Notes On Intermittents

Select ECM input EI72. Manipulate affected wiring and connectors and observe for throttle switch status to change. Check for intermittent ground on circuit No. 427.

Select ECM data parameter ED01. Manipulate affected wiring and connectors. Watch for TPS value to increase to greater than 14 degrees at closed throttle. Tap lightly on TPS with pencil to check for intermittent TPS operation. Check for binding TPS lever, intermittent open on circuit No. 476, or intermittent short to 5 volts on circuit No. 417 at TPS.

Fig 1: ECM Code E026, Shorted Throttle Switch Circuit Schematic

Fig 2: Flow Chart, Code E026, Shorted Throttle Switch Circuit