Knock Sensor - System Changes & Enhanced Test Charts

Bulletin Number:
93-6-21
Reference Number:
216523
Publish Date:
1/93



Subject:
SERVICE MANUAL UPDATE - SECTION 6E DTC 43, CHART C-5 AND OBD SYSTEM CHECK

Models
Affected:
1993 GRAND AM MODELS WITH 2.3L ENGINES


This bulletin updates Section 6E3 of the 1993 Grand Am models with the 2.3L (VIN D, A and 3) Engine. The updated pages represent engineering changes in the Knock Sensor (KS) System. Included with these pages are enhanced diagnostic charts. The pages are as follows:

1993 Grand Am Models





On-board Diagnostic (OBD) System Check, Tech 1 Data






DTC 43 Knock Sensor (KS) Circuit Facing Page





DTC 43 Knock Sensor (KS) Circuit Chart





Chart C-5 Knock Sensor (KS) System Check Facing Page





Chart C-5 Knock Sensor (KS) System Check

Please update your service manuals accordingly.