STEP 1. Check if the EGR valve sounds during initialization.
STEP 2. Using scan tool MB991958, read the diagnostic trouble code (DTC).
caution | To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. |
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is any DTC set?
Refer to, Diagnostic Trouble Code Chart . Go to Step 3.
STEP 3. Using scan tool MB991958, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following item in the actuator test. Refer to Actuator Test Reference Table .- Item 10: Evaporative Emission Purge Solenoid
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is the actuator operating properly?
Go to Step 4. Repair or replace it. Then confirm that the malfunction symptom is eliminated.
STEP 4. Check the spark plugs.
STEP 5. Check the ignition coil.
STEP 6. Check the positive crankcase ventilation system.