2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 195Get this manual
FUEL SYSTEM (Programmed Fuel Injection) 5TCP Sensor Inspection Connect the pressure hose to the wastegate control solenoid valveRemove the plug from the pressure hoseConnect the ECM 26P gray connectorReplace the TCP sensor with known-good oneStart the engine according to the flushing procedure (page 5-3) and increase the engine speed above 3,000 rpmCheck the MIL and PGM-FI indicatorAre the MIL and PGM-FI indicator blinking? YES NO Replace the ECM with known good one, and recheck Replace the original TCP sensor with new oneTCP SENSOR
MIL 46 BLINKS (MST SWITCH)
Before starting the troubleshooting, check the MST switch connector for loose contacts or corroded terminals, and recheck if the MIL is blinking1MST Switch Signal Line Inspection Pull the safety lanyard clip off of the engine stop switchDisconnect the MST switch 2P connectorMST SWITCH 2P CONNECTOR