CAUTION / NOTICE / HINT HINT:
PROCEDURE
Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding.
(a) Use the Techstream to check if the CAN communication system is functioning normally. Click here
(a) Check for DTCs and note any codes that are output. Click here (b) Clear the DTC. Click here (c) Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.
(a) Refer to the problem symptoms table. Click here
(a) Actuator Check Click here (b) DATA LIST / ACTIVE TEST Click here (c) Terminals of ECU Click here (d) On-vehicle Inspection (e) Inspection
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Toyota Tundra Service Manual > Sfi System: Evaporative Emission Pressure Switching Valve Stuck OFF (P2420)
DTC SUMMARY DTC No. Monitoring Item Malfunction Detection Condition Trouble Area Detection Timing Detection Logic P2420 Vent valve stuck open (vent) Following condition met during key-off EVAP monitor: EVAP pressure change when vent valve closed (ON) less than 0.3 kPa-g (2.25 mmHg-g) Canister pump m ...