2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 206Get this manual
1G-23 Fuel System: Special tool (A): 0993088730 (36-pin test cord set)Stevens peak reading voltmeter CD-77 Tester knob indication NEG 50 1) Disconnect all ignition coil connectors from the ignition coils2) Connect the test cord between the ECM and wire harness as shown in figure, then turn ignition switch "ON"3) Connect the tester probe ("", Black) to the starter motor magnetic switch terminal "B" (connected to battery positive (+) terminal) as shown in figure4) Connect the tester probe ("+", Red) to each terminalInjector Terminal Wire color (Engine harness) No.1 45 OB No.2 71 BBr No.3 47 RW No.4 59 Lg 5) Crank the engine and measure the voltageIf out of specification, inspect the related parts as described in "Fuel System Diagnostic InformationFuel Injection System Troubleshooting"Refer to "Fuel System Diagnosis" (Page 1G-13) and "Fuel Injection System Troubleshooting" (Page 1G-14)Fuel injector operating signal Standard: Approx6 10 or over