EXPERTEC TSB (90-T-66)
Publication date: 1990-02-06Reference number: 90-T-66
EXPERTEC TSB
TECHNICAL SERVICE BULLETIN
SERVICE MANUAL UPDATE SEC. 8A CELL 81 VEHICLE SPEED INPUT
Model(s): 1988-90 CUTLASS SUPREME
Bulletin No.: 90-T-66
Date: 02/06/1990
BULLETIN ILLUSTRATION LIST
CELL 81 VEHICLE SPEED INPUT-SHORT CIRCUIT
The following pages (8A-81-34 and 8A-81-35) are replacement pages for the 1988 Cutlass Supreme Service Manual.
Please update your Manuals.
CODE 1009 VEHICLE SPEED INPUT-SHORT CIRCUIT
Code 1009 will set if the Ignition is in RUN and the serial data link speed is 5 MPH or greater than the vehicle speed input for 5 seconds and the Vehicle Speed Input at the Electronic Instrument Cluster is LO.
TEST EXPLANATIONS
The circled numbers refer to the test procedures in the trouble tree.
- This step checks if a short to ground exists in CKT 389 or the Electronic Instrument Cluster is at fault.
- This step determines if the short exists in the Cruise Control Module.
- This step determines if the short exists in the Chime Module.
- This step determines if the short exists in the Electronic Control Module or in CKT 389.
CODE 1009 VEHICLE SPEED INPUT-SHORT CIRCUIT
Code 1009 will set if the Ignition is in RUN and the serial data link speed is 5 MPH or greater than the vehicle speed input for 5 seconds and the Vehicle Speed Input at the Electronic Instrument Cluster is LO.
TEST EXPLANATIONS
The circled numbers refer to the test procedures in the trouble tree.
- This step checks if a short to ground exists in CKT 389 or the Electronic Instrument Cluster is at fault.
- This step determines if the short exists in the Passive Restraint Control Module, Cruise Control Module, HUD Unit, Chime Module or Driver Information Center.
- This step determines if the short exists in the Electronic Control Module or in CKT 389.