Notes On Intermittents

With key on and engine off, manipulate wiring and connectors while observing ECM Input EI78. If EI78 cycles to "LO" at any time, repair intermittent open.

Review snapshot data parameters stored with this code to verify failure. If failure is verified, check and repair intermittent wiring connections or sensor.

Fig 1: Input Code EI78, PSPS Circuit Schematic

Fig 2: Flow Chart, Input Code EI78, PSPS Circuit