2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 473Get this manual
METERSWITCHES Connect the peak voltage adaptor to the Pink (+) wire terminal and engine ground ()TOOLS: IgnitionMate peak voltage tester MTP07-0286 (U.S.Aonly) or 07HGJ-0020100 Peak voltage adaptor with commercially available (not available in U.S.A digital multimeter (impedance 10 M#DCV minimum) CONNECTION: Pink (+) engine ground () Start the engine and measure the tachometer input peak voltagePEAK VOLTAGE: 10.5 minimum If the measured value is more than 10.5 V, replace the combination meterIf the measured value is below 10.5 V, replace the ECMIf there is no voltage, check as follows: 1Remove the seats (page 3-4)2Disconnect the ECM 26P gray connectorECM 26P GRAY CONNECTOR WIRE HARNESS SIDE COMBINATION METER 8P GRAY CONNECTOR (viewed from the terminal side)