Workshop Manual

6E–259
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0300 – Engine Misfire Detected (Cont'd)
Step NoYesValue(s)Action
17 1. Perform the “Injector Coil/Balance Test”.
2. If a problem is found, replace faulty injector(s) as
necessary.
Did any of the injectors require replacement?
— Verify repair Go to Step 18
18 1. Check for an engine mechanical problem. Refer to
Engine Mechanical Diagnosis to diagnose the
following conditions:
B A faulty or incorrect camshaft
B Leaking or sticky valves or rings
B Excessive valve deposits
B Weak valve springs
B Incorrect valve timing
B A leaking head gasket
B A loose or broken motor mount
2. If a problem is found, repair as necessary.
Was a basic engine mechanical problem found and
repaired?
— Verify repair Go to Step 19
19 1. Check for a transmission TCC problem. Refer to
4L30-E Automatic Transmission Diagnosis .
2. If a problem is found, repair the transmission as
necessary. Refer to 4L30-E Automatic
Transmission Unit Repair .
Was a transmission problem found and repaired?
— Verify repair Go to Step 20
20 Replace the MAF sensor.
Is the action complete?
— Verify repair —