Quick Test: Notes

The Quick Test is divided into three specialized tests:

1. Key On Engine Off (KOEO) On-Demand Self-Test
2. Key On Engine Running (KOER) On-Demand Self-Test
3. Continuous Memory Self-Test

The Quick Test checks the integrity and function of the electronic engine control (EEC) system and outputs the test results when requested by a diagnostic tool. The Quick Test also provides a quick end check of the powertrain control system, and is usually carried out at the start of each diagnostic procedure with all accessories off. The Quick Test is also carried out at the end of most pinpoint tests for verification of the repair and to make sure no other faults are incurred while repairing a previous fault. A system pass will be displayed when no diagnostic trouble codes (DTCs) are output and a diagnostic tool communication error does not exist. System pass means that hardware monitored by the powertrain control module (PCM) is functioning within the normal operating limits. Only a system pass, a DTC, or an incomplete on-board diagnostic (OBD) drive cycle (P1000) will be displayed.

For applications that use a stand-alone transmission control module (TCM) the PCM will not output TCM DTCs. For TCM self-test and diagnostics, refer to AUTOMATIC TRANSMISSION .