P0303

Test 1:

Test 2 - 4:

Test 5 - 7:

Test 8 - 11:

Test 12 - 15:

Test 16 - 17:

Test 18:

SYMPTOM
P0303-CYLINDER # 3 MISFIRE

TEST NOTE
This symptom is diagnosed using the P0300-MULTIPLE CYLINDER MISFIRE.

WHEN MONITORED
Any time the engine is running, and the Target Learning Coefficient has been successfully updated.

SET CONDITION
When more than a 1.0% misfire rate is measured during two trips.

POSSIBLE CAUSES
- Misfire
- Visual And Physical Inspection
- Ignition Wire
- ASD Relay Ouput Circuit (Coil)
- Engine Mechanical Problem
- Ignition Coil
- Coil Control Circuit
- Spark Plug
- Checking Fuel Pressure
- Fuel Pump Inlet Strainer Plugged
- Restricted Fuel Supply Line
- Fuel Pump Module
- Checking Fuel Leak Down
- Fuel Injector Operation
- ASD Relay Output Circuit (Injector)
- Fuel Injector
- Injector Control Circuit
- PCM (Ignition System)
- PCM