CONNECTOR IDENTIFICATION
| Connector | Go to Figure |
|---|---|
| Brakelight Switch | (Scheme 1) |
| Clockspring | (Scheme 2) |
| Cruise Control Relay | (Scheme 3) |
| Cruise Control Servo | (Scheme 4) |
| Cruise Control Switch | (Scheme 5) |
| Distance Sensor | (Scheme 6) |
| Single Board Engine Controller (SBEC) | (Scheme 7) |
CONNECTOR IDENTIFICATION DIRECTORY
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
TEST SP-13A: CHECKING CRUISE CONTROL SERVO OPERATION
- Disconnect and inspect 4-pin cruise control servo connector. If connector is not okay, repair as necessary. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) . 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 «TEST SP-VER»(ref-27781-S15131197682001010800000) . 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, stop actuation test using DRB-II. Inspect cruise control servo cable condition. If cruise control servo cable okay, replace cruise control servo. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) . If cruise control servo cable is not okay, repair cable as necessary. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) .
TEST SP-13B: CHECKING CRUISE CONTROL OPERATION
- Start engine. Turn engine off. Turn ignition switch to ON position. Using DRB-II, actuate servo solenoids. If throttle fully opens and closes, perform «TEST SP-14A»(ref-27781-S30344649212001010800000) . If throttle does not fully open and close, stop actuation test using DRB-II.
- Disconnect vacuum hose at cruise control servo. 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, repair vacuum leak or restriction between servo and vacuum source. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) .
- 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 is okay, replace cruise control servo. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) . If cruise control servo cable is not okay, repair cable as necessary. Perform «TEST SP-VER»(ref-27781-S15131197682001010800000) .
DESCRIPTION
| WARNING | On vehicles equipped with air bag restraint system, use extreme caution when servicing to avoid personal injury and vehicle damage. See the AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIP section before servicing steering wheel or column. |
The cruise control system is electronically controlled and vacuum operated. The electronic control is integrated into the Single Board Engine Controller (SBEC). System consists of SBEC, servo, cruise control switch panel, vacuum reservoir, distance (speed) sensor, brakelight switch and park/neutral switch (A/T models). System controls are located on the steering wheel and consist of on/off, resume/accel, and set/decel or set/coast buttons.
See also:
• COMMONLY USED ABBREVIATIONS