Cam Sensor Circuit - Code 41 Manual Update

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Bulletin:
91-6E-13

Date:
March, '91

Ref. No.:
91-134-6E

Corp. Ref. No.:
016545


SUBJECT:
SERVICE MANUAL UPDATE-SECTION 6E3-DRIVEABILITY AND EMISSIONS
REVISED CODE 41 DIAGNOSTIC CHART

MODELS AFFECTED:
1991 PARK AVENUE, RIVIERA AND REATTA MODELS
EQUIPPED WITH 3800 (VIN L) ENGINE








This bulletin updates the Code 41 Diagnostic Chart in "Driveability And Emissions" Section 6E3 for 1991 Park Avenue and Riviera/Reatta models equipped with the 3800 (VIN L) engine. The revised chart addresses the possibility of a faulty ignition module causing Code 41 to be set by not supplying the CAM Sensor signal to the PCM. Separate charts are included with this bulletin for "Type I" and "Type II" ignition modules. To ensure proper diagnosis and to avoid replacement of good parts, the type of system being diagnosed must be identified and the correct chart for the applicable system used.