Servo Unit Locking Coil Test

Refer to "Speed Control Wiring Diagrams". Prior to performing any tests, ensure servo or valve body and electronic module are properly tested.

Fig. 2 Speed control wiring diagram. 1980-84 Vans, Wagons & Front Sections:

Fig. 3 Speed control wiring diagram. 1981-84 Ramcharger, Trail Duster & Conventional Cabs:

Fig. 4 Speed control wiring diagram. 1982-84 Rampage & 1983 Scamp:

Fig. 7 Speed control wiring diagram. 1985 rear wheel drive Ram Van & Wagons:

1980-82 Models

1. Turn ignition to "Accessory" or "On" position, then move slide switch to "On" position.
2. Momentarily disconnect and connect the double connector at servo terminals. Servo should click on and off. Replace servo if no clicking sound is heard.