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Home >> American Motors >> 1985 >> Encore Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System (AMC) - TBI >> Testing >> Wide Open Throttle (Wot) Switch
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Wide Open Throttle (Wot) Switch

  1. Disconnect the wiring harness from the WOT switch and test resistance while opening and closing switch manually. When switch is closed, resistance should be infinite. A low resistance should be indicated at the wide open position. Test switch operation several times. Replace switch if defective. Reconnect wiring harness.
  2. With ignition switch ON, test for WOT switch voltage between pin 6 and pin 7 (ground) of diagnostic connector D2. Voltage should be 0 with switch in wide open position and greater than 2 volts in any other position.
  3. If voltage is always zero, test for short circuit to ground in the wiring harness or switch. Check for open circuit between pin 19 of ECU connector J2 and the switch connector. Repair or replace as needed.
  4. If voltage is always greater than 2 volts, test for an open wire or connector between the switch and ground. Repair as needed.
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