Chrysler Concorde/Intrepid/LHS/New Yorker/Vision 1993-1997

Vehicle Speed Sensor

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OPERATION



The vehicle speed sensor supplies the vehicle speed and distance inputs to the PCM. The speed sensor is located in the transaxle extension housing to sense vehicle motion.

The speed and distance signals, along with a closed throttle signal from the TPS, determine if a closed throttle deceleration or normal idle condition (vehicle stopped) exists. Under deceleration conditions, the PCM adjusts the idle air control motor to maintain a desired MAP value. Under idle conditions, the PCM adjusts the idle air control motor to maintain a desired engine speed.

TESTING



See Figures 1, 2 and 3



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Fig. Fig. 1: Wiring schematic for the vehicle speed sensor-1993-95 models



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Fig. Fig. 2: Wiring schematic for the vehicle speed sensor-1996-97 models



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Fig. Fig. 3: PCM and TCM pin terminal ID for the vehicle speed sensor

Before testing any electrical component, inspect the wiring and connectors for damage. Also wiggle the connectors to ensure a that they are firmly engaged.

  1. Unplug the vehicle speed sensor wiring connector.
  2.  
  3. Turn the ignition ON .
  4.  
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