Cruise Control Servo: Testing and Inspection

Checking cruise control actuator's multiple plug

NOTE: To inspect the multiple plug of the cruise control actuator, the rear heater blower must be removed for better accessibility. The ignition remains switched off.





1. Separate plug connection in engine compartment.
2. Connect measuring instrument (ohmmeter) to terminal 1 and terminal 7 of the plug section of the actuator (motor resistance).
Display = 3 to 15 Ohms
3. Connect measuring instrument to terminal 2 and terminal 4 (potentiometer +).
Display = 2 to 4 k Ohms
4. Connect measuring instrument to terminal 2 and terminal 3 (potentiometer slide).
Display = 2 to 4 k Ohms
5. Connect measuring instrument to terminal 5 and terminal 6 (clutch actuator).
Display = 30 to 40 Ohms

If the measurements show no fault, the wire harness to the cruise control's control unit must be checked.
If required, replace the control unit.

NOTE:
Observe the following when removing the cruise control actuator:
- Up to model year 1995, the left-hand intake distributor must be removed.
- As of model year 1996, the entire Varioram intake system must be removed.