P0444

: P0444. EVAPORATIVE PURGE VALVE CIRCUIT OPEN CIRCUIT

G92425t6 : CHECK SUPPLY VOLTAGE TO EVAPORATIVE PURGE VALVE
1. Disconnect Evaporative purge valve electrical connector, JB170.
2. Turn the ignition switch to the ON position.
3. Measure the voltage at JB170, pin 1 (GU).

- Is the voltage greater than 10 volts?

-> Yes

-> No
REPAIR the circuit between Evaporative purge valve electrical connector, JB170, pin 1 (GU) and the EMS control relay. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

G92425t7 : CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR CONTINUITY
1. Disconnect the ECM electrical connector, EN16.
2. Measure the resistance between EN16, pin 66 (UY) and JB170, pin 2 (UY).

- Is the resistance less than 5 ohms?

-> Yes

-> No
REPAIR the circuit between EN16, pin 66 (UY) and JB170, pin 2 (UY). CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

G92425t21 : CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR SHORT TO GROUND
1. Measure the resistance between JB170, pin 2 (UY) and GROUND.

- Is the resistance less than 10,000 ohms?

-> Yes
REPAIR the short to ground. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

-> No

G92425t22 : CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR SHORT TO BATTERY
1. Connect the ECM electrical connector, EN16.
2. Turn the ignition switch to the ON position.
3. CHECK for a voltage at JB170, pin 2 (UY).

- Is the voltage greater than 1 volt?

-> Yes
REPAIR the short to battery. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

-> No

G92425t8 : CHECK THE EVAPORATIVE PURGE VALVE RESISTANCE
1. CHECK the resistance between pins 1 and 2 of the Evaporative purge valve.

- Is the resistance 30 to 34 ohms at 20 degrees C (68 degrees F)?

-> Yes
INSTALL a new ECM. Before replacing a ECM, contact Dealer technical support.

-> No
INSTALL a new Evaporative purge valve. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.