P1492

SYSTEM DESCRIPTION
This system controls the vacuum signal applied to the EVAP canister purge control valve. When the ECM detects any of the following conditions, current does not flow through the EVAP canister purge control solenoid valve.
The solenoid valve cuts the vacuum signal so that the EVAP canister purge control valve remains closed.
- Start switch "ON"
- Closed throttle position
- Low or high engine coolant temperature
- During deceleration
- Engine stopped
- For 60 seconds after starting engine (After warming up to normal operating temperature)

COMPONENT DESCRIPTION




EVAP canister purge control solenoid valve
The EVAP canister purge control solenoid valve responds to signals from the ECM. When the ECM sends an OFF signal, the vacuum signal (from the intake manifold to the EVAP canister purge control valve) is cut.
When the ECM sends an ON (ground) signal, the vacuum signal passes through the EVAP canister purge control solenoid valve. The signal then reaches the EVAP canister purge control valve.




EVAP canister purge control valve
When the vacuum signal is cut by EVAP canister purge control solenoid valve, EVAP canister purge control valve shuts off the EVAP purge line.

Evaporative Emission System Diagram:

Consult-II Reference Value In Data Monitor Mode:

ECM Terminals And Reference Value:

On Board Diagnosis Logic:

NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn the ignition switch "OFF" and wait at least 5 seconds before conducting the next test.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1St trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

With Generic Scan Tool
Follow the procedure "With CONSULT-II" above.

EC-CANI/V-01:

EC-CANI/V-01 Connector View:

WIRING DIAGRAM

Super Multiple Junction (SMJ) Terminal Arrangement (B4, B101, E70, E81, F63, M3, M49, M50):

Fuse Block - Junction Block (J/B) Terminal Arrangement (B1, B2, E61, E62, E63, E64, M1):

DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION

EVAP canister purge control solenoid valve










With Consult
1. Turn ignition switch "ON".
2. Select "PURG CONT S/V" of "ACTIVE TEST" mode with CONSULT-II.
3. Start engine and warm it up to normal operating temperature.
4. Disconnect vacuum hose at EVAP canister purge control valve.
5. Touch "ON" and "OFF" and check for vacuum passing through the hose.

OR







Without Consult
Check air passage continuity.
If NG or operation takes more than 1 second, replace solenoid valve.