With Vehicle Control Module (VCM-A)

FUEL PUMP CIRCUIT
Diagnostic Trouble Code (DTC) P1222 indicates a failure in the fuel pump circuit. The relay has a terminal to test the fuel pump operation which is a separate terminal located near the fusible link cluster. By applying voltage at this terminal, if can be determined if the fuel pump is operating. This terminal can also be used to prime the fuel line to the Central MFI unit.

Refer to CHART A-5 for diagnosis of the fuel pump relay circuit. Refer to A Charts. Under Computer and Controls/System Diagnosis/Procedures. Testing and Inspection

An inoperative fuel pump will cause a no start condition. A fuel pump which does not provide enough pressure can result in poor performance.

An inoperative fuel pump relay can result in long cranking times, particularly if the engine is cold. The oil pressure switch will turn "ON" the fuel pump as soon as oil pressure reaches about 28 kPa (4 psi).