Cruise Control Communication Circuit: 3.2TL
- Drive vehicle at speed over 25 MPH. Activate and set cruise control. If cruise control operates, go to next step. If cruise control does not operate, check cruise control unit or cruise control actuator. See CRUISE CONTROL UNIT INPUT under SYSTEM TESTS. See CRUISE CONTROL ACTUATOR ASSEMBLY under COMPONENT TESTS.
- Backprobing, measure voltage between ground and cruise control unit 14-pin connector terminal No. 8 (Blue/Green wire). See Fig 1. If about one volt exists, go to next step. If about one volt does not exist, replace cruise control unit.
- Backprobing, measure voltage between ground and PCM 32-pin connector "A" terminal No. 5 (Blue/Green wire). See Fig 2. PCM is located below right center of instrument panel, behind carpet. If about one volt exists, check for loose PCM 32-pin connector "A". If connector is okay, substitute a known-good PCM and recheck. See PCM in appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE. If symptom goes away, replace original PCM. If about one volt does not exist, repair short or open in Blue/Green wire between PCM 32-pin connector "A" and cruise control unit connector.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Courtesy of AMERICAN HONDA MOTOR CO., INC.