ECM - Revised DTC E041 Diagnosis

9223buick03

Bulletin: 90-8-22

Date: Feb. '91

Ref. No.: 90-215-8

Corp. Ref. No.: 016551


SUBJECT:
SERVICE MANUAL UPDATE - SECTION 8D1 - REVISED ECM TROUBLE CODE E041 DIAGNOSTIC CHART AND FACING PAGE

MODELS AFFECTED:
1988-90 RIVIERA MODELS








This bulletin updates the Code E041 Diagnostic Chart and Facing Page in "ECM Trouble Code Diagnosis" Section BD1 for 1988-1990 Rivieras.

The revised chart addresses the possibility of a faulty ignition module causing Code E041 to be set by not supplying the CAM sensor signal to the ECM.