With SST-Engine Signal Monitor
FUEL TANK PRESSURE SENSORInspection Using SSTs (Monitor, Engine Signal and Adapter Harness):
1. Connect the SSTs (Monitor, Engine Signal and Adapter Harness) to the ECM.
2. Apply vacuum to the fuel tank pressure sensor by using a vacuum pump. Measure the pressure at ECM terminal 3A.
3. If not as specified, replace the fuel tank pressure sensor.