ES–212
2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES
DESCRIPTION
When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely
high HC concentration levels can cause an increase in exhaust emission levels. High concentrations of
HC can also cause increases in the Three-Way Catalytic Converter (TWC) temperature, which may cause
damage to the TWC. To prevent this increase in emissions and to limit the possibility of thermal damage,
the ECM monitors the misfire rate. When the temperature of the TWC reaches the point of thermal
degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the Camshaft Position
(CMP) sensor and the Crankshaft Position (CKP) sensor. The CMP sensor is used to identify any
misfiring cylinders and the CKP sensor is used to measure variations in the crankshaft rotation speed.
Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds.
If the misfire exceeds the threshold levels and may cause emission deterioration, the ECM illuminates the
MIL and sets a DTC.
DTC
P0300
Random / Multiple Cylinder Misfire Detected
DTC
P0301
Cylinder 1 Misfire Detected
DTC
P0302
Cylinder 2 Misfire Detected
DTC
P0303
Cylinder 3 Misfire Detected
DTC
P0304
Cylinder 4 Misfire Detected
DTC
P0305
Cylinder 5 Misfire Detected
DTC
P0306
Cylinder 6 Misfire Detected
DTC No.
DTC Detection Condition
Trouble Area
P0300
Simultaneous misfiring of several cylinder detected
(2 trip detection logic)
•
Open or short in engine wire harness
•
Connector connection
•
Vacuum hose connections
•
Ignition system
•
Injector
•
Fuel pressure
•
Mass Air Flow (MAF) meter
•
Engine Coolant Temperature (ECT) sensor
•
Compression pressure
•
Valve clearance
•
Valve timing
•
PCV valve and hose
•
PCV hose connections
•
Air induction system
•
ECM
Summary of Contents for 2GR-FE
Page 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Page 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Page 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Page 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Page 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Page 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Page 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Page 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Page 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Page 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Page 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Page 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...