Check OFF Switch Operation
Disconnect speed control servo/actuator connector C136 (located near master cylinder). While pressing OFF switch and rotating steering wheel, check resistance between speed control servo/actuator connector C136 terminals No. 5 and 6. See Figure . If resistance is less than 4 ohms, replace speed control servo/actuator and retest system operation. If resistance is 4 ohms or more, replace speed control switch assembly and retest system operation.