Electrical System - Revised Diagnostic Information

9223buick03

Builetin: 90-8-17

Date: Dec. '90

Ref. No.: 90-207-8

Corp. Ref. No.: 008133


SUBJECT:
SERVICE MANUAL UPDATE - SECTION 8A - ELECTRICAL DIAGNOSTIC REVISIONS

MODELS AFFECTED:
1990 REGAL MODELS


This bulletin provides late production and revised information to supplement Section 8A.

The Update Change Sumary follows the Service Manual Index. The Summaries show the minor wiring changes since publication of the final edition of the 1990 Service Manual.

All changes are labeled with a late production or revised note to help identify the type of revision.

Multi-Use Index allows the user to reference the Section 8A Supplement or 1990 Service Manual.

Please update your Service Manual accordingly.








Index





Introduction to Update Summary
Contents Page


























Update Change Summary








Coolant Fan Wiring Diagram

















Coolant Fan Diagnosis





Coolant Fan Operation





Harness Connector at Fuse Panel