ECM Code EO49, Air System Fault: Action:

ECM turns on SERVICE ENGINE SOON light.

This chart monitors the air injection system to detect operating problems with the electric divert valve and electric switching valve. These tests use the oxygen sensor and ECM integrator to monitor valve function. Switching valve has a 2-wire connector located behind cruise control servo bracket. Divert valve also has a 2-wire connector located on top of air switching assembly.