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DTC Test Descriptions
The self-diagnostic tests run to determine if a subsystem has passed or failed a specified test. After a test is performed, the ECM will record test PASS/FAIL criteria for display with a Scan tool. Each DTC will have three records and are as follows:^ LAST TEST-Indicates whether the diagnostic reported a test passed or failed the last time it ran.
Possible Display: PASSED, FAILED, NOT RAN
^ THIS IGNITION-Indicates if the diagnostic test has run this ignition cycle and the results of that test(s).
Possible Display: PASSED, FAILED, PASS & FAIL, NOT RAN
^ SINCE CLEAR-Indicates if diagnostic test has run since DTCs were cleared and the results of that test(s).
Possible Display: PASSED, FAILED, PASS & FAIL, NOT RAN, HISTORY