Start the fuel tank system test
If the engine coolant temperature (ECT) is under 70 °C (158 °F) the test cannot start.
- Engine idling.
- Start the quick test
Swiftest Running Status
This parameter shows the status of the test, with two possible values:
-RUNNING
-NOT RUNNING
Fault Status
These parameters show the status of the diagnostic tests that are included in the Leakage Diagnostic Test:
-Status failure Canister Close Valve
-Status failure Rough leak
-Status failure PCV Open
-Status failure Small Leak.
The Fault Status parameters have three possible values, depending on the test outcome:
-Not ready
-Ready, no fault found
-Ready, fault found
Sensor / actuator parameters (plotter)
-Fuel Tank Pressure (red line)
-Canister Close Valve (green line)
- PCV (yellow line)
Swift Test Procedure
Initiate Swift Test
The Swift Test is initiated with "Start reading" button.
When the test has started, "RUNNING" will be displayed in the Running status display. The test will go through the individual steps in order:
1. Status failure Canister Close Valve
2. Status failure Rough Leak
3. Status failure PCV Open
4. Status failure Small Leak.
Stop / abort test conditions
The test will stop when one of these conditions has been fulfilled:
-The test has been completed successfully
-A fault condition has been found
-One or more required conditions for performing the test is no longer valid. This could for example be extreme fuel trim integrator value, caused by saturated canister.
When the test has stopped, "NOT RUNNING" will be displayed. To complete the test cycle, and store possible DTCs, the accelerator has to be depressed briefly and then released. The Swift Test Status will then shift from "NOT RUNNING" to "RUNNING" and then back to "NOT RUNNING". This procedure will also re-initiate a test that has been aborted. Three such attempts are possible, after that the engine has to be switched off and restarted to enable a new Swift Test cycle.
Test complete
If a fault has been detected by the test, a DTC will be stored in the Engine Control Module. Proceed with the applicable fault tracing procedure. The DTCs must be cleared before the Swift Test can be started again.