Throttle Position Sensor (TPS) & Idle Switch

Faults in TPS circuit may set Code 43. To test system, see CODE 43 diagnostic procedures in TESTS W/CODES article.

1) To test TPS, disconnect TPS connector. TPS is mounted on side of throttle body. While opening and closing throttle, check resistance across specified wire terminals of TPS connector. See the THROTTLE POSITION SENSOR RESISTANCE TEST  table. If resistance value does not change smoothly, replace TPS.

2) If resistance is not as specified, check harness. If harness is okay, adjust TPS. See ADJUSTMENTS article. If resistance is still not as specified after adjustment, replace TPS.