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.
- 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
- 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 DTC cannot be confirmed, perform "Procedure for malfunction B".
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 Generic Scan Tool
(1) Turn ignition switch "ON" and wait at least 5 seconds.
(2) Select "MODE 7" with GST.
OR
Without Scan Tool
(1) Turn ignition switch "ON" and wait at least 5 seconds.
(2) 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 until the engine coolant temperature rises to 60 to 80°C (140 to 176°F), then stop engine. (If the engine coolant temperature exceeds the above range, stop engine and wait until the temperature cools down to within this range.)
(4) Start engine and let it idle at least 70 seconds.
(5) Maintain the following conditions at least 5 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 Generic Scan Tool
(1) Jack up drive wheels.
(2) Turn ignition switch "ON" and select "MODE 1" mode with GST.
(3) Start engine and warm it up until the engine coolant temperature rises to 60 to 80°C (140 to 176°F), then stop engine. (If the engine coolant temperature exceeds the above range, stop engine and wait until the temperature cools down to within this range.)
(4) Start engine and let it idle at least 70 seconds.
(5) Maintain the following conditions at least 5 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)
(6) Select "MODE 7" mode with GST.
OR
Without Scan Tool
(1) Jack up drive wheels.
(2) Turn ignition switch "ON".
(3) Start engine and warm it up until the voltage between ECM terminal (59) and ground drops to 1.2 to 1.9V. (If the voltage drops below the above range, stop engine and wait until the voltage rises to within this range.)
(4) Start engine and let it idle at least 70 seconds.
5) Maintain the following conditions at least 5 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
(6) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(7) 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):
Evaporative Emission (EVAP) Canister Purge Control Valve/Solenoid Valve (DTC: P0443):
DIAGNOSTIC PROCEDURE
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), (B) 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).