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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 139 (Engine Controls - System & Component Testing - 7.3L Diesel) >> Engine Performance Diagnostic Procedures >> Test 9: Perform KOER On-Demand Self-Test >> Purpose

Test 9: Perform KOER On-Demand Self-Test: Purpose

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This test is performed to determine if PCM has detected any fault conditions that would cause a performance problem while engine is running. PCM will perform step tests on injection control pressure system and exhaust back pressure system. Step tests are PCM-controlled tests where PCM commands a specific exhaust back pressure or injection control pressure and then measures result. If a predetermined threshold is not reached, a DTC will be generated. This test can be performed at any engine temperature.

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