P0447

G : P0447. CANISTER CLOSE VALVE CIRCUIT OPEN CIRCUIT

G1 : CHECK SUPPLY VOLTAGE TO CCV

1. Disconnect canister close valve electrical connector, FT5.
2. Turn the ignition switch to the ON position.
3. Measure the voltage at FT5, pin 1 (GU).

Is the voltage greater than 10 volts?
Yes
Goto G2

No
REPAIR the circuit between FT5, pin 1 (GU) and the EMS control relay. For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see 'diagnostic drive cycles' above.

G2 : CHECK THE CCV SIGNAL WIRE FOR CONTINUITY.

1. Disconnect the PCM electrical connector, EN16.
2. Measure the resistance between EN16, pin 67 (O) and FT5, pin 2 (O).

Is the resistance less than 5 ohms?
Yes
Goto G4

No
REPAIR the circuit between EN16, pin 67 (O) and FT5, pin 2 (O). For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see 'diagnostic drive cycles' above.

G3 : CHECK THE CCV SIGNAL WIRE FOR SHORT TO BATTERY

1. Turn the ignition switch to the ON position.
2. CHECK for a voltage at FT5, pin 2 (O).

Is the voltage greater than 1 volt?
Yes
REPAIR the short to battery. For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see 'diagnostic drive cycles' above.

No
Goto G4

4 : CHECK THE CCV RESISTANCE

1. CHECK the resistance between pins 1 and 2 of the CCV.

Is the resistance 25 to 30 Ohms at 20 degrees C (68 degrees F)?
Yes
INSTALL a new PCM. Before replacing a PCM, contact Dealer technical support.

No
INSTALL a new CCV. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see 'diagnostic drive cycles' above.