KOER On-Demand Self-Test: Description

KOER on-demand self-test is a functional test of PCM performed with ignition key on, engine running. A check of certain inputs and outputs is made during operating conditions and normal operating temperature. The Brake Pedal Position (BPP) switch, Transmission Control Switch (TCS) and Power Steering Pressure (PSP) switch tests are part of KOER on-demand self-test and must be performed during this operation (if applicable). See BPP, PSP & TCS TEST PROCEDURES . A fault must be present at time of testing for KOER on-demand self-test to detect a fault.