Engine Controls - Code 24 (VSS) Diagnostic Aid

9219oldsmobile03

NUMBER: 90-T-65

CORP.REF.NO: 016508

DATE: March 1990

SECTION: 6E1


SUBJECT:
SERVICE MANUAL UPDATE-SECTION 6E1 - DRIVEABILITY AND EMISSIONS (INFORMATION FOR COMPONENTS SETTING CODE 24)

MODELS/YEARS:
1988-90 CUSTOM CRUISER MODELS


This bulletin applies to Section 6E1 "Driveability And Emissions", of the 1988, 1989 and 1990 Custom Cruiser Service Manual.

This bulletin serves to improve diagnosing Code 24 (Vehicle Speed Sensor). If a Code 24 problem is still present after completion of the trouble code chart, then the following Diagnostic Aid should be checked.

Diagnostic Aid

The convenience center and reminder package (if equipped) or timer module should be disconnected and then note if the fault is resolved. A short in any of the previously mentioned modules or wire common with Circuit 437 can set a Code 24. Refer to the 8A Section, cell 33-0/77-3 for more information on this circuit and vehicle speed sensor.

Please note this in your service manuals.