Improper engine idling or engine fails to idle
Precautions: General safety (00)
Perform troubleshooting referring to the following points when ECM has detected no DTC and no abnormality has been found in Visual Inspection:M16A and Engine Basic Inspection:M16A.
| Condition | Possible Cause | Action |
|---|---|---|
|
Improper engine idling or engine fails to idle
|
Faulty spark plug
|
|
|
Faulty ignition coil assembly
|
||
|
Fuel pressure out of specification
|
||
|
Leaky manifold, throttle body or cylinder head gasket
|
Check air intake system.
|
|
|
Faulty evaporative emission control system
|
||
|
Faulty fuel injector
|
||
|
Poor performance of ECT sensor or MAP sensor
|
||
|
Faulty electric throttle body assembly
|
||
|
Faulty APP sensor
|
||
|
Faulty ECM
|
||
|
Loose connection or disconnection of vacuum hoses
|
Check connection of vacuum hoses.
|
|
|
Malfunctioning PCV valve
|
||
|
Engine overheating
|
Condition “Engine overheating”
|
|
|
Low compression
|
||
|
Faulty generator and/or its circuit
|
||
|
VVT system out of order
|
•VVT actuator: VVT Actuator, Camshaft, Tappet and Shim Inspection:M16A
•Valve timing: Timing Chain and Chain Tensioner Inspection:M16A •OCV oil circuit: Timing Chain Cover Inspection:M16A |