Test SC-7B - Checking Speed Control Operation
WARNING: This page is about a different variant/trim than selected.
NOTE:
Perform TEST SC-7A before proceeding.
- Disconnect speed control relay. Speed control relay is located in right rear corner of engine compartment. Brake lights must be operational to proceed. Go to next step.
- Using an external ohmmeter, check resistance of speed control relay output circuit Dark Blue/White wire between speed control relay connector and speed control servo connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open speed control relay output circuit. Perform TEST SC-VER.
- Using scan tool in voltmeter mode, check voltage of speed control sense circuit Red/Black wire at speed control relay connector. If voltage is more than 9 volts, go to next step. If voltage is 9 volts or less, repair open speed control relay sense circuit to speed control ON/OFF switch. Perform TEST SC-VER.
- Disconnect brake switch connector. Brake switch connector is located near top of brake pedal. Using scan tool in voltmeter mode, check voltage of speed control relay control circuit Dark Green wire at speed control relay connector. If voltage is more than 9 volts, repair short to battery voltage on speed control relay control circuit. Perform TEST SC-VER. If voltage is 9 volts or less, replace brake switch. Perform TEST SC-VER.