Notes On Intermittents

Manipulate switch wiring while observing the "°F" status light. If the fault is induced, the "°F" light will flash on. Repair intermittent open in. Circuit No. 446.

NOTE: For diagnostic chart, see Fig 1 . For circuit identification, see Fig 2 .

Fig 1: Identifying ECM Input EI81: Fourth Gear Switch Flow Chart

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying ECM Input EI81: Fourth Gear Switch Flow Chart Circuit

Courtesy of GENERAL MOTORS CORP.