Quick Test of the Fuel Tank System
Quick test of the fuel tank system (USA/CDN)
Check diagnostic trouble codes (DTCs)
Note! When activating the quick test check so that none of diagnostic trouble codes (DTCs) ECM-4000, ECM-400A, ECM-4310, ECM-431A, ECM-4320 or ECM-432A are stored in the engine control module (ECM), which interrupts the leakage diagnostic.Check that none of these diagnostic trouble codes (DTCs) are stored.
- Ignition on.
Read off diagnostic trouble codes (DTCs).
If any of these diagnostic trouble codes (DTCs) are stored they must be remedied and erased first.
Are any of the above diagnostic trouble codes (DTCs) stored?
Yes - No Fault Found
No - Quick test of the fuel tank system
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Quick test of the fuel tank system
- Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
- Ignition on.
Activate the quick test of the fuel tank system.
Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system.
Note! The following conditions must be met in order for the quick test of the fuel tank system to be run correctly.
Conditions for the quick test of the fuel tank system to start:
- Engine off, ignition on
- The fuel tank filler flap must be locked
- The battery voltage must be 11-14 V
- The status of the test phase must be "NOT RUNNING".
- The status of the quick test for the fuel tank system must be "NOT COMPLETED".
Note! An unlocked fuel tank filler flap will result in the status "Blocked" when requesting to start the leakage test.
Hint: The fuel tank filler flap is locked automatically when the speed of the car reaches 7 km/h.
Note! The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.
Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test.
Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1".
Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED".
If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND".
If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault.
Other information
- Leak diagnostics Leak Diagnostics
- Description of parameters, quick test of the fuel tank system Description of Parameters, Quick Test of the Fuel Tank System
- Test phases Test Phases
Select an alternative to continue when the test is completed:
1. The test result for the fuel tank system and leak diagnostic unit is "OK, NO FAULT FOUND".
2. The test result for the fuel tank system is "FAULT FOUND, MAJOR LEAK" or "FAULT FOUND, MINOR LEAK".
3. The quick test does not start or the test result for the leak diagnostic unit is "FAULT FOUND" (and the fault type).
Select one of the above alternatives.
1 - Fault Found
2 - Fault-tracing information
3 - Fault-tracing information
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Fault-tracing information
The control module has detected a fault during the quick test of the fuel tank system. A diagnostic trouble code (DTC) for the fault is stored in the control module.
Read off diagnostic trouble codes (DTCs) from the vehicle communication socket. Fault trace any other diagnostic trouble codes (DTCs) stored in the control module.
Remedy as necessary.
Select a suitable alternative to continue:
1. Repeat the quick test for the fuel tank system
2. Exit.
Select one of the above alternatives.
1 - Check diagnostic trouble codes (DTCs)
2 - No Fault Found
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Fault-tracing information
The control module cannot run the leak diagnostic by activating the quick test of the fuel tank system. This may be because the conditions for starting the quick test of the fuel tank system have not been met, that the fault occurred during fault-tracing or that the fault existed before the fault-tracing began. Check that all conditions for starting the quick test of the fuel tank system are met and the all hoses, connectors, components etc are correctly reinstalled and undamaged.
Hint: Exit this quick test. Then read off diagnostic trouble codes (DTCs) from the vehicle communication socket. Fault trace any other diagnostic trouble codes (DTCs) stored in the engine control module (ECM).
Remedy as necessary.
Select a suitable alternative to continue:
1. Repeat the quick test for the fuel tank system
2. Exit.
Select one of the above alternatives.
1 - Check diagnostic trouble codes (DTCs)
2 - No Fault Found
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