Code 0807

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.
- Ignition switch "ON"
- Closed throttle position
- Low engine coolant temperature
- During deceleration
- Engine stopped
- Low vehicle speed (M/T models)
- For 60 seconds after starting engine (After warm-up to normal operating temperature)

COMPONENT DESCRIPTION



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 opens the EVAP canister purge control valve.




When the vacuum signal is cut by EVAP canister purge control solenoid valve, EVAP canister purge control valve closes.




EVAPORATIVE EMISSION SYSTEM DIAGRAM




CONSULT Reference Value in Data Monitor Mode




ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and 43 (ECM ground).




ON BOARD DIAGNOSIS LOGIC

DTC CONFIRMATION PROCEDURE

NOTE: If "DTC Confirmation Procedure has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.

With CONSULT
21. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure".

With GST
21. Turn ignition switch "ON" and wait at least 5 seconds.
2. Select "MODE 3" with GST.
3. If 1st trip DTC is detected, go to "Diagnostic Procedure".

Without Scan Tools
21. Turn ignition switch "ON" and wait at least 5 seconds.
2. Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure".







WIRING DIAGRAM

1 CHECK POWER SUPPLY:

2 DETECT MALFUNCTIONING PART:

3 CHECK OUTPUT SIGNAL CIRCUIT:

4 DETECT MALFUNCTIONING PART:

5 CHECK EVAP CANISTER PURGE CONTROL SOLENOID VALVE:

6 CHECK INTERMITTENT INCIDENT:

DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION







With CONSULT
1. Lift up driving wheels (M/T models only).
2. Turn ignition switch "ON".
3. Select "PURG CONT S/V" of "ACTIVE TEST" mode with CONSULT.
4. Start engine and warm it up to normal operating temperature.
5. Disconnect vacuum hose at EVAP canister purge control valve.




6. Touch "ON" and "OFF" and check for vacuum passing through the hose.







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




Check EVAP canister purge control valve as follows:
1. Blow air in port A and B, then ensure that there is no leakage.
2. Plug port B and blow air in port C and check that air flows freely from port D.
3. Plug port D and blow air in port C, check that there is no leakage.
4. Apply vacuum to port A. [Approximately -13.3 to -20.0 kPa (-100 to-150 mmHg, -3.94 to -5.91 inHg)]
Plug port D and blow air in port C and ensure free flow out of port B.