PCM - Cruise Control System Check

NO: 08-01-96

GROUP: Electrical

DATE: Jan. 19, 1996

SUBJECT: Speed Control Light Flickers and/or Servo Clicks

MODELS: 1996 (BR) Ram Truck
1996 (AN) Dakota
1996 (AB) Ram Van/wagon
1996 (XJ) Cherokee

SYMPTOM/CONDITION:

The speed control indicator light, located on the speed control switch module, may flicker and/or a click may be heard from the speed control servo when the ignition key is turned to the RUN/START position and/or when the key is turned from RUN/START to OFF.

DISCUSSION:

The speed control indicator light is operated by the Powertrain Control Module (PCM). When the PCM is first powered-up by positioning the ignition key to the RUN/START position, the PCM performs a systems check. During the system check, the PCM momentarily provides power for the speed control indicator light, causing the light to illuminate. Also, the speed control servo is supplied with battery voltage at the same time. When the servo receives power, a click may also be noticed. This is due to the dump solenoid being energized momentarily. The PCM performs an additional systems check when the ignition switch is turned from RUN to OFF. The flickering of the light or the sound of the dump solenoid clicking will not have any adverse effects on the electrical system within the vehicle.

Please inform your customers that the flickering of the light and the click from the dump solenoid is due to a PCM systems check and is a normal operation of the system.

NOTE:
Do not replace the clockspring or any other components directly or indirectly related to the speed control system for this condition.

POLICY: Information Only