DeVille V8-4.6L VIN 9 (1995)
Electronic Brake Control Module: All Technical Service Bulletins
ABS - Antilock Indicator ON with No DTC Set
FILE IN SECTION: 5 - Brakes
BULLETIN NO.: 53-50-12
DATE: June, 1995
SUBJECT:
Anti-Lock Indicator "On" with No DTC Set (Replace EBTCM or Repair EBTCM Connector)
MODELS:
1995 Cadillac Concours, DeVille, Eldorado, Seville
CONDITION
Some owners may comment that the anti-lock indicator turns "On" intermittently. "No Traction Control" Diagnostic Trouble Codes (DTC's) may be set.
CAUSE
The harness connector of the Electronic Brake and Traction Control Module (EBTCM) has a shorting bar. This bar grounds the anti-lock indicator
circuit whenever the harness is disconnected from the EBTCM. A grounded shorting bar causes the anti-lock indicator to turn "On", informing the driver
that the ABS is disabled.
Important:
The shorting bar is an essential safety feature that should NOT be modified in any manner.
The following conditions may cause the EBTCM shorting bar to short to ground when the connector appears to be secure.
1. A loose or poorly seated EBTCM harness connector may cause this condition. (Improper seating of the harness connector to the EBTCM may
damage connector terminals).
2. There is a plastic "boss" or "finger" molded into the header connector of the EBTCM that inserts into the shorting bar when the connector is
properly seated. It prevents the shorting bar from shorting. The condition described in this bulletin may occur if this plastic boss is:
^
Broken, or
^
Moved to one side of the shorting bar (as opposed to being inserted in the clip).
CORRECTION
