P1449

FA20 ENGINE CONTROL: SFI SYSTEM: P1449; Evaporative Emission System Lid Open Switch Stuck ON; 2013 MY FR-S [03/2012 -]
P1449 - Evaporative Emission System Lid Open Switch Stuck ON

DTC SUMMARY





DESCRIPTION

The description can be found in EVAP (Evaporative Emission) System EVAP System.

MONITOR DESCRIPTION

The ECM monitors for canister filter in the canister pump module. The pressure is checked every 5 seconds and if the pressure difference becomes more than threshold, stops the EVAP system monitor. The ECM then illuminates the MIL and stores the DTC (2 trip detection logic).

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





MONITOR RESULT

Refer to Checking Monitor Status Mode 6 Data.

CONFIRMATION DRIVING PATTERN

NOTICE:
* The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes.
* Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
* Do not run the engine during this operation.
* When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature below 35°C (95°F) and the coolant temperature below 45°C (113°F).

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch to ON and turn the Techstream on.

3. Clear DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4. Turn the ignition switch off and wait for at least 30 seconds.

5. Turn the ignition switch to ON and turn the Techstream on.

6. Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.

7. After the Evaporative System Check is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.

8. Input the DTC: P1449.

9. Check the DTC judgment result.





HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.

10. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT EVAP HOSE (DRAIN HOSE, PIPE AND TUBE)

(a) Check for filter blockage in the drain hose, pipe and tube.

OK:

OK: No blockages in the drain hose, pipe and tube.

NG -- REPLACE EVAP HOSE (DRAIN HOSE, PIPE AND TUBE)
OK -- Continue to next step.

2. INSPECT EVAP HOSE (CANISTER PUMP MODULE - DRAIN TUBE)

(a) Check for filter blockage in the EVAP purge line between the canister pump module and drain tube.

OK:

No blockages in the EVAP purge line between the canister pump module and drain tube.

NG -- REPLACE EVAP HOSE (CANISTER PUMP MODULE - DRAIN TUBE)
OK -- Continue to next step.

3. INSPECT CANISTER PUMP MODULE (CANISTER FILTER)

(a) Check for filter blockage in the canister pump module (canister filter).

OK:

No blockages in the canister filter.

NG -- REPLACE CANISTER PUMP MODULE (CANISTER FILTER)
OK -- Continue to next step.

4. REPLACE CANISTER PUMP MODULE

(a) Replace the canister pump module Removal.

NEXT -- PERFORM EVAP SYSTEM

5. REPLACE EVAP HOSE (DRAIN HOSE, PIPE AND TUBE)

NEXT -- PERFORM EVAP SYSTEM

6. REPLACE EVAP HOSE (CANISTER PUMP MODULE - DRAIN TUBE)

(a) Replace the clogged EVAP purge line.

NEXT -- PERFORM EVAP SYSTEM

7. REPLACE CANISTER PUMP MODULE (CANISTER FILTER)

(a) Replace the canister pump module Removal.

NEXT -- Continue to next step.

8. PERFORM EVAP SYSTEM

NOTICE:
* The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes.
* Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
* Do not run the engine in this step.
* When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F) and the coolant temperature below 45°C (113°F).

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.

(f) After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes.

HINT
If no pending DTCs are found, the repair has been successfully completed.

NEXT -- END