Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

1: Perform this procedure in order to determine that no EVAP diagnostic DTC is present.
3: This test locates fuel leakage in the fuel pipes.
4: This tests for fuel leaks below the fuel tank fuel level.
5: This test locates fuel vapors escaping above the fuel level in the fuel tank.

Fuel Tank Leak Test

Step	Action	Yes	No
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	CAUTION: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby. Raise the vehicle. Refer to Lifting and Jacking the Vehicle . Inspect the fuel tank and the fuel pipes for damage or for external leaks. Did you find fuel leaking from the fuel tank?	Go to Step 6	Go to Step 3
3	Turn ON the ignition, with the engine OFF. Command the fuel pump ON with a scan tool. Inspect for fuel leaking from the fuel pipes. Did fuel leak from the fuel pipes?	Go to Step 7	Go to Step 4
4	Turn OFF the ignition. Install the J 41413-200 Evaporative Emissions System Tester (EEST) and the . See Special Tools .J 41415-40 Fuel Tank Cap Adapter. See Special Tools . Test for a leak referring to the J 41413-210 Operator Manual. IMPORTANT: If the floating indicator registers any flow after stabilizing, a leak is evident. Raise the vehicle. Refer to Lifting and Jacking the Vehicle . Inspect for a fuel leak while the system is under pressure. Did fuel leak from the fuel tank?	Go to Step 6	Go to Step 5
5	Using the J 41413-200 and the J 41413-210 Operator Manual, introduce smoke into the evaporative emission (EVAP) system. See Special Tools . IMPORTANT: The fuel tank may need to be partially lowered. Refer to Fuel Tank Replacement . inspect for leaks in any of the following locations: The fuel tank, the fill limiter vent valve, the pressure relief valve, and the rollover valves-Refer to Fuel Tank Replacement . The fuel sender housing and fuel sender seal-Refer to Fuel Sender Assembly Replacement . The fuel tank pressure (FTP) sensor seal-Refer to Fuel Tank Pressure Sensor Replacement . The EVAP vapor pipes-Refer to Evaporative Emissions (EVAP) Hose Routing Diagram . The fuel fill pipe, the fuel fill hose, and the fuel fill cap-Refer to Filler Tube Replacement . Did you find and correct the condition?	Go to Step 8	Go to Diagnostic Aids
6	Replace the fuel tank. Refer to Fuel Tank Replacement . Did you complete the replacement?	System OK	-
7	Replace the leaking fuel pipe. Did you complete the replacement?	System OK	-
8	Operate the system under the condition of the customer concern in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2