2006-2009 Suzuki LT-R450 Service Manual, Page 163Get this manual

2006-2009 Suzuki LT-R450 Service Manual, Page 163

FI SYSTEM DIAGNOSIS Step 1) Turn the ignition switch OFF2) Remove the lAP sensor3) Connect the vacuum pump gauge to the vacuum
pump gauge 09900-25008: Multi-circuit tester set Tester knob indication: Voltage (=-=-=) Is the voltage OK? GIS, Red or SSr
wire open or shorted to ground, or pooror connection If wire and connection are OK, intermittent trou ble or faulty ECM Recheck
each terminal and wire harness for open circuit and poor connection Replace the ECM with known good one, and inspect it againECM
coupler (Harness side) NO ICAUTION I If check result is not satisfactory, replace the lAP sensor with new one When using