Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT CHARCOAL CANISTER ASSEMBLY

(a) Visually check the charcoal canister assembly for cracks or damage.

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

(b) Check charcoal canister assembly operation.

(1) With the purge port closed, blow 5 kPa (0.1 kgf/cm2, 0.7 psi) of air into the vent line port, and check that air flows from the air inlet line port.

Text in Illustration

*a

Vent Line Port

*b

Air Inlet Line Port

*c

Purge Line Port

*d

Air

If the result is not as specified, replace the charcoal canister assembly.

(2) With the vent port closed, blow 5 kPa (0.1 kgf/cm2, 0.7 psi) of air into the air inlet line port, and check that air flows from the purge line port.

Text in Illustration

*a

Vent Line Port

*b

Air Inlet Line Port

*c

Purge Line Port

*d

Air

If the result is not as specified, replace the charcoal canister assembly.

(c) Check for air leaks.

(1) Connect a pressure gauge to the vent line port of the charcoal canister assembly.

Text in Illustration

*1

Pressure Gauge

*a

Vent Line Port

*b

Air Inlet Line Port

*c

Purge Line Port

(2) With the purge line port and air inlet line port closed, apply 20 kPa (150 mmHg, 5.91 in.Hg) of pressurized air into the vent line port, and then confirm that pressure is retained for 1 minute.

If the result is not as specified, replace the charcoal canister assembly.

(d) Check the canister pump module.

(1) Connect a positive (+) lead from the battery to terminal 5 and a negative (-) lead to terminal 1.

(2) Check that a clicking sound is heard from the canister pump module.

If the result is not as specified, replace the canister pump module.

    Components

    Installation

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