Main Relay (Computer/Fuel System): Testing and Inspection

NOTE: The main relay inspection is contained within the ECM main power supply inspection; refer to below.

Circuit Diagram-Main Power Supply And Ground (Part 1 Of 2):

Circuit Diagram-Main Power Supply And Ground (Part 2 Of 2):

Diagnostic Chart-Main Power Supply And Ground Circuit (Part 1 Of 2):

Diagnostic Chart-Main Power Supply And Ground Circuit (Part 2 Of 2):