FX45 AWD V8-4.5L (VK45DE) (2006)
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried out successfully. In this case, find
the cause of the incident by referring to the Diagnostic Procedure.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1. Check that throttle valve is fully closed.
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the
cause of the incident.
It is useful to perform EC-801, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE". See: Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes/Specification Value
5. If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform Idle Air Volume Learning all
over again:
-
Engine stalls.
-
Erroneous idle.