used at the A/C compressor clutch location on 1989 Bonneville models. Because of this change, the compressor clutch diode has been relocated about 14 inches away and into the wire harness. Under certain conditions, the diode legs can short to the harness and cause a condition of intermittent A/C operation or blows the A/C fuse located in the number 7 position of the fuse panel.

Diagnosis of this condition will require the removal of the generator to access the diode in its new location. The diode should be inspected after removal of the heat shrink material protecting it. Generally, a properly operating diode can be reinsulated and returned to the harness conduit to repair this intermittent condition. Inoperative diodes should be replaced using a 1 amp, 400 volt common clamping diode.

Warranty Information

Labor Operation: N6030
Labor Time .5 hour