Quick Test: Notes

The QUICK TEST  diagnostic procedure is a functional test of the EEC-IV system, consisting of basic test steps. These basic steps must be carefully followed in sequence, otherwise a misdiagnosis, or replacement of non-faulty components may result.

• VISUAL CHECK AND PREPARATION is checking for obvious faults and defects and preparing vehicle for testing.
• EQUIPMENT HOOK-UP  ensures the proper equipment is used and is properly operating prior to testing.
• KEY ON/ENGINE OFF SELF-TEST  is a static check of EEC-IV system inputs and outputs.
• TIMING CHECK  verifies the ability of the system to compute and maintain a fixed spark timing during SELF-TEST.
• ENGINE RUNNING SELF-TEST  is a dynamic system check with the engine under actual operating conditions and at normal operating temperature.
• CONTINUOUS SELF-TEST  checks the sensor inputs for opens and shorts while the vehicle is in operation.
• KEY ON/ENGINE OFF  and ENGINE RUNNING SELF-TEST  are intended to detect faults present at the time of testing, not intermittent faults. Intermittent faults are detected by CONTINUOUS SELF-TEST  .