PINPOINT TEST G307413p2

PINPOINT TEST G307413p2 : DTC P0442, P0444, P0445, P0455, P0456; LEAK DETECTED: LARGE/20 THOU/40 THOU, PURGE VALVE CIRCUIT MALFUNCTION, OPEN/SHORT CIRCUIT,

G307413t3: CHECK FUEL FILLER CAP FITMENT AND CONDITION OF CANISTER, PIPES AND CONNECTORS
1. Make sure that the fuel filler cap is correctly installed and tightened.
2. Check the condition of the carbon canister.
3. Check the condition of all accessible pipes and connectors in the vapor line.

- Are the canister and all pipes and connectors in good condition?

-> YES
GO to Pinpoint Test G307413t4.

-> NO
REPAIR as necessary. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle. Recheck DTCs.

G307413t4: CHECK THE CANISTER PURGE VALVE DRIVE CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the canister purge valve electrical connector, EC63.
3. Disconnect the ECM electrical connector, PI01.
4. Measure the resistance between EC63, pin 02 (UY) and PI01, pin 66 (UY).

- Is the resistance greater than 5 Ohms?

-> YES
REPAIR the high resistance circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> NO
GO to Pinpoint Test G307413t5.

G307413t5: CHECK THE CANISTER PURGE VALVE DRIVE CIRCUIT FOR SHORT TO HIGH VOLTAGE
1. Reconnect the battery negative terminal.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between EC63, pin 02 (UY) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
REPAIR the short circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> NO
GO to Pinpoint Test G307413t6.

G307413t6: CHECK THE CANISTER PURGE VALVE DRIVE CIRCUIT FOR SHORT TO GROUND
1. Turn the ignition switch to the OFF position.
2. Measure the resistance between EC63, pin 02 (UY) and GROUND.

- Is the resistance less than 10,000 Ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> NO
GO to Pinpoint Test G307413t7.

G307413t7: CHECK THE CANISTER PURGE VALVE POWER SUPPLY
1. Turn the ignition switch to the ON position.
Make sure the EMS relay is energized.

2. Measure the voltage between EC63, pin 01 (GU) and GROUND.

- Is the voltage less than 10 volts?

-> YES
REPAIR the circuit between the canister purge valve and battery. This circuit includes the front power distribution box, fuse 14, the EMS relay, and the high power protection module. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> NO
INSTALL a new canister purge valve. Carry out a full evaporative system monitor drive cycle. Recheck DTCs.