Engine Controls - MIL ON And P2014/P2015 Stored In ECM

24 12 08

December 17, 2012

2031075





Vehicle Information

Condition

Intake Manifold Restriction Check





MIL-ON and 1 or more of the following diagnostic codes may be stored in ECM fault memory.

Technical Background

Vacuum lines and "T" fittings may become clogged with debris from production or increasing mileage.

This debris may cause a restriction that could affect the intake manifold operation and cause the following P2014, P2015 faults.

Production Solution

N/A

Service

Ensure correct intake manifold is installed on engine, refer to ETKA.

The intake manifold runner can be checked for proper operation using MVB 143 field 3.

The vehicle must be driven in order to place a load on the engine.

The engine RPM should be quickly increased to at least 3000 RPM and released. MVB 143 field 3 value should immediately change from 0% up to 100%.

If the values in field 3 instantly change to 100%, the hose and fittings are not restricted. If no restriction has been identified, this bulletin does not apply. Continue GFF based diagnosis.

If there is a restriction, the values in field 3 will slowly increase or not increase at all. Inspect vacuum lines leading to intake manifold, and fittings, for restrictions (twisted, kinked hoses or blockages caused by debris).

Reposition or clean as required.








Warranty

Required Parts and Tools





No Special Parts required.

Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.