NISSAN MICRA K12
DTC P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
This valve operates on an on/off mode as it receives messages from the ECM. According to the engine requirements,
fuel vapor from the EVAP canister is released through this valve. The valve controls the rate of fuel flow.
Reference value In Data Monitor Mode with Consult II
Item Condition Specification
Purg vol C/V After warming engine Idle o%
Lever shift N(A/T). Neutral(M/T)
Under no load 2000 rpm 20 – 30%
DTC may be confirmed following the under mentioned procedures:
Procedure with Consult II
Switch off ignition, wait for 10 seconds.
Battery voltage should be more than 11V at idle.
Switch on ignition.
Select Data Monitor mode.
Start and idle engine for 13 seconds.
Proceed to perform Diagnostic Procedure if 1st trip DTC is noticed.
The same procedure is to be followed with GST.
When voltage is being measured, then ECM ground terminals are not to be used.
1. Check: valve power supply circuit
Switch off ignition
. Disconnect the harness connector to the valve
Switch on ignition
Between ground and valve terminal 1, check voltage.(Battery)
OK: proceed to 3 NG: proceed to 2
2. Find: the defective part check:
Harness connectors E50 & F1
Harness connector 14 (IPDM E/R)
Between valve and E/R for open/short in harness.
Between valve and ECM for open/short in harness.
Repair harness / connectors.
3. Check: for open/short in valve output signal circuit
Switch off ignition
Disconnect the harness connector to the ECM
Between ECM terminal 19 and valve terminal 2, check for harness continuity.
There should be continuity
Check for short to ground/power in harness.
With Consult II Without Consult II
OK: proceed to 4 OK: proceed to 5
NG: repair open / short to ground / power in harness / connectors.
4. Check: operation of the valve with Consult II
Connect all the harness connectors
Start the engine
With Consult II in Active Test mode perform Purg Vol CONT/V
As per the degree of the valve opening, the speed should vary
OK: proceed to 6 NG: proceed to 5
5. Check: the component: EVAP canister purge volume control solenoid valve
OK: proceed to 6 NG: replace the valve
6. Check: for Intermittent Incident
Refer to Trouble Diagnosis for Intermittent Incident.
End of Inspection
Component Inspection with Consult II
When the valve opening is 100% : Air passage continuity should exist.
When the valve opening is 0% : Air passage continuity should not exist.
Component Inspection without Consult II
When 12V direct current is supplied between the terminals : continuity present.
When there is no supply of current : there is no continuity.