Notes

PURPOSE
Quick Test checks integrity and function of the EEC-V powertrain control system and outputs test results upon demand.

DESCRIPTION
Quick Test provides a quick end check of the powertrain control system and is performed at the start of each diagnostic procedure and performed at the end of most pinpoint tests for verification of repair and to make sure no other faults were incurred while servicing a previous fault.

Quick Test is divided into three specialized tests:

- Key On Engine Off (KOEO) Self-Test

- Key On Engine Running (KOER) Self-Test

- Continuous Memory DTC Access.

A system pass occurs when Quick Test is performed and no DTCs are output and a scan tool communication problem does not exist. System pass means that inputs and outputs that are monitored by the PCM are functioning within normal operating limits. When retrieving Continuous Memory DTCs that emission related (light the Malfunction Indicator Lamp (MIL)) and DTCs are not output, then only the emission system has passed. It is possible that a fault still exists in other PCM inputs and outputs.

NOTE: Retrieving Continuous Memory DTCs must be performed separately from KOEO Quick Test.

OPERATION
Quick Test is performed by retrieving KOEO, KOER, and Continuous Memory Diagnostic Trouble Codes. Under certain fault conditions, the vehicle may not be able to complete or initiate a part or all of Quick Test. The technician should refer to the guided path for that symptom. If any problems occur during Quick Test, the appropriate action or direction is provided. For vehicles with no symptoms, refer to the "No Symptoms Present - EEC-V Quick Test" flow chart. When a pinpoint test directs the technician to perform Quick Test, refer to Diagnostic Subroutines Step 1.0.

Special Notes
Before running Quick Test, always perform the necessary visual checks and safety precautions listed below.