2001 Mercury Mariner 50-60HP Factory Service Manual, Page 83Get this manual
IGNITION
Recommended Test
(1) DVA TEST (Direct Voltage Adapter) (2) OHM TEST (Resistance Testing) (3) Replace Component and Retest (4) Mechanical TestRepair PROBLEMCONDITION No Spark Condition (All Cylinders) Probable Cause Crank Position Sensor Stator (ECM) Stop Circuit Short to Ground:stop circuit leadlanyard stop switchtiller handle stop button (if supplied)remote control harness Ignition Coilprimary Circuit Shorted to Ground Spark Plugs Open Ground Condition:ignition coilstator ground(ECM) High Tension Lead Spark Plug Cap (Resistor) Spark Plug Ground Connection at:Ignition Coil Primary LeadsStator(ECM) Primary Coil Supply Leads High Resistance To Ground at:stoplanyard switch (watercorrosion) Weak Charge Coil Ignition CoilHigh Tension Lead(s) Spark Plug(s) Spark Plug Cap (Resistor) Spark Plug Cap Leak (ECM) Failure Perform Test No2 1-2 1-2 1-3 3