Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 89Get this manual
ENGINE CONTROL SYSTEM
3Connect the tester probe(Red) to each terminalInjector No.1 No.2 No.3 No.4 Terminal No40 39 38 22
(Voltage)
12 (Time) Peak voltage reading (NEG) level for peak voltmeter
4Crank the engine and measure voltageFuel injector operating signal: 10 FUEL PUMP SECOPERATING SOUND Turn the ignition switch ON and check for fuel pump operating soundFuel pump operating sound: Sounds for approx3 seconds only NOTE: Fuel pump operating sound is low because the pump is in the fuel vapor separatorIf you cannot hear clearly, use sound scope or long blade screw driverIGNITION COIL OPERATING SIGNAL 09930-89950: 44-pin test cord Peak voltmeter Stevens CD-77 Tester range: NEG50 1Connect the test cords as shown, then turn the ignition switch ON2Connect the tester probe(Black) to the starter motor relay right terminal (connected to the battery positiveterminal) as shown3Connect the tester probe(Red) to each terminalIgnition coil