ABS - Warning Lamp ON

NO.: 05-10-93 Rev. A

GROUP: Brakes

DATE: Jul. 16, 1993

SUBJECT:
ABS (Anti-Lock Brake System)
Intermittent Wheel Speed Sensor Open Circuit

NOTE:
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 05-10-93 WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS**

MODELS:

1993 (AS) Caravan/Grand Caravan/Caravan CV
Voyager/Grand Voyager/Town & Country

NOTE:
THIS BULLETIN APPLIES TO VEHICLES WITH BUILD DATES BETWEEN 2/15/93 AND 5/6/93 (MDH 0215XX - 0506XX)

SYMPTOM/CONDITION:

The yellow ABS warning lamp comes on while driving and stays on until the ignition switch is turned off. The yellow ABS warning lamp most likely will not stay on past the bulb test cycle when the vehicle is restarted. An intermittent open in a wheel speed sensor circuit could be the cause, if so, a fault will be stored in the CAB (Control Anti-lock Brakes).

DIAGNOSIS:





Connect the Scan Tool (DRBII) or the Mopar Diagnostic System (MDS) to the Chrysler Collision Detection (CCD) data link connector located at the lower left side of the instrument panel and check for stored fault codes for the ABS. If a wheel speed sensor fault exists, inspect that wheel speed sensor's connector for the molded on identification number "BNA-2". Refer to the illustration.

If the identification number molded on the connector is "BNA-2", perform the repair procedure.

If the identification number molded on the connector is NOT "BNA-2", perform the appropriate wheel speed sensor diagnostic test procedure outlined in the 1993 Chassis Bendix Anti-lock - 10 Brake System Diagnostic Procedure Manual (Publication No. 81-699-0322) or the Mopar Diagnostic System (MDS).





PARTS REQUIRED:

REPAIR PROCEDURE:

This bulletin involves replacing ** all ** ABS wheel speed sensors with identification number "BNA-2" molded oh the side of the wiring connector.

1. ** Inspect the remaining ABS wheel speed sensors for identification number "BNA-2" molded on the side of the wiring connector. **

2. Using the procedures outlined on pages 5-95, 5-96 and 5-97 of the 1993 Front Wheel Drive/All Wheel Drive Service Manual (Publication Number 81-370-3105), replace ** all of the ABS wheel speed sensors on the vehicle that have the identification number "BNA-2" molded on the side of the wiring connector. **

POLICY:
Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:
Labor Operation No.

08-14-18-94 Inspect All Four Sensors 0.6 Hrs.

08-14-18-95 Replace One Or Both Front Sensors 0.2 hrs.

08-14-18-96 Replace One Or Both Rear Sensors 0.4 hrs.

FAILURE CODE: 18 - Circuit Open