2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 209Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 209

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TROUBLESHOOTING AND DIAGNOSTICS
Checking the High Pressure Fuel Pump Relay Continuity
1 Connect the DMT 2000 leads to the high pressure fuel pump relay terminals identified "a" and "b"2 Co