Inspection Procedure

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Fig 1: Checking Charcoal Canister For Cracks Or Damage

Courtesy of GENERAL MOTORS CORP.

Visually check the charcoal canister for cracks or damage.
If cracks or damage are found, replace the charcoal canister assembly.

Fig 2: Checking Charcoal Canister Operation

Courtesy of GENERAL MOTORS CORP.

Check charcoal canister operation.
With the purge port closed, blow 1.10 kpa(11.2 gf/cm² 0.16 psi) of air into the vent port, and check that air flows from the air inlet port. If the result is not as specified, replace the charcoal canister assembly.

Fig 3: Checking That Air Flows From Purge Port With Vent Port Closed

Courtesy of GENERAL MOTORS CORP.

With the vent port closed, blow 1.10 kPa (0.16 psi) of air into the air inlet port, and check that air flows from the purge port. If the result is not as specified, replace the charcoal canister assembly.

Fig 4: Checking For Air Leakage

Courtesy of GENERAL MOTORS CORP.

Check for air leakage.
With the purge port and air inlet port closed, apply 19.6 kPa (2.81 psi) of pressurized air into the vent port, then confirm that pressure is retained for 1 minute. If the result is not as specified, replace the charcoal canister assembly.