Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLVO2005V70 L5-2.4L TURBO VIN 54 B5244T5REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESVEHICLE COMMUNICATION, QUICK TEST FUEL TANK SYSTEMTEST PHASES
2005 Volvo V70 L5-2.4L Turbo VIN 54 B5244T5
Test Phases
2005 Volvo V70 L5-2.4L Turbo VIN 54 B5244T5SECTION Test Phases
Test phases
- REFERENCE PHASE 1 Reference phase for leaks of 0.5 mm and function test of the leak diagnostic unit is running. If any faults are detected during this phase the major leak test starts. If any faults are detected during the phase the test and the test result for the leak diagnostic unit will be " FAULT FOUND" with the fault type
- MAJOR LEAK Leak diagnosis for major leaks is in progress. If leakage is detected during this phase the minor leak test starts. If leakage is detected during this phase (the power consumption of the pump is equal to or lower than a desired value) the test stops and the test result for the fuel tank system will be " FAULT FOUND, MAJOR LEAK".
- MINOR LEAK Leak diagnosis for minor leaks is in progress. If no leakage is detected during this phase the test stops and the test result for the fuel tank system will be "NO FAULT FOUND". If leakage is detected during this phase (the power consumption of the pump is equal to or lower than the power consumption during the reference phase), the control module will run reference phase 2
- REFERENCE PHASE 2 The control module runs a second reference phase (the function of the leak diagnostic unit is checked) if leakage is detected during the leakage diagnostic phase (minor leak). When this phase is completed and if no fault is detected by the leak diagnostic unit, the test result for the fuel tank system will be "FAULT FOUND, MINOR LEAK".
- NOT RUNNING The leak diagnostic is not running, the quick test of the fuel tank system has not started or has finished.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.