Ignition System - Revised Code 41/E041 Chart

9218oldsmobile04

NUMBER: 91-T-45

CORP.REF.NO: 016545, 016546, 016551

DATE: February 1991

SECTION: 6E3, 8D1


SUBJECT:
SERVICE MANUAL UPDATE - REVISED CODE 41/E041 CHART, FACING PAGE


MODELS/YEARS:
1988-91 TORONADO, NINETY-EIGHT, EIGHT-EIGHT - WITH 3800 (VIN C, L)

Code 41 Flow Chart, Type 1 Ignition System:

1991 Ninety-Eight pages 6E3-A-74 and 6E3-A-75.
1991 Toronado/Trofeo pages 6E3-A-74 and 6E3-A-75.

^ The Code 41 Diagnostic Chart in the "Driveability And Emissions" Section on page 6E3-A-75 for 1991 Ninety-Eight, Toronado and Trofeo models equipped with the 3800 (VIN L) engine. Seperate charts are included for "Type I" and "Type II" ignition systems. Be sure to use the correct chart for the system being diagnosed.

Cam Sensor Circuit:

Code 41 Flow Chart:

1988-89 Eighty-Eight/Ninety-Eight pages 6E3-A-68 and 6E3-A-69.
1990 Eight-Eight/Ninety-Eight and 1991 Eighty-Eight pages 6E3-A-70 and 6E3-A-71.

^ The code 41 Diagnostic Chart and Facing Page in the "Driveability And Emissions" Section 6E3 for 1988-91 Eighty-Eight and 1988-90 Ninety-Eight models equipped with the 3800 (VIN C) engine.

Code 41 Flow Chart:

1988 and 1990 Toronado/Trofeo pages 8D1-50 and 8D1-51.
1989 Toronado/Trofeo pages 8D1-52 and 8D1-53.

^ The Code E041 Diagnostic Chart and Facing Page in the "ECM Trouble Code Diagnosis"
Section 8D1 for 1988-90 Toronado and Trofeo models equipped with 3800 (VIN C) engine. Refer to bulletin page 5 for the chart and page 6 for the facing page.

This revised Service Manual information addresses the possibility of a faulty ignition module causing Code 41/EO41 to be set by not supplying the CAM sensor signal to the ECM/PCM.

Please note these corrections on the appropriate pages of the affected Service Manuals.