Notes On Intermittents

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

Select ECM data code "ED01". Manipulate affected wiring and connectors. Watch for TPS value to go above 14° at closed throttle. Tap lightly on TPS with pencil or pocket screwdriver. 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: Hard Trouble Code E026 - Shorted Throttle Switch Circuit

Fig 2: Hard Trouble Code E026 - Shorted Throttle Switch Circuit (1 of 2)

Fig 3: Hard Trouble Code E026 - Shorted Throttle Switch Circuit (2 of 2)

Fig 4: Schematic for Hard Trouble Code E026