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TEST ACTION APPLICABILITY 10 Turn the ignition on. t read DTC’s. Are any Vehicle Speed Signal codes set? All Yes → No → 11 Turn the ignition on. t in Inputs/Outputs, read the Speed Control Coast Switch state. While observing the display, press the Coast Switch several times. t show the Coast Switch status change appropriately from Pressed to Released? All Yes → No → Replace the Right S/C Switch. 12 Turn the ignition off. t, read the Speed Control Switch Voltage. Did the DRBIII t show Speed Control Switch Voltage go from below 4.2 Volts to above 4.2 Volts? All Yes → Replace the Right Speed Control Switch. No → 13 Turn the ignition on. t read DTC’s. Are any Vehicle Speed Signal codes set? All Yes → No → 14 Start the engine. t, actuate the Speed Control Servo Solenoids. Does the Throttle open and close? All Yes → No → Perform Speed Control Vacuum Supply Test per appropriate 289 SPEED CONTROL *CHECKING SPEED CONTROL OPERATION WITH NO DTC’S PRESENT Continued |