Test SP-13A, Checking Cruise Control Servo Operation
- Disconnect and inspect 4-pin cruise control servo connector. If connector is not okay, repair connector as necessary. Perform VERIFICATION TEST SP-VER . If connector is okay, place DRB-II in ohmmeter mode. Probe terminal No. 1 (Black wire) at cruise control servo connector.
- If resistance is 10 ohms or more, repair open Black wire. Perform VERIFICATION TEST SP-VER . If resistance is less than 10 ohms, reconnect cruise control servo connector. Check if vehicle is equipped with a vacuum reservoir. If vehicle is equipped with vacuum reservoir, perform TEST SP-13B .
- If vehicle is not equipped with a vacuum reservoir, disconnect cruise control servo vacuum hose. Using an alternative source of constant vacuum supply, connect a vacuum supply hose to servo. Using DRB-II, actuate servo solenoids. If throttle fully opens and closes, perform TEST SP-14A .
- If throttle does not fully open and close, using DRB-II, stop actuation test. Inspect cruise control servo cable condition. If cruise control servo cable condition okay, replace cruise control servo. Perform VERIFICATION TEST SP-VER . If cruise control servo cable condition is not okay, repair cable as necessary. Perform VERIFICATION TEST SP-VER .