E049

Code E49:

Emission Wiring Circuit:

DESCRIPTION:

This diagnostic test monitors the AIR system to detect operating problems with the Electric Divert Valve (EDV) and Electric Switching Valve (ESV). It performs these tests using the oxygen sensor and ECM integrator function to monitor valve function.

TEST CONDITIONS:

1. Codes E13, E14, E15, E21, E22, E24, E31, E32, E34, E44, E45 not set.
2. Coolant temp between 80°C and 110°C.
3. Closed loop operation for 9 minutes, oxygen sensor ready.
4. Engine speed 400 RPM or greater.
5. Vehicle speed 0 MPH.

FAILURE CONDITIONS:

1. The ECM fails to detect an increase of 15 or more integrator counts, when AIR system diverts to the exhaust manifold.
2. System has failed test 4 times.

ACTION TAKEN:

1. ECM illuminates "SERVICE ENGINE SOON" telltale for entire key cycle.
2. AIR system is placed in divert.

NOTE ON INTERMITTENTS:

A leaking injector may cause this code to set. Go to Chart A-3 No Start or Stall After Start. Chart A-3 No Start or Stall After Start