Throttle Switch Check

Idle Switch Contact
1. With ignition Off, disconnect multiple pin plug from ECU.
2. Connect suitable ohmmeter across ECU connector terminals 3 and 5.
3. With throttle closed, resistance value should be 0 ohms.
4. With throttle opened, resistance value should be infinite. Switch over from throttle closed to throttle open should take place with a throttle gap of approximately 1°.

Full Load Contact
1. Connect ohmmeter across ECU connector terminals 5 and 12.
2. With throttle closed, resistance value should be infinite.
3. With throttle in full load position, resistance value should be 0 ohms. Switch over from throttle closed to full load position, should take place at approximately 3/4 total throttle travel.
4. If test results are not as specified, check resistance values directly at switch.