VACUUM HOSE CHECK
- Using the VACUUM HOSE ROUTING 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.
< 2.4L ENGINE >
To inspect these parts, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
< 3.8L ENGINE >
To inspect these parts, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
FUEL TANK DIFFERENTIAL PRESSURE SENSOR CHECK
To inspect the sensor, refer to Fuel Supply - Fuel Tank - Fuel Tank Inspection - 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 Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect these parts, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 2.4L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
To inspect the sensor, refer to Multiport Fuel Injection (MFI) < 3.8L Engine > - Multiport Fuel Injection (MFI) Diagnosis - DIAGNOSTIC TROUBLE CODE CHART .
