Test D: Dynamic Pull Occurs/Speed Control Inoperative (Flash Code 1)
NOTE:
After completing any repairs, perform self-diagnostics. See SELF-DIAGNOSTIC SYSTEM .
NOTE:
Perform all voltage and resistance tests using an Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
- Test drive vehicle and observe speedometer operation. If speedometer operates properly, go to next step. If speedometer does not operate properly, repair speedometer as necessary. See appropriate ANALOG INSTRUMENT PANELS - SABLE & TAURUS article. After repair, test system for normal operation.
- Turn ignition switch to LOCK position. Disconnect speed control servo/actuator 10-pin harness connector C122, located on left side of engine compartment. See Figure. Also disconnect Powertrain Control Module (PCM) 104-pin harness connector C175, located in right rear side of engine compartment. See Figure. Measure resistance between speed control servo/actuator harness connector C122 terminal No. 3 and PCM harness connector C175 terminal No. 68 (Gray/Black wire). See Figure and Fig 1 . See WIRING DIAGRAMS . If resistance is 5 ohms or less, replace speed control servo/actuator. See SPEED CONTROL SERVO/ACTUATOR under REMOVAL & INSTALLATION. If resistance is greater than 5 ohms, repair open circuit in Gray/Black wire between speed control servo/actuator and PCM. After repair, test system for normal operation.