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Home >> Mercury >> 2002 >> Sable LS Premium >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> System Tests >> Test F: Speed Control Switch Inoperative

Test F: Speed Control Switch Inoperative

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.

Turn ignition switch to LOCK position. Disconnect speed control servo/actuator harness connector, located on left side of engine compartment. See Figure. While pressing appropriate speed control switch, measure resistance between speed control servo/actuator harness connector C122 terminals No. 5 (Light Green wire) and No. 6 (Dark Green/Orange wire). See Figure. See WIRING DIAGRAMS . For resistance specifications, see SPEED CONTROL SWITCH RESISTANCE  table. If resistances are as specified, replace speed control servo/actuator. See SPEED CONTROL SERVO/ACTUATOR  under REMOVAL & INSTALLATION. If resistances are not as specified, replace speed control switch. See SPEED CONTROL SWITCHES  under REMOVAL & INSTALLATION. After repair, test system for normal operation.

SPEED CONTROL SWITCH RESISTANCE

Switch Position Ohms
Coast 108-132
Off Less Than 5
Resume 1980-2420
SET/ACCEL 612-748