VACUUM HOSE CHECK
- Using the «VACUUM HOSE ROUTING»(ref-269510-S29058182092007103100000) diagram as a guide, check that the vacuum hoses are correctly connected.
- Check the connection of the vacuum hoses, (removed, loose, etc.) and confirm that there are no sharp bends or damage.
MASS AIRFLOW SENSOR CHECK
To inspect these parts, refer to DIAGNOSTIC TROUBLE CODE CHART .
BAROMETRIC PRESSURE SENSOR CHECK
To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART .
ENGINE COOLANT TEMPERATURE SENSOR CHECK
To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART .
INTAKE AIR TEMPERATURE SENSOR CHECK
To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART .
FUEL TANK DIFFERENTIAL PRESSURE SENSOR CHECK
To inspect the sensor, refer to FUEL TANK DIFFERENTIAL PRESSURE SENSOR CHECK .
EVAPORATIVE EMISSION VENTILATION SOLENOID CHECK
Refer to EMISSION CONTROL - EVAPORATIVE EMISSION CANISTER AND FUEL TANK PRESSURE RELIEF VALVE - INSPECTION - EVAPORATIVE EMISSION VENTILATION SOLENOID CHECK .
EGR VALVE (STEPPER MOTOR) CHECK
Required Special Tool
MB991658: Test Harness Set
EGR VALVE (STEPPER MOTOR) CLEANING
Note. DO not use solvents or other cleaning agents, which will enter the motor and cause a malfunction.
Remove the EGR valve and make sure that it is not stuck and does not have any carbon deposits. If there are any carbon deposits, use a wire brush to clean it.
To inspect these parts, refer to DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART .
CRANKSHAFT POSITION SENSOR CHECK
To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART .
Scheme 20
Scheme 21
Scheme 22
Scheme 23
Scheme 24
- Connect a hand vacuum pump to nipple (A) of the evaporative emission canister and evaporative emission ventilation solenoid assembly.
- Connect a plug to nipple (B) of the evaporative emission canister and evaporative emission ventilation solenoid assembly.
- Check air tightness by applying a vacuum with voltage applied directly from the battery to the evaporative emission ventilation solenoid and without applying voltage. EVAPORATIVE EMISSION VENTILATION SOLENOID SPECIFICATION Battery voltage Normal condition Applied Vacuum maintained Not applied Vacuum leaks
- Measure the resistance between the terminals of the solenoid. Standard value: 17 - 21 ohms [at 20°C (68°F)]