Diagnostic Aids

A restricted or leaking fuel feed pipe or hose will cause an "engine cranks but will not run" condition. Check fuel sender assembly connections inside fuel tank for poor connection. See CHART A1-7B for fuel pressure test.

An intermittent may be caused by a poor connection, rubbed-through wire insulation, or a wire broken inside insulation. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal-to-wire connections before replacing components.

Fig 1: Chart A1-7A Schematic - Fuel Sys CKT Opening Rly Test (Prizm)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Chart A1-7A Flow Chart (1 Of 2) - Fuel Sys CKT Opening Rly Test (Prizm)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Chart A1-7A Flow Chart (2 Of 2) - Fuel Sys CKT Opening Rly Test (Prizm)

Courtesy of GENERAL MOTORS CORP.