DTC 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.
- Start switch "ON"
- Closed throttle position
- Low or high engine coolant temperature
- During deceleration
- Engine stopped
- Low vehicle speed (M/T models)
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 REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
ECM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values, and are measured between each terminal and (25) (ECCS ground) with a voltmeter.
ON BOARD DIAGNOSIS LOGIC
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Perform "Procedure for malfunction A" first. If the (1st trip) DTC cannot be confirmed, perform "Procedure for malfunction B" on next page.
Procedure for Malfunction A
With Consult
(1) Turn ignition switch "ON".
(2) Select "DATA MONITOR" mode with CONSULT.
(3) Wait at least 5 seconds.
OR
With GST
(1) Turn ignition switch "ON" and wait at least 5 seconds.
(2) Select "MODE 7" with GST.
OR
No Tools
(1) 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.
Procedure for Malfunction B
With Consult
(1) Jack up drive wheels.
(2) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
(3) Start engine and warm it up sufficiently.
(4) Check that tank fuel temperature is above 0°C (32°F).
(5) Turn ignition switch "OFF" and wait at least 5 seconds.
(6) Start engine and let it idle at least 70 seconds.
(7) Maintain the following conditions at least 10 seconds.
Gear position:
"2" or "D" range (A/T)
"3rd" or "4th" gear (M/T)
Vehicle speed: 40 - 80 km/h (25 - 50 MPH)
Engine speed: 1,500 - 2,500 rpm
Coolant temperature: Less than 100°C (212°F)
OR
With GST
(1) Jack up drive wheels.
(2) Turn ignition switch "ON" and select "MODE 1" with GST.
(3) Start engine and warm it up sufficiently.
(4) Check that voltage between ECM terminal (52) and ground is less than 4.2V.
(5) Turn ignition switch "OFF" and wait at least 5 seconds.
(6) Start engine and let it idle at least 70 seconds.
(7) Maintain the following conditions at least 10 seconds.
Gear position:
"2" or "D" range (Art)
"3rd" or "4th" gear (M/T)
Vehicle speed: 40 - 80 km/h (25 - 50 MPH)
Engine speed: 1,500 - 2,500 rpm
Coolant temperature: Less than 100°C (212°F)
(8) Select "MODE 7" with GST.
OR
Without Consult
(1) Jack up drive wheels.
(2) Turn ignition switch "ON".
(3) Start engine and warm it up sufficiently.
(4) Check that voltage between ECM terminal (52) and ground is less than 4.2V.
(5) Turn ignition switch "OFF" and wait at least 5 seconds.
(6) Start engine and let it idle at least 70 seconds.
(7) Maintain the following conditions at least 10 seconds.
Gear position:
"2" or "D" range (A/T)
"3rd" or "4th" gear (M/T)
Vehicle speed: 40 - 80 km/h (25 - 50 MPH)
Engine speed: 1,500 - 2,500 rpm
Voltage between ECM terminal (59) and ground: More than 0.8V
(8) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(9) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
EC-CANI/V-01 Evaporative Emission (EVAP) Canister Purge Control Valve/Solenoid Valve (DTC: P0443):
WIRING DIAGRAM
DIAGNOSTIC PROCEDURES
Procedure for Malfunction A
Procedure for Malfunction B
COMPONENT INSPECTION
EVAP Canister Purge Control Solenoid Valve
Check air passage continuity.
If NG, replace solenoid valve.
EVAP Canister Purge Control Valve
1. Blow air in ports (A), OB and (c) and ensure that there is no leakage.
2. Apply vacuum to port (A). [Approximately -13.3 to -20.0 kPa (-100 to -150 mmHg, -3.94 to -5.91 inHg)]
Then blow air in port (c) and ensure free flow out of port (B).