Fuel Tank Pressure Control Solenoid Valve Circuit
- On Vitara, disconnect vacuum hose from fuel tank pressure control solenoid valve (FTPCSV). Start engine and run at idle. Check for vacuum at hose from intake manifold. If vacuum is not present, repair or replace clogged vacuum hose or vacuum passage. If vacuum is present, turn engine off and go to next step.
- Blow into port "A". See Fig 1
. Air should come out of filter and not port "B". Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located under left side of instrument panel. Turn ignition on. Select MISC TEST mode and use scan tool to turn FTCPSV on. If scan tool is not available, remove ECM/PCM cover and using fused jumper wire, ground ECM/PCM harness connector terminal C51-2 terminal No. 6 on Vitara. Blow into port "A" again. Air should now come out of port "B" and not filter. If operation is as specified, FTPCSV, wiring and connections are okay. If operation is not as specified, go to FUEL TANK PRESSURE CONTROL SOLENOID VALVE (FTPCSV)
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Courtesy of SUZUKI OF AMERICA CORP.