Chrysler WJ Speed Control System Service Manual

About this manual

The document provides a comprehensive guide to the electronically controlled and vacuum-operated speed control system found in Chrysler WJ models. It details the functions of key components including the Powertrain Control Module (PCM), servo cable, speed control servo, solenoid circuits, switches, stop lamp switch, and vacuum reservoir.

What's inside

• Description and Operation
• Diagnosis and Testing
• On-Board Diagnostic Test
• Road Test
• Removal and Installation
• Specifications

Frequently asked questions

What is the minimum speed required for the speed control system to operate?

The system is designed to operate at speeds above 30 mph.

What speed range must the vehicle be in to store a set speed?

You must depress the SET switch while the vehicle is moving at a speed between 35 and 85 mph.

What is the minimum vacuum reading required at idle during a supply test?

The vacuum gauge should read at least ten inches of mercury.